CN218424431U

CN218424431U - Flow guide nozzle, cleaning module and columnar radar cleaning device

Info

Publication number: CN218424431U
Application number: CN202222611733.1U
Authority: CN
Inventors: 周瑞彬; 张彦福; 智立勃; 任锐; 龙思习
Original assignee: Apollo Intelligent Technology Beijing Co Ltd
Current assignee: Apollo Intelligent Technology Beijing Co Ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-02-03
Anticipated expiration: 2032-09-29

Abstract

The utility model provides a water conservancy diversion nozzle, cleaning module and column radar belt cleaning device relates to the autopilot technical field, especially relates to the laser radar field. The specific implementation scheme is as follows: the utility model provides a water conservancy diversion nozzle includes: the device comprises a shell, an accommodating cavity, a fluid leading-in structure and a flow guide structure; the shell is hollow to form the accommodating cavity; the fluid introducing structure penetrates through the fluid introducing end of the shell and is communicated with the accommodating cavity; the flow guide structure is arranged on one side, close to the fluid outlet end of the shell, in the accommodating cavity; the flow guide structure comprises a plurality of flow guide strips, and a flow guide channel is formed between two adjacent flow guide strips. The flow guide structure arranged in the flow guide nozzle can divide the cleaning fluid along the flow guide structure, so that the fluid is uniformly sprayed out through the edge of the fluid outlet end of the accommodating cavity, and the problem of uneven distribution of the fluid sprayed on the surface of the radar is solved.

Description

Flow guide nozzle, cleaning module and columnar radar cleaning device

Technical Field

The utility model relates to an autopilot technical field especially relates to a water conservancy diversion nozzle, cleaning module and column radar belt cleaning device.

Background

Lidar is widely used in vehicles, particularly autonomous vehicles. Laser radar is used for information such as perception vehicle, pedestrian, lane line, and when laser radar was sheltered from by rainwater, mud dirt, insect etc. in the use, can lead to some cloud data distortion, unable normal work. Therefore, there is a need for full cleaning of the lidar.

In the related art, the fluid for cleaning in the laser radar cleaning device has serious vortex in the nozzle, which causes energy loss and turbulent flow and seriously affects the cleaning effect; meanwhile, fluid flows along the wall surface in the nozzle and converges towards the two sides of the nozzle, so that the fluid sprayed on the surface of the radar is not uniformly distributed, and a V-shaped large-area is formed in the middle of the nozzle, so that the surface of the radar corresponding to the area cannot be cleaned, and the laser radar can be influenced to transmit and receive laser signals.

SUMMERY OF THE UTILITY MODEL

The disclosure provides a flow guide nozzle, a cleaning module and a columnar radar cleaning device.

According to an aspect of the present disclosure, there is provided a flow guide nozzle including: the device comprises a shell, an accommodating cavity, a fluid leading-in structure and a flow guide structure; the shell is hollow to form the accommodating cavity; the fluid introducing structure penetrates through the fluid introducing end of the shell and is communicated with the accommodating cavity; the flow guide structure is arranged on one side, close to the fluid outlet end of the shell, in the accommodating cavity; the flow guide structure comprises a plurality of flow guide strips, and a flow guide channel is formed between two adjacent flow guide strips.

According to a second aspect of the present disclosure, there is provided a cleaning module comprising a base, a flow directing nozzle as described in any of the present applications, and a fluid valve; one side of the base is used for fixing an object to be cleaned; the flow guide nozzle is fixed on the other side of the base; the fluid valve is connected to the bottom of the diversion nozzle and communicated with the fluid introducing structure.

According to the third aspect of this disclosure, a cylindrical radar cleaning device is provided, including a plurality of the cleaning module of any in this application, it is a plurality of the cleaning module distributes on the circle with the central point of waiting to wash the radar as the centre of a circle, with the bottom surface radius of waiting to wash the radar as the radius.

