Fluid generating device

Abstract

The utility model provides a fluid generating device which comprises a body provided with a first fluid inlet, a fluid outlet end and a mixed fluid channel adjacent to the fluid outlet end. A first fluid passage is formed between the first fluid inlet and an inlet of the mixed fluid passage; the handle is provided with a second fluid inlet, and a second fluid passage is formed between the second fluid inlet and the inlet of the mixed fluid passage; the fluid driving assembly is used for sucking fluid through the first fluid inlet and / or the second fluid inlet; the heating assembly is used for heating the fluid flowing through the mixed fluid passage; more fluid passes through the heater to form more hot fluid, so that the constant temperature control of the fluid outlet end is facilitated; meanwhile, the cross sectional area of a hot fluid channel does not need to be increased, the size of the fluid generating device is reduced, and the fluid generating device conforms to the miniaturization trend of an existing fluid generating device.

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 Bernoulli effect, some existing hair dryers use a motor and fan to drive fluid through a heating element to form a hot fluid. Under the entrainment effect of the hot fluid, a certain amount of cold fluid is drawn in from the outside. The hot and cold fluids mix at the hair dryer's outlet to form the outgoing fluid within a preset temperature range. In other words, in existing hair dryers, generally only one stream of fluid passes through the motor to form the hot fluid. On the one hand, this requires a larger motor and even a larger fluid flow cross-section for hair dryers that require more hot fluid, resulting in a larger overall size and excessive noise. On the other hand, too much cold fluid can significantly affect the temperature control of the hair dryer's outlet air, making it difficult to maintain a constant temperature. 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 first fluid inlet, a fluid outlet end, and a mixing fluid passage disposed adjacent to the fluid outlet end; a first fluid passage is formed between the first fluid inlet and the inlet of the mixing fluid passage;

[0007] The handle has a second fluid inlet, which forms a second fluid passage with the inlet of the mixing fluid passage;

[0008] A fluid drive assembly for drawing fluid through the first fluid inlet and / or the second fluid inlet;

[0009] A heating assembly for heating the fluid flowing through the mixed fluid passage.

[0010] In this invention, a second fluid passage and a first fluid passage connected to a mixing fluid passage are respectively provided in the handle and the main body, and a heating component is placed in the mixing fluid passage. After the two fluids merge in the mixing fluid passage, they are both heated by the heating component to form hot fluid. This allows more fluid to pass through the heater and form more hot fluid, which facilitates constant temperature control at the fluid outlet. At the same time, there is no need to increase the cross-sectional area of ​​the hot fluid passage, which helps to reduce the volume of the fluid generating device and conforms to the current trend of miniaturization of fluid generating devices.

[0011] As a further improvement of the present invention, the body has a fluid inlet end opposite to the fluid outlet end; the first fluid inlet is located at the fluid inlet end.

[0012] As a further improvement of the present invention, the fluid outlet end includes a first fluid outlet and a second fluid outlet, and the mixed fluid passage is connected to the first fluid outlet;

[0013] The body has a fluid inlet end opposite to the fluid outlet end and a third fluid passage connecting the fluid inlet end and the second fluid outlet.

[0014] When the fluid drive assembly directly drives the fluid to be discharged from the second fluid outlet, a negative pressure band is formed at the first fluid outlet; or, when the fluid drive assembly directly drives the fluid to be discharged from the first fluid outlet, a negative pressure band is formed at the second fluid outlet.

[0015] On the one hand, it can increase the air volume of the fluid generating device, and less fluid passes through the fluid driving component, which can reduce the volume of the fluid driving component, thereby making the structure of the fluid generating device more compact and miniaturized, and also reducing weight, noise, etc., and improving the user experience. On the other hand, although less fluid passes through the fluid driving component, due to the existence of the first fluid passage, under the direct or indirect drive of the fluid driving component, some external fluid mixes into the mixing fluid passage through the first fluid passage to form a hot fluid, so that more fluid passes through the heating component, reducing the impact of cold fluid on the constant temperature control of the fluid outlet. At the same time, there is no need to increase the volume of the fluid driving component, achieving the effect of both.

[0016] As a further improvement of this utility model, the first fluid inlet is a branch port located in the third fluid passage; part of the fluid entering the third fluid passage from the fluid inlet flows to the first fluid passage from the branch port, and the other part flows to the second fluid outlet. This simplifies the internal structure of the main body.

