CN212493658U - Air guide sleeve and atomizing machine - Google Patents

Abstract

The utility model provides a kuppe and atomizing machine relates to water conservancy diversion technical field, is equipped with the holding chamber in the kuppe, and the kuppe is equipped with the water conservancy diversion passageway towards the direction in holding chamber, and the both ends of water conservancy diversion passageway communicate the surface of holding chamber and kuppe respectively, and the kuppe is equipped with the water inlet in intercommunication holding chamber, and the water inlet passes through holding chamber and water conservancy diversion passageway intercommunication. The air guide sleeve is installed on the atomizer, a negative pressure cavity is formed between the side wall of the air guide sleeve and the atomizer, and the gushing current generated during operation of an atomizing sheet of the atomizer is sprayed out from the surface of the air guide sleeve through the air guide channel to form negative pressure on the negative pressure cavity, so that external water is driven to enter the negative pressure cavity, and the water flows out from the air guide channel through the surface of the atomizer to form a circulating gushing current. Under the effect of circulation gushing flow, the surface of the atomizing machine is flowed through to the continuous flow of water that newly gets into the negative pressure cavity, takes away the heat of atomizing machine to carry out lasting cooling to the atomizing machine, the atomizing machine heat dissipation is timely, can not start the self-protection and close the power.

Description

Air guide sleeve and atomizing machine

Technical Field

The utility model relates to a water conservancy diversion technical field especially relates to a kuppe and atomizing machine.

Background

With the development of science and technology, the atomizer has been widely used in people's daily life, mainly atomizes the liquid that contacts with it through self atomizing piece, reaches the effect of hazing, and the fog that floats in the air can play the humidification effect. For example, in some large supermarkets, the bottom of the vegetable rack is also provided with an atomizing machine, and the produced mist is dispersed on the vegetables to humidify and preserve the vegetables.

The work is placed in the aquatic to the atomizing machine, and can continuously generate heat at the in-process of work, leads to the inside higher of atomizing machine, and the atomizing machine passes through the surface with heat transfer to the aquatic on every side. Because the water around the atomizer is in quiescent condition, the temperature of water around the atomizer is higher, leads to the heat in the atomizer to distribute slowly, when the atomizer is inside to reach the uniform temperature, the atomizer can automatic start self-protection, closes the power to influence work.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a flow guiding cover and an atomizer for overcoming the defects in the prior art.

The utility model provides a following technical scheme: the utility model provides a kuppe, be provided with the holding chamber in the kuppe, the kuppe orientation the direction in holding chamber is provided with the water conservancy diversion passageway, a tip intercommunication of water conservancy diversion passageway the holding chamber, another tip of water conservancy diversion passageway is followed the surface opening of kuppe stretches out, the water conservancy diversion passageway with holding chamber intercommunication, the kuppe is provided with the intercommunication the water inlet in holding chamber, the water inlet pass through the holding chamber with the water conservancy diversion passageway intercommunication.

Furthermore, the kuppe is box-shaped, the top of kuppe is provided with the orientation the water conservancy diversion passageway in holding chamber, the bottom of kuppe is provided with the water inlet, the water inlet passes through holding chamber intercommunication the water conservancy diversion passageway.

Furthermore, the top of kuppe is provided with a plurality of water conservancy diversion passageways, and is a plurality of the water conservancy diversion passageway is the array and is close to the both sides of kuppe are arranged, and is a plurality of the water conservancy diversion passageway passes through holding chamber intercommunication the water inlet.

Furthermore, ten flow guide channels are arranged on the top of the flow guide cover along the length extension direction of the flow guide cover, five of the flow guide channels are arranged on one side of the top of the flow guide cover at equal intervals, the other five flow guide channels are arranged on the other side, opposite to the top of the flow guide cover, of the flow guide cover at equal intervals, and the ten flow guide channels are arranged in a staggered mode in the length extension direction of the two sides of the top of the flow guide cover.

Furthermore, the aperture of the flow guide channel is sequentially increased from the accommodating cavity to the surface direction of the flow guide cover.

In a second aspect, the utility model also provides an atomizer, including foretell kuppe, the kuppe includes the kuppe, be provided with the holding chamber in the kuppe, the kuppe orientation the direction in holding chamber is provided with the water conservancy diversion passageway, a tip intercommunication of water conservancy diversion passageway the holding chamber, another tip of water conservancy diversion passageway is followed the surface opening of kuppe stretches out, the water conservancy diversion passageway with holding chamber intercommunication, the kuppe is provided with the intercommunication the water inlet in holding chamber, the water inlet passes through the holding chamber with the water conservancy diversion passageway intercommunication.

