Double-fluid atomizing nozzle

Abstract

The invention relates to a double-fluid atomizing nozzle which comprises a shell, an accommodating cavity is formed in the shell, and an air inlet and a connecting port which are communicated with the accommodating cavity are formed in the two ends of the shell respectively; the flow dividing deflector is arranged in the containing cavity and comprises a flow dividing part and a deflection part, the flow dividing part is connected to the side wall of the containing cavity and provided with a flow dividing channel, the deflection part is connected to the side, away from the air inlet, of the flow dividing part, an air passing gap is defined by the deflection part and the side wall of the containing cavity, and the air passing gap communicates with the connecting port and the air inlet; the resonator is connected with the shell, and a liquid inlet hole and a mounting hole are formed in the resonator; the liquid outlet spray pipe is connected with the resonator through the mounting hole, one end of the liquid outlet spray pipe is communicated with the liquid inlet hole and the connector, and a liquid outlet is formed in the other end of the liquid outlet spray pipe. The integration degree of the shunting deflector and the shell can be improved, the space occupied by the double-fluid atomizing nozzle is reduced, the appearance size is reduced, the weight is reduced, and the double-fluid atomizing nozzle can be conveniently installed in a place with the relatively narrow space size.

Description

Technical Field

[0001] The present application relates to the technical field of nozzles, and in particular to a dual-fluid atomizing nozzle. Background Art

[0002] With the development of the energy storage field, fire prevention and treatment of energy storage battery boxes has become increasingly important. Atomizing nozzles are often installed on the outer shell of energy storage battery boxes and are connected to fire suppression devices through liquid and gas pipes. When the battery in the battery box has thermal runaway or causes a fire, the fire suppression device activates the gas transported by the gas pipe to generate ultrasonic waves at the atomizing nozzle, and the fire extinguishing medium transported by the liquid pipe is instantly atomized at the atomizing nozzle and sprayed into the battery box under the action of the airflow to extinguish or suppress the fire.

[0003] In the related art, the atomizer nozzle needs to be installed on the outside of the battery box. However, when the battery box is installed in a storage cabin (container) or other places, the atomizer nozzle will take up more space due to the limited space size, affecting the installation layout of the battery box. In addition, the weight of the atomizer nozzle may cause the battery box to deform or crack due to long-term stress, which will reduce the service life of the battery box and pose safety risks. Summary of the invention

[0004] Based on this, it is necessary to provide a dual-fluid atomizing nozzle to address the problem that the atomizing nozzle occupies a large space and causes the battery box to be deformed or cracked.

[0005] A dual-fluid atomizing nozzle, the dual-fluid atomizing nozzle comprising: a shell, the interior of the shell has a receiving chamber, and the two ends of the shell are respectively provided with an air inlet and a connecting port connected to the receiving chamber; a diverter deflector, arranged in the receiving chamber, the diverter deflector comprises a diverter part and a deflection part, the diverter part is connected to the side wall of the receiving chamber and is provided with a diverter channel, the deflection part is connected to the side of the diverter part away from the air inlet and forms an air gap with the side wall of the receiving chamber, one side of the air gap is connected to the connecting port, and the other side of the air gap is connected to the air inlet through the diverter channel; a resonator, connected to the shell, the resonator is provided with a liquid inlet hole and a mounting hole; and a liquid outlet nozzle, connected to the resonator through the mounting hole, one end of the liquid outlet nozzle is connected to the liquid inlet hole and the connecting port, and the other end of the liquid outlet nozzle is provided with a liquid outlet.

[0006] In one of the embodiments, the air passage gap is spaced apart from the diversion channel in the radial direction of the shell.

[0007] In one embodiment, at least a portion of the deflection portion is arranged to gradually expand along a direction from the air inlet toward the connecting port.

[0008] In one embodiment, the deflection portion includes a connecting section and a deflection section, the connecting section is connected to the diversion portion, one end of the deflection section is connected to the connecting section, and the other end of the deflection section extends obliquely toward the side wall of the receiving cavity until the air gap is formed between the deflection section and the side wall of the receiving cavity.

[0009] In one embodiment, the diverter channel is located between the connecting section and the side wall of the receiving cavity in the radial direction of the shell; and / or the size of the diverter channel in the radial direction of the shell is smaller than the size of the deflection section in the radial direction of the shell; and / or the diverter channel is spaced apart from the side wall of the receiving cavity in the radial direction of the shell.