[0017] As a further improvement of this utility model, the diversion port is located between the handle and the fluid inlet end. Part of the fluid entering the third fluid passage from the fluid inlet end flows from the diversion port to the first fluid passage and forms a hot fluid through the mixing fluid passage, while the other part flows to the second fluid outlet to form a cold fluid.

[0018] As a further improvement of the present invention, the fluid drive assembly includes a main fluid drive assembly disposed on the handle and a secondary fluid drive assembly disposed at the first fluid inlet.

[0019] By adding the secondary fluid drive component, it is beneficial to draw cold fluid from the first fluid inlet, thereby allowing more fluid to flow through the mixed fluid passage, which in turn generates more hot fluid and further accelerates the flow of fluid within the fluid generating device, improving the drying performance of the fluid generating device.

[0020] As a further improvement of this utility model, the diversion port is located between the handle and the fluid outlet end.

[0021] As a further improvement of the present invention, the third fluid passage includes an upstream section located upstream of the diversion port and a downstream section located downstream of the diversion port; the inlet size of the downstream section is smaller than the outlet size of the upstream section.

[0022] At this time, the inlet of the downstream section and the outlet of the upstream section are separated by a diversion port along the radial distance of the body. That is, the diversion port is on the flow path of the fluid entering the third fluid passage from the fluid inlet end. Therefore, the superimposed negative pressure band of the second fluid outlet makes it easier for some of the fluid in the third fluid passage to be diverted from the diversion port into the first fluid passage.

[0023] As a further improvement of this utility model, the cross-sectional dimension of the downstream road section is smaller than that of the upstream road section.

[0024] Therefore, when the fluid driven by the fluid drive component flows the fluid from the second fluid inlet into the mixing fluid channel, a negative pressure band is also formed at the port formed by the upstream and downstream sections. After the fluid in the mixing fluid channel is driven by the fluid drive component to flow out from the first fluid outlet, a negative pressure band is also formed at the second fluid outlet. Under the combined action of the two negative pressure bands, the fluid velocity in the third fluid passage can be accelerated, and more fluid can flow into the mixing fluid passage through the diversion port, which can maximize the use of the Bernoulli effect and make the fluid in the fluid generating device more directional.

[0025] As a further improvement of this utility model, the cross-section of the downstream section remains constant along the fluid flow direction; and / or, the cross-section of the upstream section remains constant along the fluid flow direction. This improves the smoothness of fluid flow within the third fluid passage.

[0026] As a further improvement to this invention, the diversion port is provided with a first guiding structure to guide fluid flow to the first fluid passage. This makes it easier for some fluid in the third fluid channel to be diverted from the diversion port into the first fluid passage, thereby improving the stability of the fluid generating device.

[0027] As a further improvement to this invention, the first fluid inlet and / or the second fluid inlet are provided with a filter structure. This is to prevent external impurities from affecting the operation of the fluid drive component and the heating component, thereby improving the stability of the fluid generating device.

[0028] As a further improvement of the present invention, the third fluid passage extends along the axial direction of the body, and the mixed fluid passage surrounds the third fluid passage.

[0029] As a further improvement of the present invention, the body is provided with a second guiding structure that guides the fluid in the handle to flow toward the fluid outlet end.

[0030] By setting the second guiding structure, the fluid flow direction is effectively optimized, allowing the fluid in the handle to enter the mixing fluid passage more smoothly. Since the fluid has been guided and stabilized before entering the main body, violent collisions or turbulence that occur after sudden entry into the main body are avoided, which can significantly reduce flow noise.

[0031] As a further improvement of this invention, the second guiding structure forms a flow port through which fluid in the first fluid passage passes. This prevents the arrangement of the second guiding structure from affecting the movement of fluid in the first fluid passage.

[0032] As a further improvement of this utility model, the fluid drive component is disposed inside the handle. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the fluid generating device in the first embodiment of the present invention;

[0034] Figure 2 yes Figure 1 A schematic diagram of the fluid generating device from another angle;

[0035] Figure 3 yes Figure 2 Sectional view along the middle AA direction;

[0036] Figure 4 The fluid generating device in the second embodiment of this utility model corresponds to Figure 2 Sectional view along the middle AA direction;

[0037] Figure 5 The fluid generating device in the third embodiment of this utility model corresponds to Figure 2 Sectional view along the middle AA direction;

[0038] Figure 6 This is a schematic diagram of a specific embodiment of the second guiding structure in this utility model;

[0039] Figure 7 This is a schematic diagram of another specific embodiment of the second guiding structure in this utility model;

[0040] Figure 8 The fluid generating device in the fourth embodiment of this utility model corresponds to Figure 2 Sectional view along the middle AA direction;

[0041] Figure 9 The fluid generating device in the fifth embodiment of this utility model corresponds to Figure 2 Sectional view along the AA direction. Detailed Implementation

[0042] 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 9 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.

