Fluid generating device

Abstract

The utility model provides a fluid generating device which comprises the following components: a body which is provided with a channel which is arranged along the axial direction in a penetrating manner and a hollow cavity which surrounds the channel, and comprises a first cold fluid channel and a mixed fluid channel which are successively arranged along the flowing direction of fluid in the channel, and a mixing port is formed between the first cold fluid channel and the mixed fluid channel; the hot fluid passage is provided with a communicating opening communicating with the hollow cavity, and the axial distance between the mixing opening and a mixed fluid outlet of the mixed fluid passage is not smaller than the axial distance between the mixing opening and the communicating opening; the fluid driving assembly is used for driving the fluid in the thermal fluid passage to flow to the body; the heating assembly is used for heating the fluid flowing from the hot fluid passage to the mixing port; the mixing port is arranged close to the communicating port as much as possible, so that fluid in the hot fluid passage flows into the mixed fluid passage through the mixing port, and the mixed fluid passage can be relatively prolonged.

Description

Technical Field

[0001] This utility model relates to the field of hair dryers, and more particularly to a fluid generating device. Background Technology

[0002] Hair dryers, as common fluid generating devices, are widely used in daily life and industrial production. Hair dryers that generate hot fluid, in particular, have a variety of applications, such as drying hair and even styling hair in wet or dry environments.

[0003] Based on the principles of fluid mechanics, some existing hair dryers use a motor and fan to drive the main fluid through a heating element to form hot air. Under the suction effect of the hot air, a certain amount of cold air is drawn in from the outside. The hot and cold air mix at the hair dryer's fluid outlet to form a hot fluid within a preset temperature range. On the one hand, because the hot and cold air are ejected parallel to each other before mixing, various fluid turbulence phenomena easily occur at the hair dryer's fluid outlet, affecting the user experience. On the other hand, this type of hair dryer generally requires an additional nozzle or a longer mixing section at the fluid outlet, resulting in a longer overall flow channel, necessitating a higher-power motor, and leading to a larger hair dryer body. Utility Model Content

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

[0005] To achieve the above-mentioned objectives, this utility model adopts the following technical solution: a fluid generating device, comprising:

[0006] The body has a passage extending through it along its axial direction and a hollow cavity surrounding the passage. The passage includes a first cold fluid passage for conveying cold fluid and a mixing fluid passage for mixing fluid. A mixing port is formed between the first cold fluid passage and the mixing fluid passage, and the mixing port connects the hollow cavity and the passage.

[0007] A hot fluid passage connected to the body, the hot fluid passage extending at least partially intersecting the body in the direction of extension, the hot fluid passage having a communication port communicating with the hollow cavity, and the axial distance between the mixing port and the mixing fluid outlet of the mixing fluid passage not less than the axial distance between the mixing port and the communication port.

[0008] A fluid drive assembly for driving the fluid in the thermal fluid passage toward the body;

[0009] A heating assembly for heating the fluid flowing from the hot fluid passage to the mixing port.

[0010] In the fluid generating device of this invention, a mixing port for the flow of hot fluid is provided between the first fluid inlet and the first fluid outlet of the passage. The mixing port is positioned such that its distance from the mixed fluid outlet is not less than its distance from the connecting port. This arrangement, placing the mixing port as close as possible to the connecting port, facilitates the flow of fluid from the hot fluid passage into the mixed fluid passage through the mixing port. It also relatively extends the mixed fluid passage, allowing for more sufficient contact and flow time between the cold and hot fluids, thereby improving the uniformity of the mixture, reducing temperature gradients, and preventing localized overcooling or overheating.

[0011] Meanwhile, the fluid generating device in this invention, due to the overall flow channel arrangement, ensures that the outer wall of the main body does not directly contact the heated fluid, especially the outer wall of the main body near the fluid outlet end. On the one hand, this prevents the user from feeling overheating even when holding the main body, and significantly reduces the possibility of burns or overheating even without any anti-scalding design near the outer wall of the main body. On the other hand, it prevents the fluid outlet end from overheating, and even if other accessories are added at the fluid outlet end, it will not cause other accessories to overheat, greatly reducing the possibility of burns or overheating and improving safety performance.

[0012] As a further improvement of this utility model, the first cold fluid passage has the same cross-sectional area as the mixed fluid passage.

[0013] This ensures that the fluid in the passage is not subjected to additional resistance, thereby making the fluid flow in the passage smoother.

[0014] As a further improvement of this utility model, the first cold fluid outlet of the first cold fluid passage and the mixing fluid inlet of the mixing fluid passage are spaced apart along the axial direction to form the mixing port.

[0015] In the fluid generating device of this invention, the mixing port is directly set on the path of the passage, eliminating the need for additional nozzles or a mixing section near the fluid outlet. This reduces unnecessary flow resistance, avoids backflow and eddy current problems in traditional nozzle-type mixing structures, simplifies the structure of the fluid outlet, shortens the fluid flow path within the device, reduces energy loss during flow, and increases the kinetic energy output of the fluid, allowing it to flow out more smoothly from the outlet. Simultaneously, the flow direction of other fluids entering the passage from the mixing port intersects / is not parallel to the flow direction of the fluids in the passage, and these other fluids are located on the flow path of the fluids in the passage. This is more conducive to the mixing and rectification of multiple fluids, resulting in a more uniform outlet temperature and preventing turbulence at the fluid outlet that could negatively impact the user experience.

[0016] As a further improvement of this utility model, the hollow cavity is provided with a connecting passage connecting the mixing port and the connecting port. This makes the fluid flowing out of the hot fluid passage more concentrated, preventing the fluid flowing out of the connecting port from filling the entire hollow cavity and affecting the flow of fluid from the mixing port into the passage.

[0017] As a further improvement of this utility model, the connecting passage is arranged around the passage.

[0018] As a further improvement of the present invention, at least a portion of the heating components are disposed within the connecting passage;

[0019] Alternatively, at least one of the heating components is disposed within the communication passage and is located on the radial sides of the communication port.