Further, the atomizer comprises a shell, and the shell is connected with the air guide sleeve through a mounting assembly; when the air guide sleeve is fixed on the shell, the end part of the air guide channel close to the accommodating cavity is close to the atomizing sheet, and a negative pressure cavity is formed between two sides of the shell and two inner side walls of the air guide sleeve; when the atomizing piece works, the atomizing piece sends out the gushing current towards the flow guide channel, and the gushing current drives water outside the shell to pass through the negative pressure cavity and flow out of the surface of the shell through the flow guide channel.

Further, the upper surface of the housing comprises a first surface and a second surface, and the first surface and the second surface are obliquely arranged in opposite directions; and two sides of the upper surface of the air guide sleeve are obliquely arranged corresponding to the first surface and the second surface.

Furthermore, the mounting assembly comprises reinforcing ribs arranged at two end parts of the shell and clamping grooves arranged on the air guide sleeve, and the clamping grooves are matched and connected with the reinforcing ribs to ensure that the air guide sleeve is fixed on the shell.

Further, the diameter of the atomizing plate is equal to the diameter of the end part, close to the accommodating cavity, of the flow guide channel.

The embodiment of the utility model has the following advantage: the air guide sleeve is installed on the atomizer, a negative pressure cavity is formed between the side wall of the air guide sleeve and the atomizer, and the gushing current generated during operation of an atomizing sheet of the atomizer is sprayed out from the surface of the air guide sleeve through the air guide channel to form negative pressure on the negative pressure cavity, so that external water is driven to enter the negative pressure cavity, and the water flows out from the air guide channel through the surface of the atomizer to form a circulating gushing current. Under the effect of circulation gushing flow, the surface of the atomizing machine is flowed through to the continuous flow of water that newly gets into the negative pressure cavity, takes away the heat of atomizing machine to carry out lasting cooling to the atomizing machine, the atomizing machine heat dissipation is timely, can not start the self-protection and close the power.

In order to make the aforementioned and other objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 illustrates a schematic view of a pod in one of its views;

FIG. 2 illustrates a structural schematic view of another perspective of a pod;

FIG. 3 shows a schematic view of a pod when mounted on an atomizer;

FIG. 4 shows a schematic view of a flow guide sleeve and an atomizer when mounted;

fig. 5 shows a flow diagram of a gush generated by an atomizing plate of an atomizer.

Description of the main element symbols:

1-a shell; 2-atomizing tablets; 3-a first surface; 4-a second surface; 5-connecting plates; 6-screw holes; 7-a sensor; 8-power indicator light; 9-a power line; 10-a first reinforcing rib; 11-a second reinforcing rib; 12-a third reinforcing rib; 13-a fourth reinforcing rib;

51-a pod; 52-a flow guide channel; 53-a through hole; 54-lamp hole; 55-power line extension hole; 56-first card slot; 57-a second card slot; 58-a third card slot; 69-fourth card slot.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example 1

As shown in fig. 1, the present embodiment provides a pod for use in an atomizer. The air guide sleeve 51 is arranged on the atomizer to wrap the atomizer; the pod 51 is provided with a receiving cavity that is larger than the volume of the atomizer, so that a gap remains between the atomizer and the inner side wall of the pod 51, through which a negative pressure cavity is formed. The atomizer is placed and is worked in water, is provided with the circuit board in the atomizer, and the circuit board orders about 2 work of atomizing piece with 2 circuit connection of atomizing piece that the atomizer surface set up. During the working process of the atomizing sheet 2, water contacting with the atomizing sheet is atomized to form a surge, and the direction of the surge flow is a direction far away from the atomizing sheet 2.

When the air guide sleeve 51 is fixed on the atomizer, the air guide channel 52 formed on the air guide sleeve 51 corresponds to the atomizing sheet 2, the inrush current generated by the atomizing sheet 2 is sprayed out of the surface of the air guide sleeve 51 through the air guide channel 52, and the negative pressure cavity is communicated with the air guide channel 52 and the outside of the air guide sleeve 51; through the effect of the inrush current, the negative pressure cavity forms a negative pressure, and the negative pressure cavity drives water outside the air guide sleeve 51 to enter the negative pressure cavity and flow out of the surface of the air guide sleeve 51 through the air guide channel 52, so that a circulating inrush current is formed. Because when the outside water of kuppe 51 was through the negative pressure cavity, with the surface contact of atomizer, take away the atomizer production heat to carry out the cooling that lasts to the atomizer, the atomizer heat dissipation is timely, can not start the self-protection and close the power.

