A noise reduction incremental air outlet device and a toilet drying device

Abstract

A kind of noise reduction increment air outlet device and closestool drying device, including inner and outer sleeve of inner air pipe and outer air pipe, the inner cavity of inner air pipe constitutes inner air duct, the gap between inner air pipe and outer air pipe constitutes outer air duct, inner air pipe inner wall is equipped with multiple annular fins sequentially distributed along its air outlet direction, the gap between each annular fin and inner air pipe forms air guide groove respectively, the periphery pipe wall of inner air pipe is equipped with multiple through holes leading to air guide groove respectively;The other end of inner air duct is equipped with main air inlet, the other end of outer air duct is equipped with secondary air inlet, main air inlet is used to blow into the airflow generated by fan, and along with the airflow generated by fan flows along inner air duct, negative pressure is formed in outer air duct, thus in the premise that fan does not increase speed, external environment air is merged into inner air duct from outer air duct through through hole, to increase air volume of air outlet.Therefore, the wind speed of merging into inner air duct is lower, and the noise generated by colliding with the outside of next stage annular fin is smaller, to achieve the effect of reducing wind noise.

Description

Technical Field

[0001] This invention relates to the field of air duct technology, and in particular to a noise reduction and speed-up air outlet device and a toilet drying device. Background Technology

[0002] Common smart toilet drying devices include a centrifugal fan, air duct, and air outlet, which can effectively dry the user's private parts. Due to the limited installation space of smart toilets, the airflow generated by a typical centrifugal fan is relatively weak and cannot completely blow away water droplets adhering to the skin. Increasing the speed of the centrifugal fan results in a significant increase in fan noise and wind noise. Furthermore, because the air duct cross-section is generally square, the air inside the duct is prone to turbulence, resulting in significant energy loss during airflow and a poor overall user experience. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this invention is to provide a noise reduction and increased air output device and a toilet drying device.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] An air outlet device for noise reduction and enhancement includes an air duct body and an air nozzle. The air nozzle is disposed at one end of the air duct body. The air duct body includes an inner air duct and an outer air duct that are fitted together. The inner cavity of the inner air duct forms an inner air channel, and the gap between the inner and outer air ducts forms an outer air channel. The inner air duct has several through holes, each of which connects to the inner and outer air channels. The inner wall of the inner air duct has multiple annular fins arranged sequentially along its air outlet direction. One end of each annular fin is fixed to the inner wall surface of the inner air duct, and the other end of each annular fin extends along the air outlet direction. The gaps between each of the annular fins and the inner air duct form air guide grooves. The inner air duct wall is provided with a plurality of through holes leading to each air guide groove. One end of the inner air duct and one end of the outer air duct are respectively connected to the air nozzle. The other end of the inner air duct is provided with a main air inlet, and the other end of the outer air duct is provided with a secondary air inlet. The main air inlet is used to blow in the airflow generated by the fan. As the airflow generated by the fan flows along the inner air duct, a negative pressure is formed in the inner air duct to draw in outside air from the secondary air inlet into the outer air duct and into the inner air duct through the through holes.

[0006] Furthermore, the annular fin includes a connecting portion and an air guide portion distributed sequentially along the air outlet direction. One end of the connecting portion is connected to or integrally formed with the inner wall of the inner air duct, and the other end of the connecting portion is connected to or integrally formed with the air guide portion. The gap between the connecting portion and the inner air duct gradually increases from one end to the other.

[0007] Furthermore, the inner and outer air ducts have circular cross-sections and are coaxially mounted.

[0008] Furthermore, the nozzle is provided with an acceleration air duct, the inner air duct is connected to the acceleration air duct, and the air passage area of ​​the acceleration air duct gradually decreases along the air outlet direction.

[0009] Furthermore, the nozzle is equipped with a rectifier plate that extends along the air outlet direction.

[0010] Furthermore, fins are respectively provided between the two tongue surfaces of the rectifier and the inner wall surface of the nozzle.

[0011] Furthermore, the fins are bent radially toward the duct body, and air guide surfaces are provided at both ends of the fins. The thickness of the rectifier plate gradually increases along the air outlet direction.

[0012] Furthermore, it also includes an installation component having inner and outer walls. The inner cavity formed by the inner wall of the installation component is connected to the other end of the inner air duct. One end of the gap between the outer wall and the inner wall of the installation component is connected to the other end of the outer air duct, and the other end is open to the outside. The fan is installed in the inner wall of the installation component.

[0013] Furthermore, an annular positioning part is provided between the inner wall of the mounting component and the inner air duct, for adjusting the distance between the fan and the air duct body.

[0014] A toilet drying device includes a fan and a noise-reducing and increasing air outlet as described above, wherein the air outlet of the fan is connected to the main air inlet.