[0020] Because the heating element is located on the side opposite the connection port, the fluid flows around the passage under the drive of the fluid driving component, forming a circulating flow. This flow pattern allows the fluid to pass evenly through the heating element, avoiding localized overheating or uneven heating, thus achieving uniform heating of the fluid throughout the hollow cavity. Furthermore, because the fluid continuously contacts the heating element during flow, the heat transfer efficiency is improved, thereby increasing the overall thermal efficiency of the system.

[0021] As a further improvement of this utility model, the connecting passage extends obliquely from the connecting port toward the mixing fluid passage, so as to guide the fluid entering the connecting passage from the hot fluid passage toward the mixing fluid passage.

[0022] In this embodiment, the connecting passage serves both as a connecting passage between the mixing port and the connecting port, and as a guiding passage for the fluid in the hot fluid passage to flow from the mixing port toward the mixing fluid passage. Before entering the mixing port, the flow direction of the fluid from the connecting port of the hot fluid passage intersects with the flow direction of the fluid in the passage / passage, without a parallel phase. That is, before entering the mixing port, the flow direction of the hot fluid in the hot fluid passage intersects with the flow direction of the fluid in the passage / passage, without a parallel phase. This shortens the flow path of the fluid in the hot fluid passage between the connecting port and the mixing port, and also relatively lengthens the mixing fluid passage, allowing for more sufficient contact and flow time between the cold and hot fluids within the mixing fluid passage. This improves the uniformity of the mixture, reduces the temperature gradient, and avoids localized overcooling or overheating. Simultaneously, this design ensures that the outer wall of the body, at least near the handle, does not directly contact the heated fluid. Even without any anti-scalding design near this outer wall, the possibility of burns or overheating is significantly reduced.

[0023] As a further improvement of this utility model, at least a portion of the heating component is located within the connecting passage. The heating component located within the connecting passage extends obliquely toward the mixing fluid passage to guide the fluid entering the connecting passage from the hot fluid passage toward the mixing fluid passage. The heating section extending obliquely toward the direction of the mixing fluid passage can define the flow direction of the fluid located within the hollow cavity / connecting passage. When the fluid in the hot fluid passage flows through the heating section extending obliquely toward the direction of the mixing fluid passage, the fluid is heated to form a hot fluid while simultaneously being guided and redirected. This ensures that the hot fluid entering the passage from the mixing port flows uniformly into the mixing fluid passage, preventing some fluid from flowing back into the first cold fluid passage and affecting the stability of the fluid generating device.

[0024] As a further improvement of this utility model, the first cold fluid outlet of the first cold fluid passage has a guide slope extending inclinedly toward the inside of the mixing fluid passage; and / or, the mixing fluid inlet of the mixing fluid passage has a guide slope extending inclinedly toward the outside of the first cold fluid passage. This ensures that the hot fluid entering the passage from the mixing port flows uniformly into the mixing fluid passage, preventing some fluid from flowing back into the first cold fluid passage and affecting the stability of the fluid generating device.

[0025] As a further improvement of this utility model, at least a portion of the heating component is disposed near the communication port and located within the hollow cavity; the downstream cross-sectional area of ​​the heating component within the hollow cavity is larger than the upstream cross-sectional area. Therefore, along the flow direction of the fluid, the heating area of ​​the heating section gradually increases, thereby further homogenizing the temperature of the fluid within the hollow cavity and achieving uniform heating.

[0026] As a further improvement of the present invention, the fluid generating device further includes a handle connected to the main body, and at least a portion of the hot fluid passage is formed in the handle.

[0027] As a further improvement of this utility model, the handle is perpendicular to the body.

[0028] As a further improvement to this invention, the fluid generating device further includes a second cold fluid passage, the air outlet section of which surrounds the mixing fluid passage. The fluid driving component is further configured to drive the fluid flow in the second cold fluid passage. This increases the air outlet area at the fluid outlet end of the main body, thereby increasing the air volume.

[0029] As a further improvement of the present invention, the fluid generating device further includes a main fluid passage, and the fluid driving component is disposed in the main fluid passage; the second cold fluid passage and the hot fluid passage are connected to the outlet of the main fluid passage.

[0030] As a further improvement to this invention, the fluid generating device further includes a partition plate disposed between the mixing port and the outlet of the main fluid passage, to prevent crosstalk between the hot fluid in the hot fluid passage and the cold fluid in the second cold fluid passage. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the fluid generating device in the first embodiment of the present invention;

[0032] Figure 2 yes Figure 1 A schematic diagram of the fluid generating device from another angle;

[0033] Figure 3 yes Figure 2 Sectional view along the middle AA direction;

[0034] Figure 4 This is a cross-sectional view of the fluid generating device along the cross-section of the body in a specific embodiment of the heating assembly of this utility model.

[0035] Figure 5This is a schematic diagram of the fluid generating device in the second embodiment of the present invention;

[0036] Figure 6 yes Figure 5 The fluid generating device in the middle Figure 2 The sectional view shown is along line AA. Detailed Implementation

[0037] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. Please refer to the accompanying drawings for further details. Figures 1 to 6 The figures shown represent preferred embodiments of the present invention. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent modifications or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0038] In this specification, it should be noted that, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, a connection can be a direct connection or an indirect connection through an intermediate medium; it can be a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, the terms "first," "second," "third," etc., in this specification are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise expressly and specifically limited.

[0039] Please refer to Figures 1 to 3 The image shows a fluid generating device 100 according to the first embodiment of this utility model. Below, taking a hair dryer as an example, the structure, function, and mechanism of the fluid generating device 100 will be specifically described. It is understood that this is not a limitation; the fluid generating device 100 can also be applied to other scenarios requiring the generation of cold / hot / high-speed fluids, such as adhesive removal and dust removal.

[0040] The fluid generating device 100 includes a body 1, which is generally a straight cylindrical shape with equal front and rear diameters, such as a cylindrical or elliptical cylinder. Of course, it is not limited to this. Depending on the specific design requirements, the body can also be designed as an irregular cylindrical shape with unequal front and rear diameters, which will not be elaborated here.

[0041] The body 1 defines a fluid outlet end 1a of the fluid generating device 100 at one end in the axial direction. The fluid generated by the fluid generating device 100 is ejected from the fluid outlet end 1a to achieve drying.