[0010] In one embodiment, the liquid outlet nozzle includes a main body section and a mounting section, the main body section extends into the mounting hole and is connected to the liquid inlet hole and the connecting port, one end of the mounting section is connected to the main body section, and the other end of the mounting section is provided with the liquid outlet; wherein, a connecting protrusion is provided on the outer surface of the mounting section, and a connecting groove is provided on the side wall of the mounting hole to cooperate with the connecting protrusion; or a connecting groove is provided on the outer surface of the mounting section, and a connecting protrusion is provided on the side wall of the mounting hole to cooperate with the connecting groove.

[0011] In one of the embodiments, the connecting protrusion and the connecting groove are configured as mutually matching threaded structures.

[0012] In one embodiment, the liquid outlet nozzle also includes a liquid separation section, which is arranged around the outer circumference of the main body section, the outer wall of the liquid separation section is in contact with the inner wall of the mounting hole, and the liquid separation section is penetrated by a liquid separation channel, one end of the liquid separation channel is connected to the liquid inlet hole, and the other end of the liquid separation channel is connected to the main body section and the connecting port.

[0013] In one embodiment, a side of the liquid separation channel close to the main body section is flush with an outer surface of the main body section.

[0014] In one embodiment, the liquid separating section includes a liquid separating portion and a protrusion, the liquid separating portion is arranged around the outer periphery of the main section and is provided with a liquid separating channel, the protrusion protrudes from the liquid separating portion in the axial direction of the mounting hole, and the protrusion and the liquid separating channel are continuously distributed in the radial direction of the mounting hole.

[0015] The above-mentioned dual-fluid atomizing nozzle comprises a shell, a flow diverter, a resonator and a liquid outlet nozzle, wherein the flow diverter comprises a flow diverter and a deflecting portion, the flow diverter is connected to the side wall of the housing chamber of the shell and is provided with a flow diverter channel, the deflecting portion is connected to the flow diverter and forms an air gap with the side wall of the housing chamber, one side of the air gap is connected to the connecting port, and the other side of the air gap is connected to the air inlet through the flow diverter channel. Thus, by forming a flow diverter channel inside the flow diverter deflector, and arranging the flow diverter deflector as a whole in the housing chamber of the shell so that an air gap is formed between the flow diverter deflector and the inner wall of the shell, and by utilizing the air inlet of the shell to connect to an external air source, the integration of the flow diverter deflector and the shell can be improved while achieving air intake, which is beneficial to reducing the space occupied by the dual-fluid atomizing nozzle, reducing the external dimensions, reducing the weight, and facilitating the installation of the dual-fluid atomizing nozzle in a place with relatively small space dimensions. Furthermore, the use of the dual-fluid atomizing nozzle can reduce the risk of deformation or cracking of the battery box due to long-term stress, which is beneficial to extending the service life of the battery box and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a schematic diagram showing the overall structure of a dual-fluid atomizing nozzle in some embodiments of the present application.

[0017] FIG. 2 is a schematic diagram showing the internal structure of a dual-fluid atomizing nozzle in some embodiments of the present application.

[0018] Figure 3 A schematic cross-sectional structure diagram of a dual-fluid atomizing nozzle in some embodiments of the present application is shown.

[0019] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0020] Figure 5 for Figure 3 Schematic diagram of the enlarged structure at point B in the middle.

[0021] Figure 6 The particle size test report of spray test using water as sample is provided for some embodiments of the present application.

[0022] Figure 7 This is a particle size test report of spray testing using water additives as samples for some embodiments of this application.

[0023] Figure 8 This is a particle size test report of spray testing using perfluorohexanone fire extinguishing agent as a sample for some embodiments of the present application.

[0024] Figure Number:

[0025] 10. Double fluid atomizing nozzle;

[0026] 100, housing; 110, receiving chamber; 120, air inlet; 130, connection port;

[0027] 200, flow diversion deflector; 210, flow diversion portion; 211, flow diversion channel; 220, deflection portion; 221, connecting section; 222, deflection section;

[0028] 300, resonator; 310, liquid inlet hole; 320, mounting hole; 321, connecting slot; 330, annular resonant slot; 340, conical connecting channel; 350, gas-liquid mixing chamber; 360, annular liquid slot;

[0029] 400, liquid outlet nozzle; 410, main body section; 420, mounting section; 421, liquid outlet; 422, connecting protrusion; 430, liquid separation section; 431, liquid separation channel; 432, liquid separation part; 433, protruding part;