[0015] The beneficial effects of this invention are:

[0016] 1. This invention proposes a noise reduction and increased airflow device, comprising an inner duct and an outer duct, which are fitted together. The inner cavity of the inner duct forms an inner air channel, and the gap between the inner and outer ducts forms an outer air channel. The inner wall of the inner duct is provided with multiple annular fins arranged sequentially along its airflow direction. The gaps between each annular fin and the inner duct form air guide grooves. Multiple through holes leading to the air guide grooves are provided on the perimeter wall of the inner duct. A main air inlet is located at one end of the inner duct, and a secondary air inlet is located at the other end of the outer duct. The main air inlet is used to blow in airflow generated by a fan. As the airflow generated by the fan flows along the inner duct, a negative pressure is formed in the outer duct. Therefore, without increasing the fan speed, ambient air from the outer duct flows into the inner duct through the through holes, thereby increasing the airflow volume. Simultaneously, the airflow velocity entering the inner duct is low, resulting in less noise generated by the collision with the outer side of the next-stage annular fins, thus reducing wind noise.

[0017] 2. The present invention proposes a noise reduction and incremental air outlet device, wherein the annular fins include a connecting part and an air guide part distributed sequentially along the air outlet direction. The gap between the connecting part and the inner air duct gradually increases from one end to the other end, that is, the connecting part has a certain tilt angle relative to the horizontal direction. This tilt angle can reduce the noise and wind speed loss caused by the wind entering the inner air duct from the outer air duct impacting the connecting part.

[0018] 3. The present invention proposes a noise reduction and increased air outlet device, wherein the inner and outer air ducts have circular cross-sections, which can reduce energy loss during air flow compared to square air ducts, and the inner and outer air ducts are coaxially mounted, so that air can be uniformly introduced from the outer air duct in all directions from the inner air duct.

[0019] 4. The present invention proposes a noise reduction and incremental air outlet device, wherein the nozzle is provided with an acceleration air duct, and the air passage area of ​​the acceleration air duct gradually decreases along the air outlet direction to achieve the effect of accelerating the air body.

[0020] 5. The present invention proposes a noise reduction and air output device, wherein a rectifier tongue is provided inside the air nozzle, and fins are respectively provided between the two tongue surfaces of the rectifier tongue and the inner wall surface of the air nozzle. The fins are bent in the radial direction of the air duct body, and air guide surfaces are provided at both ends of the fins. The thickness of the rectifier gradually increases along the air output direction. The fins and the rectifier together play the role of further rectifying and accelerating the air. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is an exploded view of a noise reduction and increased airflow device according to the present invention;

[0023] Figure 2 This is a cross-sectional view of a noise reduction and incremental air outlet device according to the present invention;

[0024] Figure 3 This is a magnified view of a portion of area A in Figure 1.

[0025] Figure 4 This is a magnified view of a portion of Figure B.

[0026] Figure 5 This is a partial cross-sectional view of the nozzle of a noise reduction and incremental air outlet device according to the present invention;

[0027] Figure 6This is a partial cross-sectional view of the annular positioning part of a noise reduction and incremental air outlet device according to the present invention;

[0028] Figure 7 This is a schematic diagram of the mounting components of a noise reduction and incremental air outlet device according to the present invention;

[0029] Figure 8 This is a schematic diagram of the internal air duct of a noise reduction and incremental air outlet device according to the present invention;

[0030] In the figure, 10 is the nozzle; 101 is the acceleration channel; 201 is the rectifier; 202 is the fin; 30 is the inner air duct; 301 is the through hole; 40 is the outer air duct; 50 is the annular fin; 501 is the connecting part; 502 is the air guide part; 60 is the air guide groove; 70 is the inner air duct; 80 is the outer air duct; 90 is the mounting part; 901 is the inner air intake; 902 is the outer air intake; 100 is the annular positioning part; 1001 is the guide slope; 1002 is the abutment surface; 1101 is the first protrusion; 1102 is the second protrusion. Detailed Implementation

[0031] The following is combined Figure 1-8 The present invention will be described in detail below.

