CN207126700U - nozzle and injector - Google Patents

Abstract

The utility model provides a nozzle and an injector, wherein the nozzle comprises a first nozzle main body, and a first throttling guide hole and a first straight hole, which are sequentially communicated along the axis of the first nozzle main body and whose openings gradually decrease, are formed. It includes: the second nozzle main body, along the axis of the second nozzle main body, forming a diffuser cavity with an inlet and an outlet respectively on opposite sides, and a spray hole with an opening gradually increasing in communication with the outlet, the areas of the inlet and the outlet are smaller than the diffuser Any cross-sectional area of the pressure chamber perpendicular to the axis of the second nozzle body, wherein the first nozzle body is fixedly connected to the second nozzle body, and the first straight hole communicates with the inlet to form a first flow path. Through the technical scheme of the utility model, the gas phase components generated after being throttled by the first nozzle body can form a vortex in the diffuser chamber, so as to encourage the liquid phase components to spray out the nozzle at a higher flow rate, thereby improving the suction of the nozzle. shooting ability.

Description

Nozzles and Injectors

technical field

The utility model relates to the technical field of nozzles, in particular to a nozzle and an injector.

Background technique

At present, the injection holes inside conventional nozzles are linear or conical, and the injection velocity of the fluid ejected through the injection holes is low, and the frequency of replacing the nozzles during use is high, which increases production costs and reduces work efficiency. In the technology, spray holes including stable section, constricted section, throat, diffuser section and straight section are sequentially formed inside the nozzle. Compared with conventional nozzles, although the injection speed has been improved, the desired effect is still not achieved. Related The nozzles in the technology still have the following technical defects:

(1) The liquid phase component of the fluid accounts for a relatively large proportion, resulting in that the injection speed of the fluid flow after passing through the nozzle still needs to be improved, which affects the user experience;

(2) The degree of gasification of the fluid in the injector is low, so that the gas phase components cannot form a vortex in the injection hole, and thus cannot stimulate the liquid phase components to eject out of the nozzle at a higher flow rate.

Utility model content

The utility model aims at at least solving one of the technical problems existing in the prior art or the related art.

Therefore, an object of the present utility model is to provide a nozzle.

Another object of the present utility model is to provide an injector.

In order to achieve the above object, the nozzle according to the embodiment of the first aspect of the present utility model includes a first nozzle body, and a first throttling guide hole and a first straight hole with gradually decreasing openings are sequentially connected along the axis of the first nozzle body. , further comprising: a second nozzle main body, forming a diffuser chamber with an inlet and an outlet respectively on opposite sides along the axis of the second nozzle main body, and a spray hole whose opening communicates with the outlet gradually increases, and the area of the inlet and the outlet is the same Less than any cross-sectional area of the diffuser chamber perpendicular to the axis of the second nozzle body, wherein the first nozzle body is fixedly connected to the second nozzle body, and the first straight hole communicates with the inlet to form a first flow path.

In this technical solution, along the axis of the first nozzle body, the first throttling guide hole and the first straight hole with gradually decreasing openings are sequentially connected, which can throttle the fluid flowing through the first nozzle body. The velocity of the fluid flowing out from the first nozzle body is increased, wherein the fluid flowing out from the first nozzle body is a fluid comprising two components of a gas phase and a liquid phase, by arranging a second nozzle body fixedly connected to the first nozzle body, Along the axis of the second nozzle main body, a diffuser cavity with an inlet and an outlet is formed on opposite sides, and a spray hole with an opening gradually increasing in communication with the outlet of the diffuser cavity is formed. By connecting the inlet of the diffuser cavity with the first nozzle The first straight hole in the main body is connected to form a first flow path, wherein the opening areas on both sides of the diffuser chamber are smaller than any cross-sectional area of the diffuser chamber perpendicular to the axis of the second nozzle body, so that the flow through the first nozzle body is throttled. The resulting gas phase components can form a vortex in the diffuser chamber to encourage the liquid phase components to be ejected out of the nozzle at a higher flow rate, thereby improving the ejection capability of the nozzle.