The utility model provides a water conservancy diversion nozzle, cleaning module and column radar belt cleaning device. The flow guide structure arranged in the flow guide nozzle can divide the fluid for cleaning along the flow guide structure, so that the fluid is relatively uniformly sprayed out through the edge of the fluid outlet end of the accommodating cavity, and the distribution uniformity of the sprayed fluid can be improved.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present disclosure, nor do they limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other embodiments can be obtained by those skilled in the art according to the drawings.

The drawings are included to provide a better understanding of the present solution and are not to be construed as limiting the present disclosure. Wherein:

FIG. 1 is a schematic diagram of a first shell and a second shell stacked to form a receiving cavity according to an embodiment of the disclosure;

FIG. 2 is a schematic diagram of one configuration of a flow directing nozzle in accordance with an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a cylindrical radar cleaning device according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of a clean mixed fluid spray path of a related art cylindrical radar washing apparatus;

FIG. 5 is a schematic view of a clean mixed fluid spray path of a cylindrical radar washing apparatus in an embodiment of the present disclosure.

Description of reference numerals:

a cleaning module 10;

a flow guide nozzle 100;

a housing 110, a first shell plate 111, a second shell plate 112, a third shell plate 113, a fourth shell plate 114, a fluid introduction port 110-a, a fluid discharge port 110-b;

a housing cavity 120;

fluid introduction structure 130, air inlet 131, water inlet 132;

a flow guide structure 140, a flow guide strip 141;

base 200, bolt 201;

fluid valve 300, air inlet valve 301, water inlet valve 302;

the object 20 to be cleaned.

Detailed Description

Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings, in which various details of the embodiments of the disclosure are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

Referring to fig. 1 and 2, an embodiment of a first aspect of the present disclosure provides a flow directing nozzle 100, including a housing 110, a receiving cavity 120, a fluid introduction structure 130, and a flow directing structure 140; the housing 110 is hollow to form a containing cavity 120; the fluid introducing structure 130 passes through the fluid introducing end 110-a of the housing 110 to communicate with the accommodating chamber 120; the flow guide structure 140 is disposed in the accommodating chamber 120 at a side close to the fluid outlet end 110-b of the housing 110; the flow guiding structure 140 includes a plurality of flow guiding strips 141, and a flow guiding channel is formed between two adjacent flow guiding strip 141 structures.

The fluid leading-in end 110-a of the shell 110 and the fluid leading-out end 110-b of the shell 110 are two ends corresponding to each other in position relation; for example, the upper end corresponds to the lower end, and the left end corresponds to the right end; as shown in FIG. 1, the fluid inlet end 110-a of the housing 110 is considered a lower end and the fluid outlet end 110-b of the housing 110 is considered an upper end.

As shown in fig. 1 and 2, the present disclosure provides a flow guide nozzle 1 including: a housing 110, a receiving chamber 120, a fluid introduction structure 130, and a flow guide structure 140. The housing 110 is hollow to form a containing cavity 120, the fluid introducing structure 130 is communicated with the containing cavity 120 through the fluid introducing end 110-a of the housing 110, and the fluid flows into the containing cavity 120 through the fluid introducing structure 130; because the flow guide structure 140 is arranged on one side of the fluid outlet end 110-b close to the housing 110 in the accommodating cavity 120, the flow guide structure 140 includes a plurality of flow guide strips 141, the number of the flow guide strips 141 can be set in a customized manner according to the size of a required nozzle, for example, the flow guide strips can be set to be 5 to 11, as shown in fig. 1, for example, seven flow guide strips 141 are taken as an example, a flow guide channel is formed between two adjacent flow guide strip 141 structures, and eight flow guide channels are formed between the seven flow guide strips and between the flow guide strips and the cavity wall of the accommodating cavity 120; the fluid in the accommodating cavity 120 flows into the flow guide structure 140, passes through the eight flow guide channels, and is finally ejected out of the fluid outlet end 110-b of the housing 110, so that the directional flow guide of the fluid is realized. The uniformity of the distribution of the ejected fluid can be improved by ejecting the fluid relatively uniformly through the edge of the fluid outlet end 110-b of the receiving chamber.