The entire shape of the pod 51 may be a box shape, the bottom of the pod 51 is open, and the receiving cavity is communicated with the outside through the bottom of the pod 51. The air guide sleeve 51 is provided with air guide channels 52 towards the direction of the accommodating cavity, and the number of the air guide channels 52 is consistent with that of the atomizing sheets 2 arranged on the atomizer. The flow guide channel 52 is used for limiting the inrush current generated by the atomizing sheet 2 and is also used for communicating with the negative pressure cavity, so that water in the negative pressure cavity flows out through the flow guide channel 52, and the heat on the surface of the atomizer is taken out.

In some possible embodiments, a plurality of flow guide channels 52 may be disposed on the top of the air guide sleeve 51, the plurality of flow guide channels 52 may be arranged in an array and close to two sides of the air guide sleeve 51, and the plurality of flow guide channels 52 simultaneously communicate with the accommodating cavity. The diversion channel 52 can also be arranged close to two side walls of the diversion cover 51, and after the gushing current in the containing cavity is sprayed out from the surface of the diversion cover 51 and is closer to the side wall of the diversion cover, the water near the side wall of the diversion cover 51 can be driven to enter the containing cavity more quickly, so that the atomizer can be cooled more quickly.

Further, the pod 51 may have ten flow channels 52 at the top along its length. In order to avoid as much as possible the influence of the inrush current formed by each flow guide passage 52. Five of the guide channels 52 are arranged on one side of the top of the guide cover 51 at equal intervals, and the other five guide channels 52 are arranged on the other side of the top of the guide cover 51 opposite to each other at equal intervals. Ten diversion channels 52 generate ten inrush currents in total, and the ten inrush currents are arranged at equal intervals. Each flow path of the surge flows sequentially through the negative pressure cavity, the atomizing plate 2, the flow guide channel 52 and the surface of the flow guide cover 51, so that the distance between the adjacent flow guide channels cannot be too small, adjacent surge flows are prevented from being mixed together, the speed of the surge flows sprayed out of the surface of the flow guide cover 51 is reduced, the negative pressure of the negative pressure cavity is reduced, the speed of water flowing into the negative pressure cavity is low, the speed of the surge flows through the atomizer is low, and the heat dissipation of the atomizer is low. The diversion channels 52 arranged on the two sides of the top of the diversion cover 51 are arranged in a staggered mode in the length extension direction of the diversion cover, so that the gushing current sprayed out of the surface of the diversion cover 51 cannot be located on the same vertical plane, and cross influence is avoided.

In some possible embodiments, the aperture of the diversion channel 52 may be configured to gradually increase from the receiving cavity to the surface of the diversion cover 51. The aperture of the end of the diversion channel 52 close to the receiving cavity is smallest, and the aperture of the end far away from the receiving cavity, namely the aperture of the surface of the diversion cover 51, is largest. The gushing current that atomizing piece 2 produced flows out to the biggest hole by the minimum hole gradually, and is big to the negative pressure that the negative pressure cavity produced, and the rivers velocity of flow on atomizer surface increases, and the heat that the atomizer produced is taken away from the atomizer surface that can be faster, makes the faster heat dissipation of atomizer.

The material of the air guide sleeve 51 is various, and the air guide sleeve 51 of the present embodiment may be made of plastic. The plastic air guide sleeve 51 is light in weight and low in manufacturing cost; more importantly, the guide passage 52 on the guide cover 51 is convenient to open the mold and low in processing cost.

Example 2

As shown in fig. 2, the utility model also provides an atomizer, including foretell kuppe 51, kuppe 51 is fixed on the atomizer through the installation component, and the gushing current that the atomizing piece 2 that sets up on the atomizer produced passes through kuppe 51, takes out the heat that the atomizer produced, cools down to the atomizer.

Further, the atomizer includes casing 1, and the upper surface of casing 1 is provided with the atomizing piece 2 that corresponds with water conservancy diversion passageway 52 position, and when kuppe 51 was fixed on casing 1, the tip that water conservancy diversion passageway 52 was close to the holding chamber was close to atomizing piece 2. The distance between the atomizing plate 2 and the flow guide channel 52 cannot be too small, otherwise, water which can affect the negative pressure cavity enters the flow guide channel 52, the negative pressure formed on the negative pressure cavity is small, the inrush flow velocity flowing through the surface of the atomizer is slow, and the heat dissipation of the atomizer is slow. The distance between the atomizing plate 2 and the flow guide channel 52 cannot be too large, so that the phenomenon that the most of the inrush current generated by the atomizing plate 2 flows into the negative pressure cavity and only a small part of the inrush current flows into the flow guide channel 52 and the negative pressure formed by the negative pressure cavity is not large enough, which causes the low inrush current flowing through the surface of the atomizer and slow heat dissipation of the atomizer is avoided.