[0030] 500, air gap;

[0031] 600, circlip;

[0032] 700, gland nut. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0034] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0035] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0039] The atomizing nozzle for the energy storage battery box is generally installed vertically on the outer shell of the battery box, and is connected to the fire suppression device through the liquid infusion pipe and the gas pipe. When the battery in the battery box has thermal runaway or causes a fire, the fire suppression device activates the gas transported by the gas pipe to generate ultrasonic waves at the atomizing nozzle. The fire extinguishing medium transported by the liquid infusion pipe is instantly atomized at the atomizing nozzle and sprayed into the battery box under the action of the airflow to extinguish or suppress the fire. Since the energy storage battery box is basically installed in the energy storage cabin (container), due to the limitation of the space size, if the outer dimensions of the atomizing nozzle are large, the installation of the energy storage battery box will be limited. In addition, most battery boxes are made of plastic materials, and the atomizing nozzle is installed vertically on the outside of the box. Long-term stress will cause the battery box to deform or crack.

[0040] In order to solve at least part of the above technical problems, an embodiment of the present application provides a dual-fluid atomizing nozzle 10.

[0041] See Figures 1 to Figure 5 As shown, there is a structural schematic diagram of the dual-fluid atomizing nozzle 10 in an embodiment of the present application. The dual-fluid atomizing nozzle 10 provided in the embodiment of the present application includes a shell 100, a diverter deflector 200, a resonator 300 and a liquid outlet nozzle 400.

[0042] The housing 100 has a receiving chamber 110 inside, and the two ends of the housing 100 are respectively provided with an air inlet 120 and a connecting port 130 connected to the receiving chamber 110. Specifically, the housing 100 forms part of the outer contour of the dual-fluid atomizing nozzle 10, and the interior of the housing 100 is hollow and forms the receiving chamber 110. One end of the housing 100 is provided with an air inlet 120, and the air inlet 120 is used to connect the gas source, so as to transport gas into the receiving chamber 110 through the air inlet 120. Exemplarily, the air inlet 120 can be set to an interface shape connected to an external pipeline to connect the gas source through the pipeline. The other end of the housing 100 is provided with a connecting port 130, and the connecting port 130 is used to connect to the resonator 300 and can be used for the gas in the receiving chamber 110 to be transported to the resonator 300.

[0043] The flow diverter 200 is disposed in the receiving chamber 110, and is used to divert the gas entering the receiving chamber 110, and change the flow direction of the gas to achieve deflected airflow. The flow diverter 200 includes a diverter portion 210 and a deflection portion 220. The diverter portion 210 is connected to the side wall of the receiving chamber 110, and at least one diverter channel 211 is provided through the diverter portion 210. Specifically, the outer periphery of the diverter portion 210 abuts against the side wall of the receiving chamber 110, and is fixed by an elastic retaining ring 600. The diverter portion 210 divides the receiving chamber 110 into two parts, one of which is surrounded by one side of the diverter portion 210 and the air inlet 120, and the other is surrounded by the other side of the diverter portion 210 and the connecting port 130. The deflection portion 220 is connected to a side of the diverter portion 210 away from the air inlet 120, that is, the deflection portion 220 is located in the space enclosed by the other side of the diverter portion 210 and the connection port 130. An air gap 500 is enclosed between the deflection portion 220 and the side wall of the receiving chamber 110, one side of the air gap 500 is connected to the connection port 130, and the other side of the air gap 500 is connected to the air inlet 120 through the diverter channel 211.

[0044] The resonator 300 is connected to the housing 100, and a liquid inlet hole 310 and a mounting hole 320 are provided in the resonator 300. Specifically, the resonator 300 refers to an electronic component that generates a resonant frequency, and has the characteristics of stability and good anti-interference performance. The resonator 300 is connected to one end of the housing 100 with a connecting port 130, so that the gas entering the receiving cavity 110 can be transported to the resonator 300 through the connecting port 130. One end of the liquid inlet hole 310 is connected to the mounting hole 320, and the other end of the liquid inlet hole 310 is used for an external liquid source to transport liquid into the resonator 300, so that the liquid and gas are mixed and atomized to form a spray. Exemplarily, the resonator 300 can be connected to the housing 100 through a gland nut 700.