In addition, the nozzles in the above embodiments provided by the present invention can also have the following additional technical features:

In the above technical solution, preferably, it also includes: a third nozzle body, forming a second throttling guide hole and a second straight hole in sequential communication along the axis of the third nozzle body, the opening of which is gradually reduced, and the third nozzle body and The first nozzle body is fixedly connected, and the second straight hole communicates with the first throttling guide hole to form a second flow path.

In this technical solution, by setting the third nozzle body, the second throttling guide hole and the second straight hole with gradually decreasing openings are sequentially connected along the axis of the third nozzle body, so that the fluid flowing through the third nozzle body can be controlled. Play the effect of throttling, improve the velocity of the fluid flowing out from the third nozzle body, the third nozzle body is fixedly connected with the first nozzle body, the second straight hole communicates with the first throttling guide hole to form the second The flow path is throttling through two-stage constriction, which increases the proportion of the gas phase components. Since the gas phase part passes through the nozzle, it will obtain a higher flow rate than the liquid phase, so the liquid phase components will be carried by more gas phase components. The crushing is in the form of smaller droplets, which makes it easier for the liquid phase components to spray out of the nozzle in the form of atomization, effectively increasing the fluid velocity at the outlet end of the nozzle.

In any of the above technical solutions, preferably, the shape of the diffuser cavity includes: a sphere shape, a cuboid shape and a cube shape.

In this technical solution, by setting the shape of the diffuser cavity as a sphere, the gas phase component generated after throttling can form a stable vortex in the diffuser cavity to encourage the liquid phase component to spray out the nozzle at a higher flow rate. The turbulent flow of the gas-liquid two-phase fluid in the diffuser chamber is prevented to keep it in a stable state, thereby improving the throttling and speed-up effect of the nozzle, wherein the diffuser chamber also includes a rectangular parallelepiped shape and a cube shape.

In any of the above technical solutions, preferably, the inlet area of the diffuser chamber is not larger than the outlet area of the diffuser chamber.

In this technical solution, by setting the inlet area of the diffuser chamber to be smaller than or equal to the outlet area, the swirling effect of the gas phase components in the diffuser chamber is improved, thereby enhancing the ejection ability of the liquid phase fluid.

In any of the above technical solutions, preferably, the axis of the first nozzle body, the axis of the second nozzle body and the axis of the third nozzle body are collinear.

In this technical solution, by making the axis of the first nozzle body, the axis of the second nozzle body and the axis of the third nozzle body collinear, the stability of the second flow path is improved, and the fluid inside it flows stably. On the one hand, unnecessary pressure loss is reduced, and on the other hand, the pressure of the fluid on the nozzle wall is reduced, thereby reducing the strength requirements for materials, reducing production costs, and improving economic benefits.

In any of the above technical solutions, preferably, the first nozzle body, the second nozzle body and the third nozzle body are sealed.

In this technical solution, by sealing the first nozzle body, the second nozzle body and the third nozzle body, the stability of the nozzle structure is improved, the influence of sewage and dust on the nozzle is reduced, and at the same time, the first The connection between the nozzle body, the second nozzle body and the third nozzle body is firm and reliable.

In any of the above technical solutions, preferably, the opening of the first straight hole is equal in size to the inlet of the diffuser chamber; and/or the opening of the second straight hole is equal in size to the opening of the inlet end of the first throttling guide hole.

In this technical solution, by setting the opening of the first straight hole to be equal in size to the inlet of the diffuser cavity; and/or setting the opening of the second straight hole to be equal in size to the opening of the inlet end of the first throttling guide hole, fluid flow is improved The stability of the injection nozzle prevents the injection fluid from being unstable due to frequent changes in the pressure of the fluid inside the nozzle, thereby improving the injection effect.

In any of the above technical solutions, preferably, the connecting flange is provided on the outer wall of the inlet end of the nozzle, and the connecting flange is arranged in a ring with the axis of the nozzle as the central axis.

In this technical solution, a connecting flange is arranged annularly on the outer wall of the inlet end of the nozzle with the axis of the nozzle as the central axis, so that the nozzle is easy to install and can be clamped to the outlet end of the spraying device, which improves convenience.