In some embodiments of the disclosure, the fluid outlet end 110-b of the housing 110 is provided with fluid nozzles, each fluid nozzle corresponds to one fluid guiding channel, and the fluid is ejected from the fluid nozzles after flowing through the fluid guiding channels, so that the directional fluid guiding of the fluid is realized

In some embodiments of the present disclosure, as shown in fig. 2, the casing 110 includes a first casing plate 111, a second casing plate 112, and a third casing plate 113, the first casing plate 111, the second casing plate 112, and the third casing plate 113 are stacked to constitute the casing 110, and the second casing plate 112 is disposed between the first casing plate 111 and the third casing plate 113.

The first shell plate 111, the second shell plate 112 and the third shell plate 113 are stacked to form the shell 110, so that the shell 110 is simple in structure and the manufacturing cost is reduced.

In some embodiments of the present disclosure, as shown in fig. 1 and 2, the fluid introduction structure 130 and the flow guide structure 140 are both disposed on the first shell plate 111; the second shell plate 112 is provided with an arched gap, the second shell plate 112 is stacked on the first shell plate 111, the fluid introducing structure 130 and the flow guide structure 140 are arranged in the arched gap, and the third shell plate 113 is stacked on the second shell plate 112; the receiving cavity 120 is an arcuate cavity structure formed between the first shell plate 111 and the third shell plate 113 through an arcuate gap of the second shell plate 112.

The fluid introducing structure 130 and the flow guiding structure 140 are both disposed in the arcuate gap of the first shell plate 111, and in the process that the fluid flows into the arcuate gap from the fluid introducing structure 130 and flows through the flow guiding structure 140, in order to prevent the fluid from overflowing, a closed arcuate cavity structure, namely the accommodating cavity 120, is formed between the arcuate gap and the third shell plate 113, so that the fluid can stably perform directional flow when circulating at a high flow rate in the accommodating cavity 120.

In some embodiments of the present disclosure, as shown in fig. 2, the casing 110 further includes a fourth shell plate 114, the fourth shell plate 114 has an arc-shaped notch, the arc-shaped notch of the fourth shell plate 114 corresponds to the arc-shaped notch of the second shell plate 112, and the fourth shell plate 114 is stacked between the third shell plate 113 and the second shell plate 112.

The fourth shell plate 114 is provided with a notch corresponding to the arch notch of the second shell plate 112, so that the thickness of the closed accommodating cavity 120 formed between the arch notch and the third shell plate 113 is increased, the fluid accommodating capacity is increased, the flow in the accommodating cavity 120 is increased, and the cleaning efficiency of the diversion nozzle 100 is improved.

In some embodiments of the present disclosure, the lowest point of flow directing structure 140 is higher than the highest point of fluid introduction structure 130.

When fluid flows from the fluid introducing structure 130, as shown in fig. 1, the lowest point of each flow guide strip 141 is disposed above the fluid introducing structure 130, so that the fluid can completely flow into the flow guide channel between each flow guide strip 141, and the distribution uniformity of the sprayed fluid can be further improved.

In some embodiments of the present disclosure, as shown in fig. 1, the fluid introduction structure 130 includes a water inlet 132 and an air inlet 131.

The fluid may be any substance having fluidity, such as liquid, gas, or a mixed fluid composed of liquid and gas, and the mixed fluid for cleaning includes liquid for cleaning and high-pressure gas for powering the liquid to be ejected from the fluid outlet 110-b.

The liquid flows into the accommodating chamber 120 through the water inlet 132, and the high-pressure gas flows into the accommodating chamber 120 through the gas inlet 131. As shown in fig. 1, the liquid and the high pressure gas are respectively introduced into the accommodating chamber 120 through different passages by providing a water inlet 132 and a gas inlet 131.

In some embodiments of the present disclosure, the inlet 131 is located at a center point of the fluid inlet 110-a of the receiving chamber 120.

Because the air inlet 131 continuously flows high-pressure air, the liquid in the accommodating cavity 120 is driven to flow to the fluid leading-out end 110-b, the air inlet 131 is arranged at the central point of the fluid leading-in end 110-a of the accommodating cavity 120, the high-pressure air wraps the liquid and diffuses to the two sides of the air inlet 131 to the same extent, and mixed fluid sprayed from the fluid leading-out end 110-b is more uniform.