[0043] In this specification, it should be noted that, unless otherwise expressly specified and limited, the term "connection," 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.

[0044] 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.

[0045] The fluid generating device 100 includes a body 1, a handle 2 for a user to hold, a fluid driving component 3 for driving fluid flow within the fluid generating device 100, and a heating component 4 for heating at least a portion of the fluid within the fluid generating device 100 to form a hot fluid.

[0046] The body 1 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 1 can also be designed as an irregular cylindrical shape with unequal front and rear diameters or other regular / irregular shapes, which will not be elaborated here.

[0047] It is understood that the appearance of the body 1 is defined by the outer wall of the body 1. In this embodiment, the outer wall includes an outer cylinder 11 extending along the axial direction of the body 1 and an end wall 12 connected to the axial end of the outer cylinder 11. The end wall 12 can be integrally formed with the outer cylinder 11. Of course, the end wall 12 can also be detachably connected to the outer cylinder 11.

[0048] 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 inside the fluid generating device 100 is ejected from the fluid outlet end 1a to achieve drying.

[0049] The main body 1 has a first fluid inlet 13 and a mixing fluid passage 14 arranged at an adjacent fluid outlet end 1a. A first fluid passage 15 is formed between the first fluid inlet 13 and the inlet of the mixing fluid passage 14. That is, the main body 1 has a first fluid passage 15 and a mixing fluid passage 14 that are connected and arranged sequentially along the fluid flow direction. The handle 2 has a second fluid inlet, and a second fluid passage 21 is formed between the second fluid inlet and the inlet of the mixing fluid passage 14. The heating component 4 is used to heat the fluid flowing through the mixing fluid passage 14. After the fluid drive component 3 is activated, part of the external fluid drawn in flows into the first fluid passage 15 through the first fluid inlet 13, and part flows into the second fluid passage 21 through the second fluid inlet. Then, the fluid in the first fluid passage 15 and the fluid in the second fluid passage 21 merge at the inlet of the mixing fluid passage 14 and enter the mixing fluid passage 14. The mixture is then heated by the heating component 4 to form a hot fluid that is ejected from the fluid outlet end 1a.

[0050] In this invention, a second fluid passage 21 and a first fluid passage 15 connected to a mixing fluid passage 14 are respectively provided in the handle 2 and the body 1, and a heating component 4 is provided in the mixing fluid passage 14. After the two fluids merge in the mixing fluid passage 14, they are heated by the heating component 4 to form hot fluid, so that more fluid passes through the heater and forms more hot fluid, which facilitates constant temperature control of the fluid outlet 1a. At the same time, there is no need to increase the cross-sectional area of ​​the hot fluid passage, which helps to reduce the volume of the fluid generating device 100, which is in line with the current trend of miniaturization of fluid generating devices 100.

[0051] In one specific embodiment, the fluid generating device 100 includes only one handle 2, and the extension direction of the handle 2 is perpendicular to the axial direction of the body 1. The second fluid passage 21 located within the handle 2 is perpendicular to the axial direction of the body 1. Of course, this is not a limitation. In other embodiments, the fluid generating device 100 may also include two handles 2, or the handles 2 may intersect the axial direction of the body 1 but not be perpendicular to it.

[0052] In some optional embodiments, the fluid outlet 1a includes a first fluid outlet 1a1 and a second fluid outlet 1a2. The mixing fluid passage 14 is connected to the first fluid outlet 1a1, that is, the hot fluid in the mixing fluid passage 14 is ejected from the first fluid outlet 1a1. The body 1 has a fluid inlet 1b opposite to the fluid outlet 1a and a third fluid passage 16 connecting the fluid inlet 1b and the second fluid outlet 1a2. The fluid in the third fluid passage 16 does not flow through the heating component 4. Therefore, the cold fluid in the third fluid passage 16, after being ejected from the second fluid outlet 1a2, mixes with the hot fluid ejected from the first fluid outlet 1a1, thereby regulating the fluid temperature at the fluid outlet 1a to a preset temperature range.