[0045] The liquid outlet nozzle 400 is connected to the resonator 300 through the mounting hole 320, one end of the liquid outlet nozzle 400 is connected to the liquid inlet hole 310 and the connecting port 130, and the other end of the liquid outlet nozzle 400 is provided with a liquid outlet 421. Specifically, a liquid outlet through hole is provided inside the liquid outlet nozzle 400, and when the liquid outlet nozzle 400 is connected to the mounting hole 320, one end of the liquid outlet nozzle 400 extends into the mounting hole 320, so that one end of the liquid outlet through hole is connected to the liquid inlet hole 310 and the connecting port 130, and the other end of the liquid outlet through hole forms the liquid outlet 421.

[0046] Through the above structural design, when the dual-fluid atomizing nozzle 10 of the embodiment of the present application is used, the air inlet 120 of the housing 100 is connected to an external air source, and the liquid inlet hole 310 of the resonator 300 is connected to an external liquid source. The gas enters the housing cavity 110 of the housing 100 through the air inlet 120, and is divided into a plurality of small air streams through a plurality of diversion channels 211 of the diversion deflector 200, and then the air stream passes through the air gap 500 and is sent to the resonator 300 through the connecting port 130. After the liquid enters the resonator 300 through the liquid inlet hole 310, the liquid flow is mixed with the air flow and atomized to form a spray under the action of the resonator 300, and then sprayed out through the liquid outlet nozzle 400 installed in the mounting hole 320.

[0047] Therefore, the embodiment of the present application forms a diverter channel 211 inside the diverter deflector 200, and sets the diverter deflector 200 as a whole in the accommodating cavity 110 of the shell 100 so that an air gap 500 is formed between the diverter deflector 200 and the inner wall of the shell 100, and utilizes the air inlet 120 of the shell 100 to connect to an external air source, so that the integration of the diverter deflector 200 and the shell 100 can be improved while achieving air intake, which is beneficial to reducing the space occupied by the dual-fluid atomizing nozzle 10, reducing the external size, reducing the weight, and facilitating the installation of the dual-fluid atomizing nozzle 10 in a place with relatively small space size.

[0048] Furthermore, the dual-fluid atomizing nozzle 10 of the embodiment of the present application was vertically mounted on the battery box, and after a 190-hour "temperature cycle aging test" in a "double 85 test box", no deformation or cracking of the box occurred. It can be seen that the use of the dual-fluid atomizing nozzle 10 of the embodiment of the present application can reduce the risk of deformation or cracking of the battery box due to long-term stress, which is beneficial to extending the service life of the battery box and improving safety.

[0049] It should be noted that, in order to facilitate understanding of the technical solution of the present application, the following embodiments are exemplified by taking the housing 100 and the receiving cavity 110 as cylindrical structures. It should be understood that, without departing from the design spirit of the present application, all other structural forms of the housing 100 and the receiving cavity 110 should be within the protection scope of the present application.

[0050] For example, in some embodiments, the housing 100 is a substantially cylindrical structure, and the receiving cavity 110 is a cylindrical shape coaxial with the housing 100. In this case, the axial direction of the housing 100 is the same as the axial direction of the receiving cavity 110, that is, Figure 3 The radial direction of the housing 100 is parallel to the radial direction of the receiving cavity 110, ie Figure 3 The horizontal direction in this article can be understood by referring to the explanation here.

[0051] In some embodiments, the air gap 500 is spaced apart from the flow diversion channel 211 in the radial direction of the housing 100. Figure 4 As shown, the flow diversion channel 211 is arranged to extend along the axial direction of the housing 100, so the gas will also be transported along the axial direction of the housing 100 after passing through the flow diversion channel 211. In this embodiment, since the air-passing gap 500 is arranged to be spaced apart from the flow diversion channel 211 in the radial direction of the housing 100, the gas passing through the flow diversion channel 211 will change its flow direction before entering the air-passing gap 500, thereby realizing the function of deflecting the air flow.

[0052] In some embodiments, at least a portion of the deflection portion 220 is gradually expanded along the direction from the air inlet 120 to the connection port 130. The direction from the air inlet 120 to the connection port 130 is parallel to the axial direction of the housing 100, that is, Figure 3 The gradually expanding arrangement refers to a structure in which at least a portion of the deflection portion 220 is in a gradually expanding cross-sectional dimension.