[0042] The main body 1 has a passage 11 extending axially through it. The 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. Fluid flowing into the passage 11 from the first fluid inlet 111 passes through the mixing port 113 and then exits from the first fluid outlet 112. That is, in this embodiment, the first fluid outlet 112 is located at the fluid outlet end 1a of the fluid generating device 100.

[0043] That is, along the fluid flow direction within passage 11, passage 11 sequentially includes a first cold fluid passage 11a for conveying cold fluid and a mixing fluid passage 11b for mixing fluid, with a mixing port 113 formed between the first cold fluid passage 11a and the mixing fluid passage 11b. Specifically, the first cold fluid passage 11a is located upstream of the mixing port 113, and the mixing fluid passage 11b is located downstream of the mixing port 113. The aforementioned first fluid outlet 112 refers to the mixing fluid outlet of the mixing fluid passage 11b.

[0044] After entering the mixing fluid passage 11b, the cold fluid in the first cold fluid passage 11a mixes with other fluids flowing into the mixing fluid passage 11b through the mixing port 113 to form a mixed fluid, which is then ejected from the fluid outlet end 1a.

[0045] In some optional embodiments, the first cold fluid outlet 114 of the first cold fluid passage 11a and the mixing fluid inlet 115 of the mixing fluid passage 11b are spaced apart along the axial direction to form a mixing port 113. In the fluid generating device 100 of this utility model, the mixing port 113 is directly set on the path of the passage 11, without the need for additional nozzles or a mixing section near the fluid outlet 1a. This reduces unnecessary flow resistance, avoids backflow and eddy current problems in traditional nozzle-type mixing structures, simplifies the structure of the fluid outlet 1a of the fluid generating device 100, shortens the flow path of the fluid in the body 1, reduces energy loss during flow, and increases the kinetic energy output of the fluid, allowing the fluid to flow out more smoothly from the fluid outlet 1a. At the same time, the flow direction of other fluids entering the passage 11 from the mixing port 113 intersects / is not parallel to the flow direction of the fluid in the passage 11 at the mixing port 113, and the other fluids entering the passage 11 from the mixing port 113 are located on the flow path of the fluid in the passage 11, which is more conducive to the mixing and rectification of multiple fluids, resulting in a more uniform outlet temperature, and avoiding the disturbance of various fluids at the fluid outlet 1a, which would affect the user experience.

[0046] Specifically, the main body 1 has an inner cylinder 12 that defines a passage 11. One end of the inner cylinder 12 is a first fluid inlet 111, and the other end is a first fluid outlet 112. A mixing port 113 is disposed through the cylinder wall of the inner cylinder 12. The inner cylinder 12 located upstream of the mixing port 113 defines a first cold fluid passage 11a, and the inner cylinder 12 located downstream of the mixing port 113 defines a mixed fluid passage 11b.

[0047] In some optional embodiments, the mixing port 113 penetrates the inner cylinder 12 radially through the cylinder wall of the inner cylinder 12. In the fluid generating device 100 of this invention, a mixing port 113 is directly formed along the radially penetrating wall of the inner cylinder 12. This allows the mixing port 113 to be directly positioned on the path of the passage 11, eliminating the need for additional nozzles or a mixing section near the fluid outlet 1a. This reduces unnecessary flow resistance, avoids backflow and eddy currents in traditional nozzle-type mixing structures, simplifies the structure of the fluid outlet 1a of the fluid generating device 100, shortens the fluid flow path within the body 1, reduces energy loss during flow, and increases the kinetic energy output of the fluid, allowing it to flow more smoothly from the outlet 1a. Simultaneously, the flow direction of other fluids entering the passage 11 from the mixing port 113 intersects / is not parallel to the flow direction of the fluid in the passage 11. Furthermore, these other fluids are located on the flow path of the fluid in the passage 11, which is more conducive to mixing and rectifying multiple fluids, resulting in a more uniform outlet temperature and preventing turbulence at the fluid outlet 1a that could negatively impact the user experience.

[0048] In some optional 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 segmented, that is, the mixing port 113 is annular, and the mixing port 113 divides the inner cylinder 12 into two segments spaced apart along the axial direction. That is, the passage 11 is segmented at the mixing port 113, which can increase the area of ​​the mixing port 113, thereby making it easier for other fluids to enter the mixing fluid passage 11b from the mixing port 113. Of course, this is not a limitation. In other embodiments, the mixing port 113 can also be a plurality of through holes spaced apart circumferentially around the inner cylinder 12. In this case, the inner cylinder 12 extends continuously from the first fluid inlet 111 to the first fluid outlet 112.

[0049] In this embodiment, the cross-sectional shape of the inner cylinder 12 is circular. Of course, it is understood that the cross-sectional shape of the inner cylinder 12 can also be other regular or irregular shapes that are not circular.

[0050] In one 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 the size of the first fluid outlet 112. Compared with the prior art where the size of the first fluid outlet 112 is larger than the size of the first fluid inlet 111, in this utility model, by setting the size of the first fluid inlet 111 and the size of the first fluid outlet 112 to be the same, the flow resistance and turbulence are reduced, making the fluid flow path within the body 1 smoother. Furthermore, other fluids entering the passage 11 from the mixing port 113 are located on the flow path of the fluids in the passage 11, which is more conducive to the mixing and rectification of multiple fluids, resulting in a more uniform outlet air temperature. It also avoids the various fluids becoming turbulent at the fluid outlet 1a, thus preventing any impact on the user experience.

[0051] In some optional embodiments, the cross-sectional area of ​​passage 11 remains constant along the fluid flow direction. Correspondingly, the inner cylinder 12 is a straight cylinder with equal diameters front and back, and the cross-sectional areas of the first cold fluid passage 11a and the mixing fluid passage 11b are the same. This ensures that the fluid in passage 11 does not experience additional resistance, thereby making the fluid flow in passage 11 smoother. Of course, this is not a limitation.

[0052] The fluid generating device 100 further includes a hot fluid passage 2, a fluid driving component 3 for driving the fluid in the hot fluid passage 2 toward the body 1, a heating component 4 for heating the fluid flowing from the hot 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. The hot fluid passage 2 is connected to the passage 11 through the mixing port 113.