[0053] In one specific embodiment, the third fluid passage 16 extends axially along the body 1, that is, the third fluid passage 16 is located in the radial center of the body 1, and correspondingly, the second fluid outlet 1a2 is located in the center of the fluid outlet end 1a. The mixing fluid passage 14 surrounds the third fluid passage 16, and correspondingly, the first fluid outlet 1a1 is located around the second fluid outlet 1a2. In this case, the first fluid passage 15 also surrounds the third fluid passage 16. Of course, this is not a limitation; in other embodiments, such as... Figure 4 As shown, in the second embodiment of this utility model, the third fluid passage 16 and the mixing fluid passage 14 / first fluid passage 15 can also be arranged side by side along the radial direction of the body 1.

[0054] Specifically, in combination Figure 3As shown, in an embodiment where the third fluid passage 16 extends axially along the body 1, the body 1 further includes an inner cylinder 17 defining the third fluid passage 16, and an end wall 12 connecting one end of the inner cylinder 17 to the corresponding end of the outer cylinder 11. The outer cylinder 11 is sleeved on the outer periphery of the inner cylinder 17, and a mixed fluid passage 14, a first fluid passage 15, or a partial second fluid passage 21 are formed between the inner cylinder 17 and the outer cylinder 11.

[0055] In this embodiment, the cross-section of the inner cylinder 17 is circular. However, this is not a limitation; in other embodiments, the cross-section of the inner cylinder 17 can also be elliptical or other regular shapes, or irregular rings, such as a ring formed by splicing multiple arc segments. The cross-sectional shapes of the inner cylinder 17 and the outer cylinder 11 can be designed according to specific requirements, and will not be elaborated further here.

[0056] In some optional embodiments, the fluid drive component 3 is configured only to directly drive fluid to be discharged from the second fluid outlet 1a2, or only to directly drive fluid to be discharged from the first fluid outlet 1a1. Therefore, only a small amount of fluid needs to be driven by the fluid drive component 3, which reduces the volume of the fluid drive component 3, thereby reducing the weight and noise of the fluid generating device 100 and improving the user experience; at the same time, it increases the airflow of the fluid generating device 100.

[0057] In one specific implementation method, combined with Figure 3 As shown, the fluid drive component 3 is disposed inside the handle 2, that is, on the second fluid passage 21. Under the direct driving action of the fluid drive component 3, external fluid enters the second fluid passage 21 from the second fluid inlet, and then enters the mixing fluid passage 14 and mixes with the fluid in the first fluid passage 15. After being discharged from the first fluid outlet 1a1, a negative pressure band is formed at the second fluid outlet 1a2. Under the action of the negative pressure band, based on the Bernoulli adsorption effect, external air will enter the third fluid passage 16 from the fluid inlet end 1b to form a cold fluid, and then be discharged at the second fluid outlet 1a2. On the one hand, it can increase the air volume 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, 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. On the other hand, although less fluid is driven by the fluid driving component 3, due to the existence of the first fluid passage 15, under the direct or indirect drive of the fluid driving component 3, some external fluid is mixed into the mixing fluid passage 14 through the first fluid passage 15 to form a hot fluid, so that more fluid passes through the heating component 4, reducing the influence of cold fluid on the constant temperature control of the fluid outlet 1a. At the same time, there is no need to increase the volume of the fluid driving component 3, achieving the effect of both.

[0058] Of course, this is not the only limitation. In other embodiments, the fluid drive component 3 may be disposed only in the third fluid passage 16. In this case, when the fluid drive component 3 directly drives the fluid to be discharged from the second fluid outlet 1a2, a negative pressure band is formed at the first fluid outlet 1a1. Under the action of the negative pressure band, based on the Bernoulli adsorption effect, the outside air will flow into the mixing fluid passage 14 from the first fluid inlet 13 and the second fluid inlet respectively, be heated to form a hot fluid, and flow out from the first fluid outlet 1a1.

[0059] In some optional embodiments, the first fluid inlet 13 is located on the side of the handle 2 facing the fluid inlet end 1b. In this case, the position of the connection between the second fluid passage 21 in the handle 2 and the body 1 is the inlet of the mixing fluid passage 14. The connection and the first fluid inlet 13 form a first fluid passage 15. That is, the first fluid passage 15 is located on the side of the handle 2 facing the fluid inlet end 1b, and the second fluid passage 21 is only located in the handle 2.