The upper surface of the housing 1 may include a first surface 3 and a second surface 4, the first surface 3 and the second surface 4 are obliquely disposed in opposite directions, and the first surface 3 and the second surface 4 are each provided with five atomizing plates 2 and are arranged at equal intervals in the length extension direction of the housing 1. The gushing flow generated by the atomizing plates 2 on the two sides of the shell 1 is sprayed in the opposite direction, so that the gushing flow generated on the two sides of the shell 1 is prevented from influencing each other, the negative pressure of the negative pressure cavity is reduced, and the heat dissipation speed of the atomizer is low. Two sides of the upper surface of the air guide sleeve 51 are obliquely arranged corresponding to the first surface 3 and the second surface 4 and are parallel to each other. When the air guide sleeve 51 is fixed on the housing 1, the central axes of the atomizing plates 2 and the central axes of the corresponding air guide passages 52 are located on the same straight line, and the straight line forms an inclination angle of 10-20 ° with the horizontal plane.

In some possible embodiments, the mounting assembly may include reinforcing ribs disposed at two end portions of the housing 1 and a locking groove disposed on the air guide sleeve 51, the locking groove is connected with the reinforcing ribs in a matching manner, and the width of the locking groove is equal to or slightly smaller than the width of the reinforcing ribs, so that the air guide sleeve 51 can be stably mounted on the atomizer. The atomizing sheet 2 has a reverse acting force on the atomizer in the process of generating the inrush current; in order to avoid the atomizer to rock, can still be provided with connecting plate 5 in the bottom of casing 1, seted up screw hole 6 on connecting plate 5, can twist the screw through screw hole 6 and install the atomizer in fixed position.

In some possible embodiments, the housing 1 may be provided with a first rib 10, a second rib 11, a third rib 12, and a fourth rib 13 at two ends of the longitudinal direction, and two adjacent right-angle sides of the first rib 10, the second rib 11, the third rib 12, and the fourth rib 13 are respectively connected to the side wall of the housing 1 and the connecting plate 5, so as to reinforce the connecting plate 5.

The pod 51 may be provided with a first engaging groove 56, a second engaging groove 57, a third engaging groove 58, and a fourth engaging groove 59 at both ends in the longitudinal extending direction thereof, respectively. In the process of installing the air guide sleeve 51, the first clamping groove 56 is clamped into the first reinforcing rib 10, the second clamping groove 57 is clamped into the second reinforcing rib 11, the third clamping groove 58 is clamped into the third reinforcing rib 12, and the fourth clamping groove 59 is clamped into the fourth reinforcing rib 13, so that the connection between the air guide sleeve 51 and the shell 1 is completed. If the air guide sleeve 51 needs to be disassembled, the first clamping groove 56, the second clamping groove 57, the third clamping groove 58 and the fourth clamping groove 59 are respectively pulled out of the first reinforcing rib 10, the second reinforcing rib 11, the third reinforcing rib 12 and the fourth reinforcing rib 13, so that the air guide sleeve is convenient to disassemble and assemble.

In order to ensure that the gushing generated from the atomizing plate 2 can flow into the flow guide channel 52 as much as possible, the diameter of the atomizing plate 2 can be set to be equal to the diameter of the end part of the flow guide channel 52 close to the accommodating cavity, and the diameter of the atomizing plate 2 can also be set to be smaller than the diameter of the end part of the flow guide channel 52 close to the accommodating cavity.

The heat that the atomizer produced mainly concentrates on the length extending direction of atomizer, dispels the heat to the side of the length extending direction of atomizer, is the shortcut that makes the quick heat dissipation of atomizer. Both ends of the atomizer in the width extending direction may be attached to the airflow guide 51 without leaving a gap. A gap is left only between the side surface of the atomizer in the length extension direction and the air guide sleeve 51, and the gap forms a negative pressure cavity, so that the volume of the negative pressure cavity can be reduced as much as possible. Because the negative pressure of the formation of the negative pressure cavity caused by the inrush current is fixed and unchanged, the smaller the volume of the negative pressure cavity is, the larger the adsorption force of the diversion channel 52 on the negative pressure cavity is, the larger the flow velocity of the water flow of the negative pressure cavity passing through the side surface of the atomizer is, the heat generated on the side surface of the atomizer can be taken away more quickly, and the heat dissipation of the atomizer is fast.