[0053] In the fluid generating device 100 of this embodiment, the fluid driving component 3 only needs to provide flow power to the fluid in the hot fluid passage 2, and does not need to provide flow power to the fluid in the passage 11. After the fluid in the hot fluid passage 2 flows to the mixing fluid passage 11b through the mixing port 113, a negative pressure is formed in the passage 11. Under the action of the negative pressure, outside air enters the passage 11 through the first fluid inlet 111 to form cold fluid, increasing the air volume of the fluid generating device 100. Since less fluid is driven by the fluid driving component 3, the volume of the fluid driving component 3 can be reduced, thereby making the structure of the fluid generating device 100 more compact and miniaturized, and also reducing weight, noise, etc., and improving the user experience. At the same time, only the fluid in the hot fluid passage 2 flows through the heating component 4. The fluid in the hot fluid passage 2 that flows to the mixing fluid passage 11b through the mixing port 113 is hot fluid. This hot fluid mixes with the cold fluid in the first cold fluid passage 11a through the mixing fluid passage 11b and then leaves the fluid generating device 100.

[0054] Specifically, the body 1 has a hollow cavity surrounding the passage 11. A hot fluid passage 2 is connected to the body 1, and the hot fluid passage 2 extends at least partially intersecting the axial direction of the body, that is, the hot fluid passage 2 is at least partially formed on other conduits / pipes that intersect with the body 1.

[0055] The hot fluid passage 2 is connected to the hollow cavity, and then to the mixing port 113. That is, the mixing port 113 connects the passage 11 to the hollow cavity, and the hot fluid passage is connected to the hollow cavity. Therefore, the hot fluid passage 2 and the passage 11 are connected through the hollow cavity and the mixing port 113.

[0056] Specifically, the body 1 also includes an outer cylinder 13 located on the outer periphery of the inner cylinder 12, with the corresponding ends of the inner cylinder 12 and the outer cylinder 13 connected to form an end face. A hollow cavity is thus formed between the inner cylinder 12 and the outer cylinder 13.

[0057] In one specific embodiment, the inner cylinder 12 and the outer cylinder 13 are of equal length, and their corresponding ends are flush with each other. Of course, this is not a limitation. Depending on the specific design requirements, at least one end of the outer cylinder 13 may also be configured to extend axially beyond the corresponding end of the inner cylinder 12, or at least one end of the inner cylinder 12 may also be configured to extend axially beyond the corresponding end of the outer cylinder 13.

[0058] The fluid generating device 100 also includes a handle 5 connected to the body 1, and at least a portion of the hot fluid passage 2 is formed in the handle 5.

[0059] In one specific embodiment, the fluid generating device 100 includes only one handle 5, which is perpendicular to the body 1. A hot fluid passage 2 is formed within the handle 5, and in this case, the hot fluid passage 2 is perpendicular to the passage 11. However, this is not a limitation. In other embodiments, when the handle 5 includes a parallel section parallel to the body 1, the hot fluid passage 2 can also be configured to have a parallel section parallel to the passage 11; alternatively, the fluid generating device 100 can also be configured to include two handles 5, with the hot fluid passage 2 flowing sequentially through both handles 5 before entering the mixing port 113. This specification does not impose excessive restrictions on the inlet of the hot fluid passage 2. The inlet of the hot fluid passage 2 only needs to be different from the first fluid inlet 111, and the specific location of the inlet of the hot fluid passage 2 can be set according to requirements.

[0060] In some optional embodiments, the fluid drive assembly 3 is disposed on the hot fluid passage 2 inside the handle 5, thereby further reducing the volume of the body 1.

[0061] In this embodiment, the fluid drive assembly 3 includes a fan and a motor for driving the fan to rotate. Of course, this is not a limitation; in other embodiments, the fluid drive assembly 3 may also be configured as an ion wind generating assembly, an air pump assembly, an electromagnetically driven fan assembly, a piezoelectrically driven fan assembly, etc.

[0062] In this invention, there are no excessive restrictions on the placement of the circuit board within the fluid generating device 100. The circuit board can be placed inside the handle 5 or inside the body 1. The placement of the circuit board only needs to ensure that it is not affected by the heating component 4 or the hot fluid heated by the heating component 4. For example, the circuit board can be placed upstream of the heating component 4 to prevent the hot fluid heated by the heating component 4 from flowing through the circuit board and causing it to overheat and be damaged.

[0063] The hot fluid passage 2 includes a connection port 21 that communicates with the hollow cavity. Specifically, the connection port 21 refers to the outlet of the hot fluid passage 2. In this embodiment, the connection port 21 refers to the connection between the handle 5 and the body 1 / outer cylinder 13.

[0064] In some optional embodiments, the axial distance d1 between the mixing port 113 and the first fluid outlet 112 / the mixing fluid outlet of the mixing fluid passage is not less than the axial distance d2 between the mixing port 113 and the connecting port 21. Positioning the mixing port 113 as close as possible to the connecting port 21 facilitates the flow of fluid from the hot fluid passage 2 into the mixing fluid passage 11b via the mixing port 113. This also relatively extends the mixing fluid passage 11b, allowing for more sufficient contact and flow time between the cold and hot fluids within the mixing fluid passage, thereby improving the uniformity of the mixture, reducing the temperature gradient, and preventing localized overcooling or overheating.

[0065] The aforementioned axial distance d1 refers to the distance between the mixing port 113 and the mixing fluid outlet of the first fluid outlet 112 / mixing fluid passage in the axial direction of the body 1; correspondingly, the aforementioned axial distance d2 refers to the distance between the mixing port 113 and the connecting port 21 in the axial direction of the body 1.

[0066] The fluid generating device of this invention, due to the overall flow channel arrangement, ensures that the outer wall of the main body 1 does not directly contact the heated fluid, especially the outer wall of the main body near the fluid outlet end 1a. On the one hand, this prevents the user from feeling overheating even when holding the main body, and significantly reduces the possibility of burns or overheating even without any anti-scalding design near the outer wall of the main body. On the other hand, it prevents the fluid outlet end 1a from overheating, and even if other accessories are added to the fluid outlet end 1a, it will not cause other accessories to overheat, greatly reducing the possibility of burns or overheating and improving safety performance.