[0060] In the embodiment where the first fluid inlet 13 is located on the side of the handle 2 facing the fluid inlet end 1b, and the fluid drive assembly 3 is disposed in the handle 2, when the fluid drive assembly 3 is activated to allow external fluid to enter the second fluid channel from the second fluid inlet and flow through the mixing fluid passage 14 to form a hot fluid, the fluid drive assembly 3 will also generate a certain suction force from the first fluid inlet 13, so that external cold fluid can enter the first fluid passage 15 from the first fluid inlet 13 and enter the mixing fluid passage 14 to form a hot fluid.

[0061] Combination Figure 3 As shown, in the first embodiment of this utility model, the first fluid inlet 13 is located on the side of the handle 2 facing the fluid inlet end 1b. Specifically, the first fluid inlet 13 is a branch port provided in the third fluid passage 16, and the branch port is located between the handle 2 and the fluid inlet end 1b. Part of the fluid entering the third fluid passage 16 from the fluid inlet end 1b flows from the branch port to the first fluid passage 15 and forms a hot fluid through the mixing fluid passage 14, while the other part flows to the second fluid outlet 1a2 to form a cold fluid.

[0062] In some optional embodiments, the inner cylinder 17 / third fluid passage 16 is continuously or intermittently arranged from the diversion port. In this embodiment, the inner cylinder 17 is segmented, that is, the diversion port is annular, dividing the inner cylinder 17 into two segments spaced apart along the axial direction. In other words, the third fluid passage 16 is segmented at the diversion port, which can increase the area of ​​the diversion port, thereby allowing more cold fluid to flow into the first fluid passage 15 through the diversion port, that is, allowing more fluid to flow through the heating component 4, thus forming more hot fluid. Of course, this is not a limitation. In other embodiments, the diversion port can also be a number of through holes spaced apart circumferentially around the inner cylinder 17. In this case, the inner cylinder 17 is a single-section structure.

[0063] It is understood that the shape of the first fluid inlet 13 is not limited to the above-mentioned annular or through hole, but can also be set as an arc, semi-circular, etc., and can be designed according to specific needs.

[0064] In this embodiment, the cross-section of the third fluid passage 16 / inner cylinder 17 can be set to remain constant along the fluid flow direction, so that the fluid in the third fluid passage 16 will not be subject to additional resistance, reducing flow resistance and turbulence, thereby making the fluid flow in the third fluid passage 16 smoother. Of course, this is not a limitation, and the third fluid passage 16 / inner cylinder 17 can also be configured with varying diameters along the fluid flow direction.

[0065] In some optional embodiments, the diversion port is provided with a first guiding structure 5 to guide a portion of the fluid in the third fluid channel to the first fluid passage 15. By providing the first guiding structure 5, it is easier for a portion of the fluid in the third fluid channel to be diverted from the diversion port to the first fluid passage 15, thereby improving the stability of the fluid generating device 100.

[0066] In an embodiment where the inner cylinder 17 is segmented, the inner cylinder 17 / third fluid passage 16 is defined as follows: an upstream segment 16a located upstream of the diversion port and a downstream segment 16b located downstream of the diversion port. (In conjunction with...) Figure 3 As shown, in the first embodiment of this utility model, the first guiding structure 5 is disposed at the inlet end of the downstream road segment 16b, and the first guiding structure 5 extends obliquely from the inlet end toward the upstream road segment 16a. At this time, the first guiding structure 5 and the upstream road segment 16a form a diversion port that is radially spaced along the body 1. That is, the diversion port is on the flow path of the fluid entering the third fluid passage 16 from the fluid inlet end 1b. Therefore, the superimposed negative pressure band of the second fluid outlet 1a2 makes it easier for some of the fluid in the third fluid passage 16 to be diverted from the diversion port into the first fluid passage 15.

[0067] In some optional embodiments, the cross-section of the downstream section 16b remains constant along the fluid flow direction; and / or, the cross-section of the upstream section 16a remains constant along the fluid flow direction. This reduces fluid resistance within the third fluid passage 16, decreases flow resistance and turbulence, and improves the smoothness of fluid flow within the third fluid passage 16.

[0068] Combination Figure 5 As shown, this is the third embodiment of the present invention. In this embodiment, the first fluid inlet 13 is also located on the side of the handle 2 facing the fluid inlet end 1b. The difference between this embodiment and the first embodiment is that the first fluid inlet 13 is not located at the branch port of the third fluid passage 16, but is located on the outer wall of the body 1. In a preferred embodiment, the first fluid inlet 13 is located at the fluid inlet end 1b, specifically on the end wall of the fluid inlet end 1b. Of course, this is not a limitation; in other embodiments, the first fluid inlet 13 may also be located on the outer cylinder between the handle 2 and the fluid inlet end 1b.