Still be provided with inductor 7 on the atomizer, inductor 7 is used for the liquid level more than sensing atomizing piece 2, avoids the liquid level more than atomizing piece 2 to hang down excessively, leads to atomizing piece 2 to appear dry combustion method and damage the atomizer. In order to enable the air guide sleeve 51 to be matched with the atomizer in installation, the through hole 53 is formed in the position, corresponding to the inductor 7, of the air guide sleeve 51, when the air guide sleeve 51 is installed, the through hole 53 is inserted into the inductor 7 in the corresponding position, and therefore the temperature of the atomizer can be reduced while the original function of the atomizer is not affected.

The atomizer is further provided with a power line 9, in order to enable the power line 9 to conveniently extend out and be connected with an external power supply, the air guide sleeve 51 is provided with a power line extending hole 55, and when the air guide sleeve 51 is fixed on the atomizer, the power line 9 can extend out of the power line extending hole 55.

Still be provided with power indicator 8 on the atomizing machine, power indicator 8 is used for showing the operating condition of atomizing machine, and the green light is shown in normal work, and the fault condition shows the red light, extinguishes during the outage. The kuppe 51 of this embodiment is non-transparent, in order to avoid influencing the use of power indicator 8, sets up lamp hole 54 with the position that corresponds with power indicator 8 on the kuppe 51, is convenient for install the back on the atomizing machine when kuppe 51, and power indicator 8 can expose from lamp hole 54, conveniently judges the operating condition of atomizing machine through looking over power indicator 8.

In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above examples merely represent some embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (10)

1. The air guide sleeve is characterized in that a containing cavity is formed in the air guide sleeve, an air guide channel is arranged in the direction of the air guide sleeve towards the containing cavity, two end portions of the air guide channel are respectively communicated with the containing cavity and the surface of the air guide sleeve, a water inlet communicated with the containing cavity is formed in the air guide sleeve, and the water inlet is communicated with the air guide channel through the containing cavity.

2. The air guide sleeve as claimed in claim 1, wherein the air guide sleeve is box-shaped, a guide channel facing the accommodating cavity is arranged at the top of the air guide sleeve, and the water inlet is arranged at the bottom of the air guide sleeve.

3. The air guide sleeve as claimed in claim 2, wherein a plurality of air guide channels are arranged at the top of the air guide sleeve, the air guide channels are arranged in an array and close to two sides of the air guide sleeve, and the air guide channels are communicated with the water inlet through the accommodating cavity.

4. The pod of claim 3, wherein the top of the pod is provided with ten flow channels along the length extension thereof, wherein five of the flow channels are equally spaced on one side of the pod top, and wherein five of the flow channels are equally spaced on the opposite side of the pod top, and wherein the ten flow channels are staggered along the length extension on both sides of the pod top.

5. The air guide sleeve as claimed in any one of claims 1 to 4, wherein the aperture of the air guide channel increases from the accommodating cavity to the surface direction of the air guide sleeve.

6. An atomizer, characterized in that, includes the kuppe of any of claims 1-5, the kuppe includes the kuppe, be provided with the holding chamber in the kuppe, the kuppe is provided with the water conservancy diversion passageway towards the direction of holding chamber, the one end of water conservancy diversion passageway communicates the holding chamber, another end of water conservancy diversion passageway stretches out from the surface opening of kuppe, the water conservancy diversion passageway with the holding chamber communicates, the kuppe is provided with the water inlet that communicates the holding chamber, the water inlet passes through the holding chamber with the water conservancy diversion passageway communicates.

7. The nebulizer of claim 6, comprising a housing connected to the pod by a mounting assembly; when the air guide sleeve is fixed on the shell, the end part of the air guide channel close to the accommodating cavity is close to the atomizing sheet, and a negative pressure cavity is formed between two sides of the shell and two inner side walls of the air guide sleeve; when the atomizing piece works, the atomizing piece sends out the gushing current towards the flow guide channel, and the gushing current drives water outside the shell to pass through the negative pressure cavity and flow out of the surface of the shell through the flow guide channel.

8. The atomizing machine of claim 7, wherein the upper surface of the housing includes a first surface and a second surface, the first surface and the second surface being disposed obliquely in opposite directions; and two sides of the upper surface of the air guide sleeve are obliquely arranged corresponding to the first surface and the second surface.

9. The atomizing machine of claim 7, wherein the mounting assembly includes reinforcing ribs disposed at two ends of the housing and a locking groove disposed on the pod, and the locking groove is engaged with the reinforcing ribs to fix the pod to the housing.

10. The atomizer of claim 7, wherein the diameter of said atomizing plate is equal to the diameter of the end of said flow-directing passage adjacent to said receiving chamber.

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