[0067] In a preferred embodiment, the mixing port 113 is located in the middle or near the middle of the passage 11. This facilitates the flow of fluid from the hot fluid passage 2 into the mixing fluid passage 11b via the mixing port 113, and also relatively extends the mixing fluid passage 11b, allowing the cold and hot fluids more sufficient contact and flow time within the mixing fluid passage, thereby improving the uniformity of the mixture, reducing the temperature gradient, and avoiding localized overcooling or overheating. Of course, this is not a limitation.

[0068] In some optional embodiments, the hollow cavity is provided with a connecting passage 14 that connects the mixing port 113 and the connecting port 21. The fluid flowing out of the hot fluid passage 2 flows through the connecting passage 14 and then enters the passage 11 from the mixing port 113. This makes the fluid flowing out of the hot fluid passage 2 more concentrated, preventing the fluid flowing out of the connecting port 21 from filling the entire hollow cavity and affecting the flow of fluid from the mixing port 113 into the passage 11.

[0069] The fluid generating device of this invention, due to its overall flow channel design, ensures that the outer wall of the main body near the handle does not directly contact the heated fluid, significantly reducing the possibility of burns or overheating and improving safety. In one specific embodiment, the connecting passage 14 is arranged around the passage 11, that is, the connecting passage 14 is arranged around the mixing port 113.

[0070] Specifically, the hollow cavity is provided with two connecting walls 141 spaced apart along the axial direction. The two connecting walls 141 are located on opposite sides of the mixing port 113 and the connecting port 21, respectively. The two connecting walls 141, the inner cylinder 12 located between the two connecting walls 141, and the outer cylinder 13 together form a connecting passage 14.

[0071] In some optional embodiments, one connecting wall 141 is integrally formed with the inner cylinder 12 located upstream of the mixing port 113, and the other connecting wall 141 is integrally formed with the inner cylinder 12 located downstream of the mixing port 113. Thus, the corresponding inner cylinder 12 segment can be supported within the hollow cavity, i.e., supported on the inner wall surface of the outer cylinder 13, at least through the corresponding connecting wall 141. This improves the stability of the internal structure of the body 1.

[0072] The aforementioned inner cylinder sections can be supported in the hollow cavity at least by the corresponding connecting wall 141. That is, each passage 11 is supported in the hollow cavity at least by the connecting wall 141. Specifically, the first cold fluid passage 11a is supported in the hollow cavity by the corresponding connecting wall 141, and the mixed fluid passage 11b is supported in the hollow cavity by the corresponding connecting wall 141.

[0073] It is known that, in addition to being supported and connected by the connecting wall 141, the inner cylinder 12 can also be fixedly connected by the docking structure with the outer cylinder 13.

[0074] The connecting port 21 and the mixing port 113 are axially offset from each other in the body 1, and the connecting port 21 is located on the side of the mixing port 113 away from the first fluid outlet 112.

[0075] 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 hot fluid passage 2 toward the first fluid outlet 112. On the one hand, this ensures that the hot fluid entering the passage 11 from the mixing port 113 flows uniformly into the mixing fluid passage 11b, preventing some fluid from flowing back into the first cold fluid passage 11a and affecting the stability of the fluid generating device 100. On the other hand, it ensures that the flow direction of the hot fluid entering the passage 11 from the mixing port 113 has the same component vector as the flow direction of the fluid in the passage 11, allowing the fluid to enter the mixing fluid passage 11b more smoothly and mix efficiently. Since the fluid has been guided and stabilized before entering the passage 11, it avoids violent collisions or turbulence that occur after suddenly entering the passage 11, which can significantly reduce flow noise.

[0076] Combination Figure 3 As shown, in an optional embodiment of the fluid guiding structure, the connecting passage 14 extends obliquely from the connecting port 21 toward the direction of the mixing fluid passage 11b, forming a guiding passage. The guiding passage constitutes a fluid guiding structure. That is, in this embodiment, the connecting passage 14 serves both as a connecting passage 14 connecting the mixing port 113 and the connecting port 21, and as a guiding passage guiding the fluid in the hot fluid passage 2 to flow through the mixing port 113 toward the mixing fluid passage 11b, which simplifies the internal structure of the body 1.

[0077] It is understood that in the embodiment where the connecting passage 14 also serves as a guiding passage, the fluid flowing from the connecting port of the hot fluid passage 2 into the body 1 intersects with the flow direction of the fluid in passage 11 / passage 11 before entering the mixing port 113, without a parallel phase. That is, the flow direction of the hot fluid in the hot fluid passage 2 intersects with the flow direction of the fluid in passage 11 / passage 11 before entering the mixing port, without a parallel phase. This shortens the flow path of the fluid in the hot fluid passage 2 between the connecting port and the mixing port 113, and also relatively lengthens the mixing fluid passage 11b, allowing the cold fluid and hot fluid to have more sufficient contact and flow time in the mixing fluid passage 11b, thereby improving the uniformity after mixing, reducing the temperature gradient, and avoiding local overcooling or overheating. At the same time, this setting ensures that the outer wall of the body 1, at least near the handle 5, does not directly contact the heated fluid. Even without any anti-scalding design near the outer wall of the body 1, the possibility of scalding or overheating is greatly reduced.

[0078] Combination Figure 3As shown, in an optional embodiment of the fluid guiding structure, at least a portion of the heating section of the heating component 4 is located within the hollow cavity. In embodiments where a connecting passage 14 is provided within the hollow cavity, at least a portion of the heating section of the heating component 4 is located within the connecting passage 14; this positioning of the heating component 4 enhances user safety, as it makes it difficult for fingers, hair, or other sharp objects to enter the passage 11, thus preventing accidents. At least a portion of the heating component 4 located within the hollow cavity / connecting passage 14 extends obliquely towards the direction of the mixing fluid passage 11b, and this obliquely extending heating component 4 at least partially forms a fluid guiding structure. The obliquely extending heating component 4 towards the direction of the mixing fluid passage 11b can limit the flow direction of the fluid within the hollow cavity / connecting passage 14. When the fluid in the hot fluid passage 2 flows through the heating section that extends obliquely toward the mixing fluid passage 11b, the fluid is heated to form a hot fluid while the fluid is guided and diverted. This ensures that the hot fluid entering the passage 11 from the mixing port 113 flows into the mixing fluid passage 11b, preventing some fluid from flowing back into the first cold fluid passage 11a and affecting the stability of the fluid generating device 100.