[0069] When the fluid drive component 3 is activated, causing external fluid to enter the second fluid channel from the second fluid inlet and flow through the mixing fluid passage 14 to form a hot fluid, the fluid drive component 3 will also generate a certain suction force from the first fluid inlet 13, so that external cold fluid can enter the first fluid passage 15 from the first fluid inlet 13 and enter the mixing fluid passage 14 to form a hot fluid.

[0070] It should be noted that, in the third embodiment of this utility model, a third fluid passage 16 may be provided inside the main body 1. Correspondingly, the fluid inlet end 1b has a third fluid inlet that flows through the third fluid passage 16 and a first fluid inlet 13 that communicates with the first fluid passage 15. In this case, the cross-section of the third fluid passage 16 / inner cylinder 17 can be set to remain constant along the fluid flow direction, so that the fluid on the third fluid passage 16 will not be subjected to additional resistance, reducing flow resistance and turbulence, thereby making the fluid flow on the third fluid passage 16 smoother. Of course, this is not a limitation; the third fluid passage 16 / inner cylinder 17 can also be configured with a variable diameter along the fluid flow direction.

[0071] Alternatively, in the third embodiment of this utility model, the third fluid passage 16 may not be provided in the body 1. In this case, the fluid generating device 100 may only include the first fluid passage 15, the second fluid passage 21, and the mixed fluid passage 14.

[0072] The third embodiment of this utility model is the same as the first embodiment except for the differences mentioned above, and will not be repeated here.

[0073] When the first fluid inlet 13 is located on the side of the handle 2 facing the fluid inlet end 1b, in some optional embodiments, the fluid drive assembly 3 includes a main fluid drive assembly disposed on the handle 2 and a secondary fluid drive assembly disposed at the branch port. By adding the secondary fluid drive assembly, it is beneficial to draw cold fluid from the first fluid inlet 13, thereby allowing more fluid to flow through the mixing fluid passage 14, which in turn generates more hot fluid and further accelerates the flow of fluid within the fluid generating device 100, improving the drying performance of the fluid generating device 100.

[0074] Specifically, the size of the main fluid drive component is larger than that of the secondary fluid drive component, and correspondingly, the air volume of the main fluid drive component is greater than that of the secondary fluid drive component.

[0075] When the first fluid inlet 13 is located on the side of the handle 2 facing the fluid inlet end 1b, in some optional embodiments, the body 1 is provided with a second guiding structure 6 to guide the fluid in the handle 2 toward the fluid outlet end 1a. The second guiding structure 6 is at least partially located within the body 1. By providing the second guiding structure 6, the fluid flow direction is effectively optimized, allowing the fluid in the handle 2 to enter the mixing fluid passage 14 more smoothly. Since the fluid has been guided and stabilized before entering the body 1, violent impacts or turbulence that occur after sudden entry into the body 1 are avoided, which can significantly reduce flow noise.

[0076] In one specific embodiment, the second guiding structure 6 is an arc-shaped guide plate located on the side of the communication port near the fluid inlet end 1b, which can guide the fluid in the handle 2 to flow uniformly toward the fluid outlet end 1a / mixing fluid passage 14, which is beneficial for constant temperature control of the fluid outlet end 1a.

[0077] Furthermore, the second guide structure 6 forms a flow port 61 through which fluid in the first fluid passage 15 passes. This prevents the arrangement of the second guide structure 6 from affecting the movement of fluid in the first fluid passage 15.

[0078] Combination Figure 6 As shown, in one specific embodiment of the second guide structure 6, the flow port 61 is directly disposed through the arc-shaped guide plate. Combined with... Figure 7 As shown, in another specific embodiment of the second guide structure 6, the gap between the arc-shaped guide plate and the inner cylinder 17 forms a communication port, and part of the fluid in the first fluid passage 15 flows into the mixing fluid passage 14 through the gap between the arc-shaped guide plate and the inner cylinder 17. Of course, this is not a limitation.