[0032] A noise reduction and increased air outlet device includes a duct body and a nozzle 10. The nozzle 10 is located at one end of the duct body. The duct body includes an inner duct 30 and an outer duct 40, which are fitted together. The inner cavity of the inner duct 30 forms an inner air duct 70, and the gap between the inner duct 30 and the outer duct 40 forms an outer air duct 80. The inner duct 30 has several through holes 301, each of which connects to the inner air duct 70 and the outer air duct 80. The inner wall of the inner duct 30 has a plurality of annular fins 50 arranged sequentially along its air outlet direction. One end of each annular fin 50 is fixed to the inner wall surface of the inner duct 30, and the other end of each annular fin 50 is arranged along its air outlet direction. Extending outwards, the gaps between each annular fin 50 and the inner air duct 30 respectively form air guide grooves 60. The inner air duct 30 has multiple through holes 301 on its wall corresponding to each air guide groove 60. One end of the inner air duct 70 and one end of the outer air duct 80 are respectively connected to a vent 10. The other end of the inner air duct 70 is provided with a main air inlet, and the other end of the outer air duct 80 is provided with a secondary air inlet. The main air inlet is used to blow in the airflow generated by the fan. As the airflow generated by the fan flows along the inner air duct 70, a negative pressure is formed in the inner air duct 70 so that outside air is drawn in from the secondary air inlet into the outer air duct 80 and enters the inner air duct 70 through the through holes 301.

[0033] Therefore, without increasing the fan speed, ambient air from the outside enters the inner air duct 70 through the through-hole 301 from the outer air duct 80, thereby increasing the airflow volume and strength to blow away water droplets adhering to the skin surface. Simultaneously, because the airflow velocity entering the inner air duct 70 is relatively low, the noise generated by its collision with the outer side of the next-stage annular fin 50 is minimal, thus reducing wind noise.

[0034] In this embodiment, as Figure 3 As shown, the annular fin 50 includes a connecting portion 501 and a guide portion 502 distributed sequentially along the air outlet direction. One end of the connecting portion 501 is connected to or integrally formed with the inner wall of the inner air duct 30, and the other end of the connecting portion 501 is connected to or integrally formed with the guide portion 502. The gap between the connecting portion 501 and the inner air duct 30 gradually increases from one end to the other, that is, the connecting portion 501 has a certain tilt angle relative to the horizontal direction. This tilt angle can reduce the noise and wind speed loss caused by the wind flowing from the outer air duct 80 into the inner air duct 70 impacting the connecting portion 501.

[0035] In this embodiment, the inner air duct 30 and the outer air duct 40 have circular cross-sections. Specifically, the inner air duct 30 and the outer air duct 40 are circular pipes, which can reduce the energy loss when the air flows compared to a square air duct. Furthermore, the inner air duct 30 and the outer air duct 40 are coaxially mounted, so that the inner air duct 70 can be uniformly supplied with air from the outer air duct 80 in all directions.

[0036] In this embodiment, as Figure 4 As shown, the nozzle 10 has an accelerating air duct inside, and the inner air duct 70 is connected to the accelerating channel 101. The air passage area of ​​the accelerating air duct gradually decreases along the air outlet direction, thereby accelerating the air discharged from the inner air duct 70. Furthermore, the nozzle 10 has a first protrusion 1101 on the side with a smaller air passage area in the accelerating air duct. The first protrusion 1101 is inserted into the outer air duct 80, thereby installing the air duct body onto the nozzle 10. Further, as... Figure 6 As shown, a rectifier 201 is provided inside the nozzle 10. Specifically, the rectifier 201 is provided at the end with a smaller air passage area, and the rectifier 201 extends along the air outlet direction. A fin 202 is respectively provided between the two tongue surfaces of the rectifier 201 and the inner wall surface of the nozzle 10. The fin 202 is bent radially toward the duct body, and air guide surfaces are provided at both ends of the fin 202. The rectifier 201 is streamlined, and its thickness gradually increases along the air outlet direction. The fin 202 and the rectifier 201 together further rectify and accelerate the airflow.

[0037] In this embodiment, as Figure 7As shown, the device also includes a mounting component 90, which has inner and outer walls. The inner cavity formed by the inner wall of the mounting component 90 is connected to the other end of the inner air duct 70. One end of the gap between the outer and inner walls of the mounting component 90 is connected to the other end of the outer air duct 40, and the other end is open to the outside. The fan is installed in the inner wall of the mounting component 90. Specifically, the inner cavity formed by the inner wall of the mounting component 90 constitutes an inner air intake duct 901, and the gap between the outer and inner walls of the mounting component 90 constitutes an outer air intake duct 902. The outer air intake duct 902 has several mutually spaced second protrusions 1102, which are inserted into the other end of the outer air duct 80. Furthermore, an annular positioning part 100 is provided between the inner wall of the mounting component 90 and the inner air duct 30 for adjusting the distance between the fan and the air duct body. Specifically, the annular positioning part 100 has a hollow structure, with its two ends connected to the inner air duct 70 and the inner air intake duct 901, respectively. One end of the annular positioning part 100 connected to the inner air duct 70 is provided with a guide slope 1001. The guide slope 1001 is inserted into the inner air duct 70 and fits against the connecting part 501 located at the inlet of the inner air duct 70, thereby enabling quick positioning and installation of the annular positioning part 100. One end of the annular positioning part 100 connected to the inner air intake duct 901 is provided with an abutment surface 1002 for abutting against the inner wall of the mounting component 90. Therefore, by controlling the height H of the annular positioning part 100, such as... Figure 6 As shown, adjust the distance between the mounting component 90 and the duct body, thereby adjusting the distance between the fan and the duct body.