[0079] In one specific embodiment, the heating component 4, located near the connection port 21, has a heating section that extends at an angle toward the mixing fluid passage 11b. Therefore, the fluid flowing out of the self-heating fluid passage 2 tends to flow toward the mixing fluid passage 11b. This effectively optimizes the fluid flow direction, allowing the fluid to enter the mixing channel more smoothly and mix efficiently. Since the fluid is guided and stabilized before entering the passage 11, it avoids violent impacts or turbulence that occur upon sudden entry into the passage 11, which significantly reduces flow noise.

[0080] Combination Figure 3 As shown, in an alternative embodiment of the fluid guiding structure, the fluid guiding structure includes a guiding ramp 15a extending obliquely from the first cold fluid outlet 114 toward the mixing fluid passage 11b. After the fluid in the hot fluid passage 2 flows through the mixing port 113, the guiding ramp 15a guides the fluid toward the mixing fluid passage 11b.

[0081] Combination Figure 3 As shown, in an optional embodiment of the fluid guiding structure, the fluid guiding structure includes a guiding ramp 15b extending obliquely outward from the mixing fluid inlet 115 toward the first cold fluid passage 11a. Before the fluid in the hot fluid passage 2 flows through the mixing port 113, the fluid is first guided by the guiding ramp 15b, thereby causing the fluid after the mixing port 113 to flow toward the mixing fluid passage 11b. It can be understood that the guiding ramp 15b in this embodiment can be considered as part of the guiding passage.

[0082] In some optional embodiments, at least a portion of the heating element 4 is disposed within the hollow cavity. In embodiments where the hollow cavity includes a connecting passage 14, the aforementioned "at least a portion of the heating element 4 is disposed within the hollow cavity" means that at least a portion of the heating element 4 is disposed within the connecting passage 14. This allows for better uniform temperature distribution of the fluid within the connecting passage 14, thus achieving uniform heating.

[0083] In some preferred embodiments, at least a portion of the heating components 4 are disposed on the side of the hollow cavity opposite to the hot fluid passage 2, that is, at least a portion of the heating components 4 and the connecting port 21 are located on opposite sides of the passage 11 in the radial direction. Fluid flowing from the connecting port 21 into the hollow cavity, under the driving force of the fluid driving component 3, will flow around the passage 11 toward the side opposite to the connecting port 21. Thus, by disposing of the heating components 4 on the side of the hollow cavity opposite to the hot fluid passage 2, and because the heating components 4 are located on the side opposite to the connecting port 21, the fluid, driven by the fluid driving component 3, will flow around the passage 11, forming a circulating flow. This flow pattern allows the fluid to pass uniformly through the heating components 4, avoiding local overheating or uneven heating, thereby achieving uniform heating of the fluid throughout the hollow cavity. Furthermore, because the fluid continuously contacts the heating components 4 during the flow process, the heat transfer efficiency is improved, thereby increasing the overall thermal efficiency of the system.

[0084] In embodiments where the hollow cavity includes a connecting passage 14, the aforementioned at least part of the heating component 4 is disposed on the side of the hollow cavity opposite to the hot fluid passage 2, meaning that at least part of the heating component 4 is disposed on the side of the connecting passage 14 opposite to the hot fluid passage 2.

[0085] In some optional embodiments, multiple heating components 4 are spaced apart within the hollow cavity around the passage 11. In embodiments where the hollow cavity includes a connecting passage 14, the multiple heating components 4 are spaced apart within the connecting passage 14 around the passage 11. This further homogenizes the temperature of the fluid within the connecting passage 14. Uniform heating and an optimized flow path make the system more stable during operation, reducing the risk of system failure due to temperature fluctuations or uneven flow, and improving the reliability and stability of the system.

[0086] Combination Figure 3 As shown, in this embodiment, the heating component 4 includes a first heating component 41 disposed at the communication port 21 and a second heating component 42 disposed on the side of the communication passage 14 opposite to the hot fluid passage 2.

[0087] Of course, this is not the only possibility; in other implementations, such as... Figure 4In one specific embodiment shown, the heating component 4 may also include three, four or more heating components 4 evenly distributed around the passage 11 within the connecting passage 14. In this case, one heating component 4 may be located at the connecting port 21, and the fluid flowing out of the connecting port 21 will be heated to form a hot fluid, so that the fluid flowing into the mixing fluid passage 11b through the mixing port 113 is all hot fluid. Of course, multiple heating components may also be staggered from the connecting port 21; or, the heating component 4 may not be provided in the hollow cavity, and the heating component 4 may only be provided on the hot fluid passage 2 inside the handle 5.

[0088] In some optional embodiments, at least a portion of the heating component 4 is located in the hollow cavity near the communication port 21. In this case, the heating component 4 may be disposed only in the hollow cavity, or it may be disposed in the handle 5 with a portion of the heating section protruding into the hollow cavity.

[0089] For a cross-section perpendicular to the flow direction of the fluid flowing through the heating component 4, the heating section located within the hollow cavity has at least two heating sections with different cross-sectional areas. That is, the heating component located at the connecting port 21 and within the hollow cavity has different heating areas along the flow direction of the fluid, thereby allowing the shape of the heating component to be adjusted according to specific needs to achieve different heating effects.

[0090] Combination Figure 4 As shown, in one specific embodiment, the downstream cross-sectional area of ​​the heating section located at the communication port 21 and within the hollow cavity of the heating assembly 4 is larger than the upstream cross-sectional area. This heating section is either a conical heating section or a trumpet-shaped heating section. Therefore, along the flow direction of the fluid, the heating area of ​​this heating section gradually increases, thereby further homogenizing the temperature of the fluid within the hollow cavity and achieving uniform heating. Of course, this is not a limitation; in other embodiments, the heating section located at the communication port 21 and within the hollow cavity can also be configured such that its cross-sectional area in the middle section along the fluid flow direction is larger than both the upstream and downstream cross-sectional areas. In this case, the heating section has a shape similar to a jar.

[0091] Specifically, the heating component 4 can be, but is not limited to, multi-layer sheet heaters, resistance wire heaters, irregularly shaped heaters, etc. It can be adaptively selected according to the specific setup scenario.