[0053] Specifically, see Figure 3 As shown, the gas-passing gap 500 is located at the bottom of at least a portion of the deflection portion 220. By gradually expanding at least a portion of the deflection portion 220, the gas passing through the flow channel 211 can be blocked by at least a portion of the deflection portion 220 and flow along the outer surface of the deflection portion 220. This is beneficial for changing the gas flow direction to achieve the function of deflecting the gas, and can also gather the gas to the gas-passing gap 500, so that the gas can pass through the gas-passing gap 500, thereby improving the gas transmission efficiency.

[0054] In some embodiments, the deflection portion 220 includes a connecting section 221 and a deflection section 222, the connecting section 221 is connected to the diversion portion 210, one end of the deflection section 222 is connected to the connecting section 221, and the other end of the deflection section 222 extends obliquely toward the side wall of the receiving cavity 110 until an air gap 500 is formed between the side wall of the receiving cavity 110.

[0055] See also Figure 3 As shown, the connecting section 221 is a cylindrical structure coaxial with the housing 100, and the two ends of the connecting section 221 are respectively connected to the diverter 210 and the deflection section 222, and there is a gap between the outer wall of the connecting section 221 and the side wall of the receiving chamber 110 for gas to pass through. The deflection section 222 is a truncated cone structure coaxial with the connecting section 221, and the end of the deflection section 222 with a smaller diameter is connected to the connecting section 221, and the end of the deflection section 222 with a larger diameter extends toward the connecting port 130, and a circular gas gap 500 is formed between the deflection section 222 and the side wall of the receiving chamber 110. Through the above structural design, the gas flow direction can be changed, and it is also convenient to guide the gas to pass through the gas gap 500.

[0056] In some embodiments, the flow dividing channel 211 is located between the connecting section 221 and the side wall of the receiving chamber 110 in the radial direction of the housing 100. Figure 4 As shown, at this time, after passing through the diversion channel 211, the gas will directly move toward the deflection segment 222 of the deflection part 220 and collide with the deflection segment 222, so that the gas flow direction can be changed by the deflection segment 222, which is beneficial to improve the guiding effect of the deflection segment 222 on the gas flow direction.

[0057] In some embodiments, the radial dimension of the flow dividing channel 211 in the housing 100 is smaller than the radial dimension of the deflection section 222 in the housing 100. Figure 4 As shown, at this time, all the gas flowing out of the diversion channel 211 will move along the axial direction of the housing 100 and collide with the deflection section 222, so that the flow direction of all the gas can be guided, further improving the guiding effect on the gas flow direction.

[0058] In some embodiments, the flow dividing channel 211 is spaced apart from the side wall of the receiving chamber 110 in the radial direction of the housing 100. Figure 4 As shown, the air gap 500 is formed by the interval between the deflection portion 220 and the side wall of the receiving cavity 110. At this time, the diverter channel 211 is spaced apart from the side wall of the receiving cavity 110 in the radial direction of the shell 100, so that the diverter channel 211 is offset from the air gap 500 in the radial direction of the shell 100. The gas passing through the diverter channel 211 will change its flow direction when entering the air gap 500, so as to realize the function of deflecting the gas.

[0059] In some embodiments, the liquid outlet nozzle 400 includes a main body section 410 and a mounting section 420. The main body section 410 extends into the mounting hole 320 and is connected to the liquid inlet hole 310 and the connecting port 130. One end of the mounting section 420 is connected to the main body section 410, and the other end of the mounting section 420 is provided with a liquid outlet 421; wherein, the outer surface of the mounting section 420 is provided with a connecting protrusion 422, and the side wall of the mounting hole 320 is provided with a connecting card groove 321 that cooperates with the connecting protrusion 422.