[0079] In some optional embodiments, the first fluid inlet 13 is located on the side of the handle 2 facing the fluid outlet end 1a, that is, the diversion port is located between the handle 2 and the fluid outlet end 1a. At this time, part of the second fluid passage 21 is located inside the handle 2, and another part of the second fluid passage 21 is located inside the body 1, that is, the area between the connecting port and the outlet end of the first fluid passage 15 is also the second fluid passage 21. The second fluid passage 21 located inside the body 1 is arranged around the third fluid passage 16, and the fluid flow direction of the second fluid passage 21 located inside the body 1 is parallel to the fluid flow direction within the second fluid passage 21.

[0080] In the embodiment where the first fluid inlet 13 is located on the side of the handle 2 facing the fluid outlet end 1a, the inlet size of the downstream section 16b is smaller than the outlet size of the upstream section 16a. At this time, the inlet of the downstream section 16b and the outlet of the upstream section 16a are separated by a flow branch port along the radial distance of the body 1. That is, the flow branch port is on the flow path of the fluid entering the third fluid passage 16 from the fluid inlet end 1b. Therefore, the superimposed negative pressure band of the second fluid outlet 1a2 makes it easier for some of the fluid in the third fluid passage to be diverted from the flow branch port into the first fluid passage 15.

[0081] Combination Figure 8 As shown, when the first fluid inlet 13 is located on the side of the handle 2 facing the fluid outlet 1a, in the fourth embodiment of this utility model, the cross-sectional dimension of the downstream section 16b is smaller than that of the upstream section 16a. Therefore, when the fluid drive assembly 3 drives the fluid to flow from the second fluid inlet into the mixing fluid channel, a negative pressure band is also formed at the port formed by the upstream section 16a and the downstream section 16b. After the fluid drive assembly 3 drives the fluid in the mixing fluid channel to flow out from the first fluid outlet 1a1, a negative pressure band is also formed at the second fluid outlet 1a2. Under the combined action of the two negative pressure bands, the fluid velocity in the third fluid passage 16 can be accelerated, and more fluid can flow into the mixing fluid passage 14 through the diversion port, maximizing the utilization of the Bernoulli effect and making the fluid in the fluid generating device 100 more directional.

[0082] The aforementioned port can also be understood as the outlet 15a of the first fluid passage 15.

[0083] Of course, this is not the limit; in combination Figure 9 As shown, in the fifth embodiment of this utility model, when the first fluid inlet 13 is located on the side of the handle 2 facing the fluid outlet end 1a, only the inlet of the downstream section 16b is smaller than the outlet size of the upstream section 16a.

[0084] The fourth and fifth embodiments of this utility model are the same as other embodiments except for the differences mentioned above, and will not be described again here.

[0085] In some optional embodiments, the first fluid inlet 13 and / or the second fluid inlet are provided with a filter structure. The filter structure may be an air inlet screen and / or a filter screen to prevent external impurities from affecting the operation of the fluid drive component 3 and the heating component 4, thereby improving the stability of the fluid generating device 100.

[0086] In some optional embodiments, 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.

[0087] 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.

[0088] In some optional embodiments, the fluid generating device 100 further includes a secondary mixing mechanism located near the fluid outlet 1a of the main body 1. The secondary mixing mechanism is used to mix the hot fluid flowing out of the first fluid outlet 1a1 and the cold fluid flowing out of the second fluid outlet 1a2 to improve the temperature uniformity of the fluid outlet 1a.

[0089] In some optional embodiments, the secondary air mixing mechanism is integrally formed with the main body 1, and the secondary air mixing mechanism is located at the first fluid outlet 1a1 and the second fluid outlet 1a2. In this case, 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 accessory that is detachably connected to the fluid outlet end 1a of the main body 1.

[0090] The fluid generating device 100 also includes a circuit board for controlling its operation. 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 2 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 / 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.

[0091] In a preferred embodiment, the fluid generating device 100 further includes a heat insulation component, and the heating component 4 is disposed inside the heat insulation component to isolate the heat of the heating component 4 and prevent the position on the main body 1 where the heating component 4 is disposed from overheating, thereby affecting the user's experience.

[0092] 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.

[0093] 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 second fluid outlet 1a2.

[0094] 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.

[0095] The aforementioned accessories include, but are not limited to: air collector nozzles, diffuser nozzles, styling nozzles, negative ion generators, essential oil diffusers, etc.

[0096] 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.

[0097] In some optional embodiments, the fluid generating device 100 also includes an NFC module located on the body 1 and / or the handle 2, 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.

[0098] In some optional embodiments, the fluid generating device 100 further includes a purification module disposed in the body 1 and / or handle 2, 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.

[0099] 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.

[0100] 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.