[0092] In a preferred embodiment, the fluid generating device 100 further includes a heat insulation component 6, with the heating component 4 disposed within the heat insulation component 6 to insulate the heat of the heating component 4 and prevent the position on the handle 5 / body 1 where the heating component 4 is located from overheating, thus affecting the user's experience.

[0093] Specifically, the heat insulation component 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 component 4 can be fixed to the heat insulation component 6. Alternatively, the heat insulation component 6 can also be configured to wrap around the heating component 4. By fixing the heat insulation component 6 to the handle 5 and / or the hollow cavity, the heating component 4 is simultaneously fixed at the corresponding position.

[0094] In some optional embodiments, the fluid generating device 100 further includes a temperature sensor disposed at the fluid outlet end 1a of the main body 1. The temperature sensor is communicatively connected to the circuit board so as to control the heating power of the heating component 4, etc., according to the temperature sensed by the temperature sensor, so that the temperature at the fluid outlet end 1a is within a preset temperature range.

[0095] In some optional embodiments, the fluid generating device 100 further includes a flow rate sensor disposed at the fluid outlet end 1a of the main body 1, and the flow rate sensor is communicatively connected to the circuit board. This allows for real-time acquisition of the flow rate at the fluid outlet end 1a, enabling control of the operating power / rotation speed of the fluid drive component 3 based on the flow rate. However, this is not a limitation; in other embodiments, the flow rate sensor may be disposed only at the communication port 21.

[0096] In some optional 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 are accessories at the fluid outlet end 1a, and can even identify the type of accessories. The identification sensor is communicatively connected to a circuit board. Thus, the operating mode of the fluid generating device 100 can be automatically controlled according to the type of accessories.

[0097] The aforementioned accessories include, but are not limited to: air collector nozzles, diffuser nozzles, styling nozzles, negative ion generators, essential oil diffusers, etc.

[0098] In some optional embodiments, the fluid generating device 100 further includes a TOF sensor disposed at the fluid outlet end 1a of the main body 1, and the TOF sensor is communicatively connected to the circuit board. Thus, during user operation, 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 damage to the hair, saving energy, and improving the user experience.

[0099] In some optional embodiments, the fluid generating device 100 also includes an NFC module located on the body 1 and / or the handle 5, so that users can quickly pair their mobile phones with the hair dryer and make personalized settings, such as wind speed and temperature, through the NFC module, making operation simple.

[0100] In some optional embodiments, the fluid generating device 100 further includes a purification module disposed in the body 1 and / or handle 5, which can filter dust and pollutants in the air to ensure that the blown fluid is cleaner, thereby reducing the damage of pollutants to the hair and making it suitable for sensitive scalps.

[0101] In some optional embodiments, the fluid generating device 100 further includes a thermal imaging module, which is communicatively connected to the circuit board. Thermal imaging technology enables real-time monitoring of hair and scalp temperature, preventing overheating damage and protecting hair health.

[0102] In some optional embodiments, the fluid generating device 100 further includes a scalp health detection module, which is electrically connected to the circuit board. The scalp health detection module can also be configured to communicate with a client (such as a mobile phone or tablet). The scalp health detection module can detect scalp conditions, such as humidity and temperature, provide hair care suggestions, and send them to the client for user reference.

[0103] In some optional embodiments, the fluid generating device 100 further includes an indicator light module disposed on the body 1 and / or the handle 5, the indicator light module being communicatively connected to the circuit board. The indicator light module emits different colors to indicate the operating mode of the fluid generating device 100, such as temperature, wind speed, etc., and can also enhance the aesthetic appearance of the fluid generating device 100.

[0104] 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 configured as a concealed nozzle to achieve a certain fluid guiding function; the nozzle can also be configured as a telescopic nozzle to achieve adjustment of fluid flow direction, flow rate, etc. The user can select the telescopic length, telescopic direction, etc. of the telescopic nozzle according to specific needs.

[0105] Combination Figures 5-6 The image shows a fluid generating device 100a according to the second embodiment of this utility model. The difference between the fluid generating device 100a in the second embodiment and the fluid generating device 100 in the first embodiment is that the fluid generating device 100a further includes a second cold fluid passage 8. The air outlet section of the second cold fluid passage 8 surrounds the mixing fluid passage 11b, and the fluid driving component 3 is further configured to drive the fluid flow in the second cold fluid passage 8. That is, part of the fluid driven by the fluid driving component 3 is mixed with the cold fluid in the passage 11 through the hot fluid passage 2 via the mixing port 113 and then ejected from the first fluid outlet 112, while the other part is ejected directly through the second cold fluid passage 8 without mixing. This increases the air outlet area of ​​the fluid outlet end 1a of the body 1, thereby increasing the air volume.

[0106] Specifically, the body 1 has a third fluid outlet 16 located on the same side as the first fluid outlet 112, and the third fluid outlet 16 surrounds the first fluid outlet 112. The second cold fluid passage 8 is connected to the third fluid outlet 16. Fluid flowing through the second cold fluid passage 8 flows out from the third fluid outlet 16.

[0107] Specifically, the fluid generating device 100a also includes a main fluid passage 9, with the fluid driving component 3 disposed within the main fluid passage 9. Both the hot fluid passage 2 and the second cold fluid passage 8 are connected to the outlet of the main fluid passage 9; that is, the hot fluid passage 2 and the second cold fluid passage 8 are two branch passages of the main fluid passage 9. The fluid in the main fluid passage 9 driven by the fluid driving component 3 splits into two paths at its outlet: one path enters the hot fluid passage 2, and the other path enters the second cold fluid passage 8.

[0108] In one specific embodiment, the fluid generating device 100a further includes a partition plate 7 disposed between the mixing port 113 and the outlet of the main fluid passage 9. The partition plate 7 is disposed between the mixing port 113 and the third fluid outlet 16 to prevent the hot fluid in the hot fluid passage 2 from interfering with the cold fluid in the second cold fluid passage 8.

[0109] In an embodiment where the heating component 4 is at least partially disposed within the handle 5, the partition plate 7 extends at least to the heating component 4. In this case, the position within the handle 5 corresponding to the heating component 4 is the outlet of the main fluid passage 9, so as to avoid the heating component 4 within the handle 5 affecting the fluid temperature within the second cold fluid passage 8.