As shown in fig. 1, the accommodating chamber 120 is an arch-shaped chamber structure, the air inlet 131 is disposed at a central point of the arch-shaped chamber structure and is the lowest point of the accommodating chamber 120, and the high-pressure air flowing from the lowest point of the accommodating chamber 120 through the air inlet 131 can maximally entrain the liquid flowing from the water inlet 132 in the accommodating chamber 120, so that the flow rate of the mixed fluid sprayed from the fluid outlet 110-b is maximized, so as to achieve the best cleaning effect when cleaning with the mixed fluid.

In some embodiments of the present disclosure, one end of the plurality of guide bars 141 is collectively directed toward the air inlet 131.

In the process that the mixed fluid flows from the fluid introducing structure 130 to the fluid outlet end 110-b, the mixed fluid is gradually dispersed from an aggregation state, the mixed fluid in the aggregation state has higher kinetic energy than the mixed fluid in the dispersion state, and the stage of flowing out from the fluid introducing structure 130 is the stage where the mixed fluid is most concentrated, so that, as shown in fig. 1, one end of each of the seven flow guide strips 141 is totally and intensively directed to the air inlet 131, so that the mixed fluid can enter the flow guide channel in the aggregation state, the mixed fluid is ensured to keep the highest kinetic energy when entering the flow guide structure 140, and the mixed fluid has larger impact force.

In some embodiments of the present disclosure, the other end of the plurality of guide strips 141 is perpendicular to the edge of the fluid outlet end 110-b of the receiving chamber 120.

The other end of the guide strip 141 is perpendicular to the edge of the fluid outlet end 110-b of the receiving chamber 120 to limit the angle of fluid ejection.

As shown in fig. 1, when the other ends of the seven guide strips 141 are perpendicular to the edge of the fluid outlet 110-b of the receiving chamber 120, the guide channels defined between the guide strips 141 are also perpendicular to the edge of the fluid outlet 110-b of the receiving chamber 120, so that the mixed fluid is guided by the guide channels from the air inlets 131 to the fluid outlet 110-b and is ejected perpendicularly from the fluid outlet 110-b.

In some embodiments of the present disclosure, the flow guide strips 141 are a plurality of strip-shaped protruding structures disposed on the second shell plate 112.

As shown in fig. 1, seven protruding structures are arranged in the accommodating cavity 120 side by side, a groove, i.e. a flow guide channel, is formed on a plane between every two protruding structures relative to the protruding structures, and when the mixed fluid flows through the flow guide channel, the protruding structures on both sides play a role of enclosure, thereby achieving a flow guide effect.

In some embodiments of the present disclosure, the interval between the plurality of guide strips 141 ranges from 3 to 20mm.

According to different requirements, the interval between the guide strips 141 can be flexibly adjusted to adapt to the guide nozzles 100 of different models. For example, the number of the guide strips 141 and the length of the guide nozzle 100 are used as the basis, and the intervals between the guide strips 141 are set by itself according to the flow field simulation.

As shown in fig. 5, the interval between the flow guide strips 141 is maintained dense at the middle and the two sides are evacuated according to the engineering simulation result, so that the mixed fluid in the accommodating cavity 120 can be smoother, and the sprayed mixed fluid is more uniform. As shown in fig. 1, taking seven flow guide strips as an example, one of the flow guide strips is disposed in the center of the accommodating cavity 120, and the other six flow guide strips 141 are symmetric in pairs and distributed on the left and right sides of the central flow guide strip 141; assuming that the distance between the guide strips 141 located at the center of the accommodating cavity 120 and the leftmost side of the accommodating cavity 120 is 60mm, the intervals between the four guide strips 141 on any one side are respectively 6mm, 9mm and 15mm from the middle to both sides.

In some embodiments of the present disclosure, the plurality of bar-shaped protrusion structures are arranged along the middle of the accommodating cavity 120 to two sides; the curvature of the strip-shaped convex structure is increased from the middle of the accommodating cavity 120 to the two sides of the accommodating cavity 120.