[0038] The working principle of the noise reduction and incremental air outlet device proposed in this invention is as follows:

[0039] When the fan is started, the gas in the inner air duct 70 flows towards the nozzle 10 under the action of wind pressure. The flow of gas in the inner air duct 70 causes negative pressure to be generated in the inner air duct 70, so that the external ambient air flows into the air guide trough 60 through the outer air duct 80 and the through hole 301. Therefore, under the same fan power, the air volume of the air outlet in the inner air duct 70 is increased. In addition, the air velocity of the air entering the air guide trough 60 is relatively low, and the noise generated by the collision with the outer side of the next stage fin is smaller, which reduces the collision between the airflow and the fin and achieves the effect of reducing wind noise. At the same time, the acceleration air duct in the nozzle 10 accelerates the air discharged from the inner air duct 70, and the rectifier plate 201 and fins in the acceleration air duct further rectify the air and prevent the air from being disturbed.

[0040] The present invention also proposes a toilet drying device, including a fan and an air outlet device with noise reduction and increased efficiency as described above, wherein the air outlet of the fan is connected to the main air inlet.

[0041] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand and implement the present invention. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A noise reduction and increased air outlet device, comprising a duct body and an air nozzle, wherein the air nozzle is disposed at one end of the duct body, characterized in that, The duct body includes an inner duct and an outer duct, which are fitted together. The inner cavity of the inner duct forms an inner air duct, and the gap between the inner and outer ducts forms an outer air duct. The inner duct has several through holes, each of which connects to the inner and outer air ducts. The inner wall of the inner duct has multiple annular fins arranged sequentially along its air outlet direction. One end of each annular fin is fixed to the inner wall of the inner duct, and the other end of each annular fin extends along the air outlet direction. The gaps between each annular fin and the inner duct form... The inner duct has multiple through holes on its wall corresponding to each air guide groove. One end of the inner duct and one end of the outer duct are connected to the air nozzle. The other end of the inner duct has a main air inlet and the other end of the outer duct has a secondary air inlet. The main air inlet is used to blow in the airflow generated by the fan. As the airflow generated by the fan flows along the inner duct, a negative pressure is formed in the inner duct to draw in outside air from the secondary air inlet into the outer duct and into the inner duct through the through holes.

2. The noise reduction and increased air outlet device as described in claim 1, characterized in that, The annular fins include connecting portions and air guide portions distributed sequentially along the air outlet direction. One end of the connecting portion is connected to or integrally formed with the inner wall of the inner air duct, and the other end of the connecting portion is connected to or integrally formed with the air guide portion. The gap between the connecting portion and the inner air duct gradually increases from one end to the other.

3. The noise reduction and increased air outlet device as described in claim 1, characterized in that, The inner and outer air ducts have circular cross-sections and are coaxially mounted.

4. The noise reduction and increased air outlet device as described in claim 1, characterized in that, The nozzle is equipped with an acceleration air duct, the inner air duct is connected to the acceleration air duct, and the air passage area of ​​the acceleration air duct gradually decreases along the air outlet direction.

5. The air outlet device with noise reduction increment as described in claim 1 or 4, characterized in that, The nozzle is equipped with a rectifier plate that extends along the air outlet direction.

6. The noise reduction and increased air outlet device as described in claim 5, characterized in that, A fin is provided between the two tongue surfaces of the rectifier and the inner wall surface of the nozzle.

7. The noise reduction and increased air outlet device as described in claim 6, characterized in that, The fins are bent radially toward the duct body, and air guide surfaces are provided at both ends of the fins. The thickness of the rectifier plate gradually increases along the air outlet direction.

8. The air outlet device with noise reduction increment as described in claim 1, characterized in that, It also includes an installation component having inner and outer walls. The inner cavity formed by the inner wall of the installation component is connected to the other end of the inner air duct. One end of the gap between the outer wall and the inner wall of the installation component is connected to the other end of the outer air duct, and the other end is open to the outside. The fan is installed in the inner wall of the installation component.

9. The air outlet device with noise reduction increment as described in claim 8, characterized in that, An annular positioning part is provided between the inner wall of the mounting component and the inner air duct, which is used to adjust the distance between the fan and the air duct body.

10. A toilet drying device, comprising a fan, characterized in that, It also includes an air outlet device for noise reduction increment as described in any one of claims 1-9, wherein the air outlet of the fan is connected to the main air inlet.

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