In any of the above technical solutions, preferably, the nozzle is in the shape of a cone or a cylinder.

In this technical solution, by setting the nozzle in the shape of a cone or a column, the outer surface of the nozzle is neat, which is more in line with the principle of ergonomics. On the one hand, it is convenient to move the nozzle and perform secondary processing on it. The streamlined nozzle design has a groove design on the outer wall of the opposite nozzle, which can prevent dirt from adhering to the groove.

In any of the above technical solutions, preferably, the nozzle has an integrated structure.

In this technical solution, by providing the nozzle with an integral structure, the strength of the nozzle structure can be effectively improved, thereby improving the throttling and speed-up effect of the nozzle.

The injector according to the embodiment of the second aspect of the utility model includes the nozzle described in any one of the technical solutions in the first aspect of the utility model, so the injector has all the beneficial effects of the nozzle described in any one of the above technical solutions , which will not be repeated here.

Additional aspects and advantages of the invention will become apparent in the description which follows, or may be learned by practice of the invention.

Description of drawings

Fig. 1 shows a schematic structural view of a nozzle according to an embodiment of the present invention;

Fig. 2 shows a schematic structural view of a nozzle according to another embodiment of the present invention;

Fig. 3 shows a schematic structural view of a nozzle according to yet another embodiment of the present invention;

Figure 4 shows a bar graph of nozzle exit velocity according to one embodiment of the present invention,

Wherein, the corresponding relationship between reference numerals and component names in Fig. 1 to Fig. 4 is:

10 nozzle, 102 first nozzle body, 104 second nozzle body, 106 connecting flange, 108 third nozzle body, 1022 first throttling guide hole, 1024 first straight hole, 1042 diffuser chamber, 1044 injection hole, 1082 The second throttle guide hole, 1084 second straight hole.

Detailed ways

In order to more clearly understand the above purpose, features and advantages of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, a lot of specific details have been set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways different from those described here, therefore, the protection scope of the utility model is not limited to the following limitations of the specific embodiments disclosed.

The nozzle according to the embodiment of the present utility model will be specifically described below with reference to FIG. 1 to FIG. 4 .

As shown in FIG. 1 , the nozzle 10 according to an embodiment of the present utility model includes a first nozzle body 102 , along the axis of the first nozzle body 102 , a first throttling guide hole 1022 and a first throttling guide hole 1022 with gradually decreasing openings are formed in sequence. The first straight hole 1024 also includes: a second nozzle main body 104, forming a diffuser chamber 1042 with an inlet and an outlet respectively on opposite sides along the axis of the second nozzle main body 104, and a spray nozzle with an opening that communicates with the outlet gradually increases. The area of the hole 1044, the inlet and the outlet are all smaller than any cross-sectional area of the diffusion chamber 1042 perpendicular to the axis of the second nozzle body 104, wherein the first nozzle body 102 is fixedly connected to the second nozzle body 104, and the first straight hole 1024 is connected to the second nozzle body 104. The inlets are connected to form the first flow path.

In this technical solution, the first throttling guide hole 1022 and the first straight hole 1024, which are communicated in sequence along the axis of the first nozzle body 102 and whose openings gradually decrease, can throttle the fluid flowing through the first nozzle body 102. The effect of flow improves the velocity of the fluid flowing out from the first nozzle body 102, wherein the fluid flowing out from the first nozzle body 102 is a fluid comprising two components of gas phase and liquid phase, and is fixed with the first nozzle body 102 by setting The connected second nozzle body 104 forms a diffuser chamber 1042 with an inlet and an outlet respectively on opposite sides along the axis of the second nozzle body 104, and a spray hole 1044 with an opening gradually increasing in communication with the outlet of the diffuser chamber 1042 , by connecting the inlet of the diffuser chamber 1042 with the first straight hole 1024 in the first nozzle body 102, a first flow path is formed, wherein the opening area on both sides of the diffuser chamber 1042 is smaller than that of the diffuser chamber 1042 perpendicular to the second nozzle Any cross-sectional area of the axis of the main body 104 enables the gaseous components generated after being throttled by the first nozzle main body 102 to form a vortex in the diffuser chamber 1042, so as to encourage the liquid phase components to eject out of the nozzle at a higher flow rate, thereby improving The ejection ability of the nozzle.