As shown in fig. 4, the mixed fluid ejected from the diversion nozzle 100 without the diversion structure 140 has a large V-shaped blank area in the middle, and the mixed fluid ejected from both sides needs to be moved toward the middle to fill the blank area; therefore, as shown in fig. 1, a guide strip 141 for changing the direction of the mixed fluid by its curvature and drawing the mixed fluid toward the center is designed in the receiving chamber 120.

According to the motion trail of the object, the farther the departure point of the mixed fluid is from the center of the diversion nozzle 100, the larger the curvature of the diversion strip 141 which is needed to change the ejection direction of the mixed fluid is, so that the mixed fluid with different departure points can be ejected from the diversion nozzle 100 at almost the same angle, and a large blank area existing in the middle of the mixed fluid is fully filled up when the diversion structure 140 is not arranged, so that the ejected mixed fluid is more uniform.

In some embodiments of the present disclosure, the curve has a radius of curvature in the range of 2 to 20mm.

According to different requirements, the curvature radius of the diversion strips 141 can be flexibly adjusted to adapt to diversion nozzles 100 of different models. For example, the curvature radius of the flow guide strips 141 is set by itself according to the flow field simulation condition based on the number of the flow guide strips 141, the length of the flow guide nozzle 100, or the required ejection density of the mixed fluid in different scenes.

Embodiments of the second aspect of the present disclosure provide a cleaning module 10 comprising a base 200, a diversion nozzle 100 of any of the above embodiments, and a fluid valve 300; one side of the base 200 is used for fixing the object 20 to be cleaned; the guide nozzle 100 is fixed on the other side of the base 200; the fluid valve 300 is connected to the bottom of the guide nozzle 100 and communicates with the fluid introduction structure 130.

As shown in fig. 2 and 3, the base 200 is used to stably place the cleaning module 10 on the surface of the device to be cleaned, and prevent the high-intensity mixed fluid sprayed from the diversion nozzle 100 from generating a reaction force on the diversion nozzle 100, so that the diversion nozzle 100 is displaced during the cleaning process.

As shown in fig. 3, the fluid valve 300 is connected to the bottom of the pilot nozzle 100 and communicates with the fluid introduction structure 130, and the flow rate of the fluid flowing into the fluid introduction structure 130 is controlled by adjusting the opening degree of the fluid valve 300.

In some embodiments of the present disclosure, the fluid valve 300 comprises a water inlet valve 302 and an air inlet valve 301, the water inlet valve 302 is in communication with the water inlet 132, and the air inlet valve 301 is in communication with the air inlet 131.

As shown in fig. 3, a customer may use the option of simultaneously closing the air intake valve 301 and the water inlet valve 302, opening only the air intake valve 301 or the water inlet valve 302, and simultaneously opening the air intake valve 301 and the water inlet valve 302, as required, and may further control the opening degrees of the air intake valve 301 and the water inlet valve 302, thereby flexibly adjusting the flow rate of the liquid and the flow rate of the high-pressure gas.

In some embodiments of the present disclosure, the base 200 secures the fluidic nozzle 100 to the base 200 by a number of through bolts 201.

As shown in fig. 2, the base 200 fixes the nozzle 100 to the base 200 by two through bolts 201, and the bolts 201 are detachable connectors, so that the nozzle 100 or the base 200 can be conveniently replaced when any device is broken or damaged.

Referring to fig. 3, a third aspect of the present disclosure provides a cylindrical radar cleaning device, including a plurality of cleaning modules 10 in any of the above embodiments, where the plurality of cleaning modules 10 are distributed on a circle with a center point of a radar to be cleaned as a center and a radius of a bottom surface of the radar to be cleaned as a radius.

As shown in fig. 3, the plurality of cleaning modules 10 are distributed on a circle which takes a center point of the radar to be cleaned as a circle center and takes a radius of a bottom surface of the radar to be cleaned as a radius, each cleaning module 10 includes a diversion nozzle 100, and a diversion structure 140 arranged in the diversion nozzle 100 diverts the cleaning mixed fluid along the diversion structure 140, so that the mixed fluid is uniformly ejected through a fluid outlet end, thereby solving the problem that the mixed fluid ejected on the surface of the radar by a cleaning device is not uniformly distributed because the diversion structure 140 is not arranged in the related art, and realizing the comprehensive cleaning of the laser radar.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only for the preferred embodiment of the present disclosure, and is not intended to limit the scope of the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure are included in the scope of protection of the present disclosure.