[0101] In some optional embodiments, the fluid generating device 100 further includes an indicator light module disposed on the body 1 and / or the handle 2, and the indicator light module is communicatively connected to the circuit board. The indicator light module emits different colors to indicate the working 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.

[0102] 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.

[0103] Compared with the prior art, the fluid generating device 100 of this utility model provides a second fluid passage 21 and a first fluid passage 15 connected to the mixing fluid passage 14 in the handle 2 and the body 1, respectively, and sets the heating component 4 in the mixing fluid passage 14. After the two fluids merge in the mixing fluid passage 14, they are heated by the heating component 4 to form hot fluid, so that more fluid passes through the heater and forms more hot fluid, which facilitates constant temperature control of the fluid outlet end 1a. At the same time, there is no need to increase the cross-sectional area of ​​the hot fluid passage, which helps to reduce the volume of the fluid generating device 100, which is in line with the current trend of miniaturization of fluid generating devices 100.

[0104] 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.

[0105] 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 first fluid inlet, a fluid outlet end, and a mixing fluid passage disposed adjacent to the fluid outlet end; a first fluid passage is formed between the first fluid inlet and the inlet of the mixing fluid passage; The handle has a second fluid inlet, which forms a second fluid passage with the inlet of the mixing fluid passage; A fluid drive assembly for drawing fluid through the first fluid inlet and / or the second fluid inlet; A heating assembly for heating the fluid flowing through the mixed fluid passage.

2. The fluid generating device as described in claim 1, characterized in that, The body has a fluid inlet end opposite to the fluid outlet end; the first fluid inlet is located at the fluid inlet end.

3. The fluid generating device as described in claim 1, characterized in that, The fluid outlet includes a first fluid outlet and a second fluid outlet, and the mixing fluid passage is connected to the first fluid outlet; The body has a fluid inlet end opposite to the fluid outlet end and a third fluid passage connecting the fluid inlet end and the second fluid outlet. When the fluid drive assembly directly drives the fluid to be discharged from the second fluid outlet, a negative pressure band is formed at the first fluid outlet; or, when the fluid drive assembly directly drives the fluid to be discharged from the first fluid outlet, a negative pressure band is formed at the second fluid outlet.

4. The fluid generating device as described in claim 3, characterized in that, The first fluid inlet is a branch port located in the third fluid passage; part of the fluid entering the third fluid passage from the fluid inlet flows from the branch port to the first fluid passage, and the other part flows to the second fluid outlet.

5. The fluid generating apparatus as described in claim 4, characterized in that, The diversion port is located between the handle and the fluid inlet end.

6. The fluid generating apparatus as described in claim 2 or 5, characterized in that, The fluid drive assembly includes a main fluid drive assembly disposed on the handle and a secondary fluid drive assembly disposed at the first fluid inlet.

7. The fluid generating apparatus as claimed in claim 4, characterized in that, The diversion port is located between the handle and the fluid outlet.

8. The fluid generating apparatus as claimed in claim 7, characterized in that, The third fluid pathway includes an upstream section located upstream of the diversion outlet and a downstream section located downstream of the diversion outlet; the inlet size of the downstream section is smaller than the outlet size of the upstream section.

9. The fluid generating apparatus as claimed in claim 8, characterized in that, The cross-sectional dimension of the downstream road segment is smaller than that of the upstream road segment.

10. The fluid generating apparatus as claimed in claim 9, characterized in that, The cross-section of the downstream road segment remains constant along the fluid flow direction; and / or, the cross-section of the upstream road segment remains constant along the fluid flow direction.

11. The fluid generating apparatus as claimed in claim 4, characterized in that, The diversion port is provided with a first guiding structure to guide the fluid flow to the first fluid passage.

12. The fluid generating apparatus as claimed in claim 1, characterized in that, The first fluid inlet and / or the second fluid inlet are provided with a filter structure.

13. The fluid generating apparatus as claimed in claim 4, characterized in that, The third fluid passage extends along the axial direction of the body, and the mixed fluid passage surrounds the third fluid passage.

14. The fluid generating apparatus as claimed in claim 2 or 5, characterized in that, The body is provided with a second guiding structure that guides the fluid in the handle toward the fluid outlet end.

15. The fluid generating apparatus as claimed in claim 14, characterized in that, The second guiding structure forms a flow port through which fluid in the first fluid passage passes.

16. The fluid generating apparatus as claimed in claim 1, characterized in that, The fluid drive assembly is located inside the handle.

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