Preferably, the outlet end of the nozzle is also provided with a third straight hole, which is arranged on the second nozzle body 104 in cooperation with the outlet end of the injection hole 1044, the axis of the third straight hole is collinear with the axis of the second nozzle body 104, and the third The opening of the straight hole is equal in size to the opening of the outlet end of the injection hole 1044. By setting the third straight hole at the outlet end of the nozzle, the rectification effect of the fluid is improved, and the state of the ejected fluid is more stable.

Preferably, the first nozzle body 102 and the second nozzle body 104 are stably and reliably connected together by welding, and under normal working pressure, the first nozzle body 102 and the second nozzle body 104 will not be separated, reducing the It should be understood that the connection method of the first nozzle body 102 and the second nozzle body 104 is not limited to welding, and they can also be fixedly connected in other ways to form a stable first flow path.

In addition, the nozzle 10 in the above embodiment provided by the present invention can also have the following additional technical features:

As shown in FIG. 2 , in the above technical solution, preferably, it further includes: a third nozzle body 108 , forming sequentially connected second throttle guide holes 1082 with gradually decreasing openings and a second throttle guide hole 108 along the axis of the third nozzle body 108 . Two straight holes 1084, the third nozzle body 108 is fixedly connected with the first nozzle body 102, and the second straight hole 1084 communicates with the first throttling guide hole 1022 to form a second flow path.

In this technical solution, by setting the third nozzle body 108, the second throttling guide hole 1082 and the second straight hole 1084, which are successively communicated with each other along the axis of the third nozzle body 108, are formed to convect the flow through the third nozzle body 108. The fluid in the nozzle body 108 plays a throttling effect, which improves the velocity of the fluid flowing out from the third nozzle body 108, and the third nozzle body 108 is fixedly connected with the first nozzle body 102, and the second straight hole 1084 is connected to the first section. The flow guide hole 1022 communicates to form a second flow path, throttling through two-stage constriction, which increases the proportion of the gas phase components. Since the gas phase part passes through the nozzle, it will obtain a higher flow rate than the liquid phase, so more gas phase components Under the effect of carrying, the liquid phase components will be crushed into smaller droplets, which makes it easier for the liquid phase components to be sprayed out of the nozzle in the form of atomization, effectively increasing the fluid velocity at the outlet end of the nozzle.

Preferably, the third nozzle body 108 and the first nozzle body 102 are stably and reliably connected together by welding, and under normal working pressure, the third nozzle body 108 and the first nozzle body 102 will not be separated, reducing the It should be understood that the connection method between the third nozzle body 108 and the first nozzle body 102 is not limited to welding, and they can also be fixedly connected in other ways to form a stable second flow path.

As shown in FIG. 3 , in any of the above technical solutions, preferably, the shape of the diffuser cavity 1042 includes: a spherical shape, a rectangular parallelepiped shape and a square shape.

In this technical solution, by setting the shape of the diffuser chamber 1042 as a sphere, the gas phase components generated after throttling can form a stable vortex in the diffuser chamber 1042, so as to encourage the liquid phase components to be ejected at a higher flow rate The nozzle prevents the turbulence of the gas-liquid two-phase fluid in the diffuser chamber 1042 and keeps it in a stable state, thereby improving the throttling and speed-up effect of the nozzle, wherein the diffuser chamber 1042 also includes a rectangular parallelepiped shape and a cube shape.

Specifically, the nozzle is suitable for a refrigeration cycle with throttling and phase change. Through the step-by-step contraction and sudden change of the chamber, the refrigerant will first produce a certain proportion of gas phase components during the throttling process. In the diffuser chamber 1042 , the gas phase components will form a vortex to encourage the liquid phase components to eject out of the nozzle at a higher flow rate, thereby improving the ejection capability of the nozzle. 5%, the injection performance is greatly improved, and it has a strong throttling and speed-up effect.