[0110] 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. The opening and closing device may be configured to be manual or electric.

[0111] In one 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 can be controlled by controlling the rotation angle; or, the opening and closing device can also be a folding damper, so that the opening and closing of the third fluid outlet 16 can be controlled by the number of unfolded dampers.

[0112] The opening and closing of the aforementioned third fluid outlet 16 includes, but is not limited to, the following states: fully open, fully closed, partially open and partially closed.

[0113] In embodiments where the fluid generating device 100 also 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 configured as an electrically controlled partition plate 7, such as a telescopic partition plate. Thus, the partition plate 7 can be used selectively. For example, when the third fluid outlet 16 is fully open or partially open, the partition plate 7 is controlled to be in a fully extended state, separating the main fluid passage 9 and the hollow cavity; when the third fluid outlet 16 is fully closed, the partition plate 7 is controlled to be in a retracted state, not separating the hollow cavity and the main fluid passage 9, at which point the main fluid passage 9 becomes the hot fluid passage 2.

[0114] In some optional embodiments, the fluid generating device 100 further includes a secondary mixing mechanism located near the fluid outlet end 1a of the body 1.

[0115] In some optional embodiments, the secondary air mixing mechanism is integrally formed with the main body 1. The secondary air mixing mechanism is located at the first fluid outlet 112 and the third fluid outlet 16. In this case, the fluid outlet end 1a of the main body 1 refers to the outlet end of the secondary air mixing mechanism. The passage 11 and the secondary air mixing mechanism together allow the main body 1 to pass through axially. In other optional embodiments, the secondary air mixing mechanism can also be a mixing accessory detachably connected to the fluid outlet end 1a of the main body 1.

[0116] The second embodiment of this utility model is identical to the first embodiment except for the differences mentioned above, and will not be repeated here.

[0117] Compared with the prior art, in the fluid generating devices 100 and 100a of this utility model, a mixing port 113 for flow in the hot fluid passage 2 is provided between the first fluid inlet 111 and the first fluid outlet 112 of the passage 11. The mixing port 113 is positioned such that its distance d1 from the mixed fluid outlet is not less than its distance d2 from the connecting port 21. Therefore, by placing the mixing port 113 as close as possible to the connecting port 21, the fluid in the hot fluid passage 2 can flow into the mixed fluid passage 11b through the mixing port 113. This also relatively extends the mixed fluid passage 11b, allowing for more sufficient contact and flow time between the cold and hot fluids within the mixed fluid passage, thereby improving the uniformity of the mixture, reducing the temperature gradient, and avoiding localized overcooling or overheating.

[0118] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. 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.

[0119] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A fluid generating device, characterized in that, include: The body has a passage extending through it along its axial direction and a hollow cavity surrounding the passage. The passage includes a first cold fluid passage for conveying cold fluid and a mixing fluid passage for mixing fluid. A mixing port is formed between the first cold fluid passage and the mixing fluid passage, and the mixing port connects the hollow cavity and the passage. A hot fluid passage connected to the body, the hot fluid passage extending at least partially intersecting the axial direction of the body, the hot fluid passage having a communication port communicating with the hollow cavity, and the axial distance between the mixing port and the mixing fluid outlet of the mixing fluid passage not less than the axial distance between the mixing port and the communication port. A fluid drive assembly for driving the fluid in the thermal fluid passage toward the body; A heating assembly for heating the fluid flowing from the hot fluid passage to the mixing port.

2. The fluid generating device as described in claim 1, characterized in that, The first cold fluid passage has the same cross-sectional area as the mixed fluid passage.

3. The fluid generating device as described in claim 1, characterized in that, The first cold fluid outlet of the first cold fluid passage and the mixing fluid inlet of the mixing fluid passage are spaced apart along the axial direction to form the mixing port.

4. The fluid generating device as described in claim 1, characterized in that, The hollow cavity is provided with a connecting passage connecting the mixing port and the connecting port.

5. The fluid generating apparatus as described in claim 4, characterized in that, The connecting path is arranged around the path.

6. The fluid generating apparatus as claimed in claim 4, characterized in that, At least a portion of the heating components are disposed within the communicating passage; Alternatively, at least one of the heating components is disposed within the communication passage and is located on the radial sides of the communication port.

7. The fluid generating apparatus as claimed in claim 4, characterized in that, The connecting passage extends obliquely from the connecting port toward the mixing fluid passage.

8. The fluid generating apparatus as claimed in claim 4, characterized in that, At least a portion of the heating component is located within the communicating passage, and the portion of the heating component located within the communicating passage extends obliquely toward the mixing fluid passage.

9. The fluid generating apparatus as claimed in claim 1, characterized in that, The first cold fluid outlet of the first cold fluid passage has a guide slope extending inclined toward the inside of the mixing fluid passage; and / or, the mixing fluid inlet of the mixing fluid passage has a guide slope extending inclined toward the outside of the first cold fluid passage.

10. The fluid generating apparatus as claimed in claim 1, characterized in that, At least a portion of the heating component is disposed near the communication port and is located within the hollow cavity; the downstream cross-sectional area of ​​the heating component located within the hollow cavity is greater than the upstream cross-sectional area.

11. The fluid generating apparatus as claimed in claim 1, characterized in that, The fluid generating device further includes a handle connected to the body, and at least a portion of the hot fluid passage is formed within the handle.

12. The fluid generating apparatus as claimed in claim 11, characterized in that, The handle is perpendicular to the body.

13. The fluid generating apparatus as claimed in claim 1, characterized in that, The fluid generating device further includes a second cold fluid passage, the air outlet section of which surrounds the mixing fluid passage, and the fluid driving component is further configured to drive fluid flow in the second cold fluid passage.

14. The fluid generating apparatus as claimed in claim 13, characterized in that, The fluid generating device further includes a main fluid passage, and the fluid driving component is disposed within the main fluid passage; the second cold fluid passage and the hot fluid passage are connected to the outlet of the main fluid passage.

15. The fluid generating apparatus as claimed in claim 14, characterized in that, The fluid generating device further includes a partition plate disposed between the mixing port and the outlet of the total fluid passage.

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