[0060] For example, referring to FIG. 2 , the mounting hole 320 is a cylindrical hole coaxial with the housing 100, the main body section 410 and the mounting section 420 are both cylindrical structures coaxial with the mounting hole 320, and the outer diameter of the main body section 410 is smaller than the outer diameter of the mounting section 420, so as to construct a liquid flow channel between the outer surface of the main body section 410 and the inner wall of the resonator 300. The main body section 410 and the mounting section 420 are provided with through holes that are interconnected, and the spray generated in the resonator 300 passes through the through holes in the main body section 410 and the mounting section 420 in turn and is sprayed out through the liquid outlet 421. The outer surface of the mounting section 420 is provided with a connecting protrusion 422 protruding outwardly, and the side wall of the mounting hole 320 is provided with a connecting card slot 321 recessed inwardly, for example, the connecting protrusion 422 and the connecting card slot 321 can be provided in a mutually matching buckle form. When installing the liquid outlet nozzle 400 in the installation hole 320, the installation can be completed by simply inserting the connection protrusion 422 on the installation section 420 into the connection groove 321 on the side wall of the installation hole 320. At this time, it can be ensured that the liquid outlet nozzle 400 is stably installed in the resonator 300. In addition, since the liquid outlet nozzle 400 can be directly installed in the resonator 300 through the installation hole 320, there is no need to set an additional connection component between the liquid outlet nozzle 400 and the resonator 300, which is conducive to reducing the weight and size of the dual-fluid atomizing nozzle 10, and it is convenient to install the dual-fluid atomizing nozzle 10 in a place with a relatively narrow space size, so as to further improve the applicability.

[0061] It can be understood that in other optional embodiments, the outer surface of the mounting section 420 is provided with a connecting groove 321, and the side wall of the mounting hole 320 is provided with a connecting protrusion 422 that cooperates with the connecting groove 321. In this case, the liquid outlet nozzle 400 can also be installed in the resonator 300 through the cooperation between the connecting groove 321 and the connecting protrusion 422.

[0062] In some embodiments, the connecting protrusion 422 and the connecting slot 321 are configured as mutually matching threaded structures. Referring to FIG. 2 , the mounting hole 320 is configured as a threaded hole, and the outer surface of the mounting section 420 is provided with an external thread, so that the liquid discharge nozzle 400 and the resonator 300 are connected by threads. In this way, it can be ensured that the liquid discharge nozzle 400 and the resonator 300 remain relatively fixed in the axial direction of the housing 100, that is, it is ensured that the liquid discharge nozzle 400 and the resonator 300 are firmly connected, and at the same time, the liquid discharge nozzle 400 can be screwed to adjust the relative position of the liquid discharge nozzle 400 and the resonator 300 in the axial direction of the housing 100 through the thread, so that the space of the gas-liquid mixing chamber 350 at the end of the liquid discharge nozzle 400 is adjustable, which is conducive to improving the flexibility of gas and liquid mixed atomization.

[0063] In some embodiments, the liquid outlet nozzle 400 further includes a liquid separation section 430, which is arranged around the outer periphery of the main section 410, the outer wall of the liquid separation section 430 contacts the inner wall of the mounting hole 320, and the liquid separation section 430 is provided with a liquid separation channel 431, one end of the liquid separation channel 431 is connected to the liquid inlet hole 310, and the other end of the liquid separation channel 431 is connected to the main section 410 and the connecting port 130. Referring to FIG. 2, the liquid separation section 430 is an annular structure coaxial with the mounting hole 320, and a plurality of liquid separation channels 431 are provided on the liquid separation section 430, through which the liquid flow from the liquid inlet hole 310 can be dispersed into a plurality of small liquid flows, so that the liquid and the gas are fully mixed and atomized. The inner side of the liquid separation section 430 is connected to the main section 410, for example, integrally formed, and the outer side of the liquid separation section 430 contacts the side wall of the mounting hole 320, thereby forming a support between the main section 410 and the side wall of the mounting hole 320 to ensure that the liquid outlet nozzle 400 is firmly installed in the resonator 300.

[0064] It is understood that the size and number of the liquid separation channels 431 can be adaptively designed according to the flow requirements of different types of fire extinguishing agents. For example, the fire extinguishing agent liquid added from the liquid inlet 310 can be water, water additives, chemical liquids, etc.

[0065] In some embodiments, the side of the liquid separation channel 431 close to the main body section 410 is flush with the outer surface of the main body section 410. Figure 3 and Figure 5 As shown, the side of the liquid separation channel 431 close to the main section 410 is the right side of the liquid separation channel 431 from the perspective of the figure, wherein the right side of the liquid separation channel 431 is located on the same vertical line as the outer surface of the main section 410. Thus, the liquid flow entering from the liquid inlet hole 310 can move vertically upward along the outer surface of the main section 410 and directly enter the gas-liquid mixing chamber 350 through the liquid separation channel 431, so that the resistance of the liquid entering the liquid separation channel 431 is small, and the liquid delivery efficiency is higher.