Preferably, a diversion groove may be provided in the diffuser chamber 1042 to enhance the flow effect of the gas phase components and further enhance the driving effect on the liquid phase components.

In any of the above technical solutions, preferably, the inlet area of the diffuser chamber 1042 is not larger than the outlet area of the diffuser chamber 1042 .

In this technical solution, by setting the inlet area of the diffuser chamber 1042 to be smaller than or equal to the outlet area, the swirling effect of the gas phase components in the diffuser chamber 1042 is improved, thereby enhancing the ejection ability of the liquid phase fluid.

In any of the above technical solutions, preferably, the axis of the first nozzle body 102 , the axis of the second nozzle body 104 and the axis of the third nozzle body 108 are collinear.

In this technical solution, by making the axis of the first nozzle body 102, the axis of the second nozzle body 104 and the axis of the third nozzle body 108 collinear, the stability of the second flow path is improved, and the fluid inside it is stabilized. Flow, on the one hand, reduces unnecessary pressure loss, and on the other hand, reduces the pressure of the fluid on the nozzle wall, thereby reducing the strength requirements for materials, reducing production costs, and improving economic benefits.

In any of the above technical solutions, preferably, the first nozzle body 102 , the second nozzle body 104 and the third nozzle body 108 are sealed.

In this technical solution, by sealing the first nozzle body 102, the second nozzle body 104 and the third nozzle body 108, the stability of the nozzle structure is improved, and the influence of sewage and dust on the nozzle is reduced. At the same time, The connections among the first nozzle body 102 , the second nozzle body 104 and the third nozzle body 108 are firm and reliable.

In any of the above technical solutions, preferably, the opening of the first straight hole 1024 is equal in size to the inlet of the diffuser chamber 1042; equal.

In this technical solution, by setting the opening of the first straight hole 1024 to be equal in size to the entrance of the diffuser cavity 1042; The stability of the fluid flow is improved, and the ejected fluid is prevented from being unstable due to frequent changes in the pressure of the fluid inside the nozzle, thereby improving the injection effect.

As shown in Figures 1 to 3, in any of the above technical solutions, preferably, the connecting flange 106 is provided on the outer wall of the inlet end of the nozzle, and the connecting flange 106 is arranged circularly with the axis of the nozzle as the central axis.

In this technical solution, a connecting flange 106 is provided annularly on the outer wall of the inlet end of the nozzle with the axis of the nozzle as the central axis, so that the nozzle is easy to install and can be clipped to the outlet end of the spraying device, which improves convenience.

Preferably, a screw thread can be provided at the connecting flange 106, and the screw thread can be connected with the injection device, which is not only easy to disassemble, but also stable and reliable, which enhances the practicability of the nozzle product. It should be understood that the connection method between the nozzle and the injection device includes Not limited to the above two forms, the nozzle can also be directly welded to the outlet end of the spraying equipment, so that it can be stably and reliably fixed on the spraying equipment.

Preferably, it also includes a sealing ring, which is arranged between the nozzle and the outlet end of the injection device, so as to prevent unnecessary pressure loss caused by leakage.

In any of the above technical solutions, preferably, the nozzle is in the shape of a cone or a cylinder.

In this technical solution, by setting the nozzle in the shape of a cone or a column, the outer surface of the nozzle is neat, which is more in line with the principle of ergonomics. On the one hand, it is convenient to move the nozzle and perform secondary processing on it. The streamlined nozzle design has a groove design on the outer wall of the opposite nozzle, which can prevent dirt from adhering to the groove.

In any of the above technical solutions, preferably, the nozzle has an integrated structure.

In this technical solution, by providing the nozzle with an integral structure, the strength of the nozzle structure can be effectively improved, thereby improving the throttling and speed-up effect of the nozzle.

Among them, the nozzle can be processed in one piece through 3D printing technology.

The injector according to one embodiment of the utility model includes the nozzle 10 described in any one of the above-mentioned technical solutions of the utility model, so the injector has all the beneficial effects of the nozzle 10 described in any of the above-mentioned technical solutions. Let me repeat.