Claims

1. A flow directing nozzle, comprising: the device comprises a shell, an accommodating cavity, a fluid leading-in structure and a flow guide structure;

the shell is hollow to form the accommodating cavity;

the fluid leading-in structure penetrates through the fluid leading-in end of the shell to be communicated with the accommodating cavity;

the flow guide structure is arranged on one side, close to the fluid outlet end of the shell, in the accommodating cavity; the flow guide structure comprises a plurality of flow guide strips, and a flow guide channel is formed between two adjacent flow guide strips.

2. The flow directing nozzle of claim 1, wherein the housing comprises a first shell plate, a second shell plate, and a third shell plate, the first, second, and third shell plates being stacked to form the housing, the second shell plate being disposed between the first shell plate and the third shell plate:

the fluid leading-in structure and the flow guide structure are both arranged on the first shell plate;

the second shell plate is provided with an arched gap, the second shell plate is stacked on the first shell plate, the fluid leading-in structure and the fluid guide structure are arranged in the arched gap, and the third shell plate is stacked on the second shell plate;

the accommodating cavity is an arched cavity structure formed between the first shell plate and the third shell plate through an arched notch of the second shell plate.

3. The flow directing nozzle of claim 2, wherein the housing further comprises a fourth shell, the fourth shell having an arcuate cutout formed therein, the arcuate cutout of the fourth shell corresponding to the arcuate cutout of the second shell, the fourth shell stacked between the third shell and the second shell.

4. The flow directing nozzle of claim 1, wherein a lowest point of the flow directing structure is higher than a highest point of the fluid introduction structure.

5. The flow directing nozzle of claim 1, wherein the fluid introduction structure comprises a water inlet and an air inlet.

6. Flow directing nozzle according to claim 5, wherein the air inlet is at a central point of the receiving chamber fluid introduction end.

7. The flow directing nozzle of claim 6, wherein one end of the plurality of flow directing strips is centrally directed toward the air inlet, and the other end of the plurality of flow directing strips is perpendicular to an edge of the fluid outlet end of the receiving chamber.

8. The flow directing nozzle of claim 2, wherein the flow directing bar is a plurality of bar-shaped raised structures disposed on the first skin.

9. The flow directing nozzle of claim 8, wherein the plurality of flow directing bars are spaced apart by a distance in the range of 3 to 20mm.

10. The flow directing nozzle of claim 9, wherein the plurality of strip-shaped raised structures are arranged along the middle of the accommodating cavity towards two sides; the curvature of the strip-shaped protruding structure is larger and larger from the middle of the accommodating cavity to the two sides of the accommodating cavity.

11. The flow directing nozzle of claim 10, wherein the radius of curvature of the raised strip structure is in the range of 2 mm to 20mm.

12. A cleaning module, comprising: a base, a flow directing nozzle as claimed in any one of claims 1 to 11, a fluid valve;

one side of the base is used for fixing an object to be cleaned;

the flow guide nozzle is fixed on the other side of the base;

the flow guide nozzle comprises a fluid introduction structure, and the fluid introduction structure comprises a water inlet and an air inlet;

the fluid valve is connected to the bottom of the diversion nozzle and communicated with the fluid introducing structure.

13. The purge module of claim 12, wherein the fluid valve comprises a water inlet valve in communication with the water inlet and an air inlet valve in communication with the air inlet.

14. The cleaning module of claim 12, wherein the base secures the deflector nozzle to the base by a plurality of through bolts.

15. A cylindrical radar cleaning device, comprising a cleaning module according to any one of claims 12 to 14, wherein a plurality of the cleaning modules are distributed on a circle having a center point of a radar to be cleaned and a radius of a bottom surface of the radar to be cleaned.