The technical scheme of the utility model has been described in detail above in conjunction with the accompanying drawings. The utility model provides a nozzle and an injector. The fluid flowing through the first nozzle body can be throttling through the first nozzle body, and the self-efficacy is improved. The velocity of the fluid flowing out of the first nozzle body, wherein the fluid flowing out of the first nozzle body is a fluid comprising two components of gas phase and liquid phase, by setting the second nozzle body fixedly connected with the first nozzle body, along the second The axis of the nozzle main body forms a diffuser chamber with an inlet and an outlet respectively on opposite sides, and a spray hole with an opening that communicates with the outlet of the diffuser chamber that gradually increases. By connecting the inlet of the diffuser chamber with the The first straight hole communicates to form the first flow path, wherein the opening areas on both sides of the diffuser cavity are smaller than any cross-sectional area of the diffuser cavity perpendicular to the axis of the second nozzle body, so that the flow generated after throttling through the first nozzle body The gas phase component can form a vortex in the diffuser chamber to encourage the liquid phase component to eject out of the nozzle at a higher flow rate, thereby improving the ejection capability of the nozzle.

In the present utility model, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or two more than one, unless otherwise expressly limited. The terms "installation", "connection", "connection", "fixed" and other terms should be interpreted in a broad sense, for example, "connection" can be fixed connection, detachable connection, or integral connection; "connection" can be directly or indirectly through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the description of the present utility model, it should be understood that the orientations or positional relationships indicated by the terms "up", "down", "left", "right", "front", "rear" etc. are based on those shown in the accompanying drawings. Orientation or positional relationship is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or unit referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, cannot be understood as a reference to the utility model. limits.

In the description of this specification, descriptions of the terms "one embodiment", "some embodiments", "specific embodiments" and the like mean that specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in the present application. Novel at least one embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (11)

1. A nozzle, comprising a first nozzle body, forming successively connected first throttling guide holes and first straight holes with gradually decreasing openings along the axis of the first nozzle body, characterized in that it also includes: The second nozzle main body, along the axis of the second nozzle main body, forms a diffuser chamber with an inlet and an outlet respectively on opposite sides, and a spray hole communicating with the outlet with gradually enlarged openings, the inlet and the outlet The outlet areas are all smaller than any cross-sectional area of the diffuser chamber perpendicular to the axis of the second nozzle body, Wherein, the first nozzle body is fixedly connected to the second nozzle body, and the first straight hole communicates with the inlet to form a first flow path. 2. The nozzle according to claim 1, further comprising: The third nozzle main body forms a second throttling guide hole and a second straight hole which communicate with each other in sequence along the axis of the second nozzle main body, and the third nozzle main body is fixedly connected with the first nozzle main body , the second straight hole communicates with the first throttle guide hole to form a second flow path. 3. The nozzle of claim 1 wherein, The shape of the diffuser cavity includes: a sphere shape, a cuboid shape and a cube shape. 4. The nozzle of claim 1 wherein, The inlet area of the diffuser cavity is not larger than the outlet area of the diffuser cavity. 5. The nozzle of claim 2, wherein: The axis of the first nozzle body, the axis of the second nozzle body and the axis of the third nozzle body are collinear. 6. The nozzle of claim 2, wherein: The first nozzle body, the second nozzle body and the third nozzle body are sealed. 7. The nozzle of claim 2, wherein: The opening of the first straight hole is equal in size to the inlet of the diffuser cavity; and/or The opening of the second straight hole is equal in size to the opening of the inlet end of the first throttling guide hole. 8. The nozzle according to any one of claims 1 to 7, further comprising: The connecting flange is arranged on the outer wall of the inlet end of the nozzle, and the connecting flange is arranged annularly with the axis of the nozzle as the central axis. 9. The nozzle of claim 8, further comprising: The nozzle is in the shape of a cone or a cylinder. 10. The nozzle of claim 8, wherein: The nozzle is an integral structure. 11. An injector, characterized in that it comprises: A nozzle as claimed in any one of claims 1 to 10.