[0066] In some embodiments, the liquid separating section 430 includes a liquid separating portion 432 and a protrusion 433. The liquid separating portion 432 is arranged around the outer periphery of the main section 410 and is provided with a liquid separating channel 431. The protrusion 433 protrudes from the liquid separating portion 432 in the axial direction of the mounting hole 320. The protrusion 433 and the liquid separating channel 431 are continuously distributed in the radial direction of the mounting hole 320.

[0067] See also Figure 3 and Figure 5As shown, the mounting hole 320 is coaxially arranged with the housing 100, that is, the axial direction of the mounting hole 320 coincides with the axial direction of the housing 100, and the radial direction of the mounting hole 320 is parallel to the radial direction of the housing 100. The liquid separation portion 432 and the protrusion 433 are sequentially arranged along the axial direction of the housing 100, and the protrusion 433 is located at the top of the liquid separation portion 432 and the protrusion 433 protrudes from the upper end surface of the liquid separation portion 432 and the liquid outlet nozzle 400. The top of the protrusion 433 abuts against the inner wall of the resonator 300, and the right side of the protrusion 433, the inner wall of the resonator 300, and the upper end surface of the liquid outlet nozzle 400 together form a gas-liquid mixing chamber 350. In addition, the right side of the protrusion 433 and the left side of the liquid separation channel 431 are located on the same vertical straight line, that is, the protrusion 433 and the liquid separation channel 431 are continuously distributed in the radial direction of the housing 100. Therefore, when the liquid enters the gas-liquid mixing chamber 350 from the liquid separation channel 431, it will be blocked by the right side of the protrusion 433, causing the liquid to move toward the middle area of ​​the gas-liquid mixing chamber 350, so as to facilitate the rapid and sufficient mixing and atomization of the liquid and the gas in the middle area of ​​the gas-liquid mixing chamber 350, thereby improving the atomization effect.

[0068] In some embodiments, the resonator 300 is provided with an annular resonance groove 330 coaxial with the air gap 500. The annular resonance groove 330 is arranged on the side of the resonator 300 facing the flow diverter 200 and is formed by the resonator 300 and the housing 100. The notch of the annular resonance groove 330 is arranged toward the air gap 500. The resonator 300 is also provided with a conical connection channel 340. The conical connection channel 340 is coaxially connected with the annular resonance groove 330. The conical connection channel 340 is opened on the side of the resonator 300 facing the flow diverter 200 so that the gas blown into the annular resonance groove 330 can be output through the conical connection channel 340. A gas-liquid mixing chamber 350 is formed between the resonator 300, the liquid outlet nozzle 400, and the bottom of the conical connection channel 340. The gas-liquid mixing chamber 350 is used for mixing gas and liquid for atomization. An annular liquid groove 360 ​​is provided inside the resonator 300 . The annular liquid groove 360 ​​surrounds the outer circumference of the liquid outlet nozzle 400 . The annular liquid groove 360 ​​is connected to the liquid inlet hole 310 and is connected to the gas-liquid mixing chamber 350 through the liquid separation channel 431 .

[0069] For example, the dual-fluid atomizing nozzle 10 of the embodiment of the present application can deliver the working gas with a pressure higher than the critical pressure from the air inlet 120 of the housing 100 into the receiving chamber 110 of the housing 100, and enter the annular resonance groove 330 formed by the housing 100 and the resonator 300 through the diversion channel 211 of the diversion deflector 200 and the air gap 500. When the annular resonance groove 330 suppresses the supersonic jet, a normal shock wave is generated, and a subsonic zone is generated at the conical connecting channel 340 of the resonator 300. The liquid enters the annular liquid groove 360 ​​formed by the resonator 300 and the liquid outlet nozzle 400 through the liquid inlet hole 310, and enters the gas-liquid mixing chamber 350 through the liquid separation channel 431 provided on the liquid outlet nozzle 400. The subsonic airflow with a positive shock wave from the conical connecting channel 340 instantly atomizes the liquid in the gas-liquid mixing chamber 350, and sprays the atomized droplets through the liquid outlet 421 of the liquid outlet nozzle 400, thereby achieving full mixing and atomization of the gas and liquid to ensure the atomization effect.

[0070] The specific effect of the use of the dual-fluid atomizing nozzle 10 of the embodiment of the present application can be referred to Figures 6 to 8 Particle size test report in:

[0071] according to Figure 6 It can be seen from the particle size test report that the dual-fluid atomizing nozzle 10 of the embodiment of the present application can spray droplets with a D50 of 35.792 μm and a D97 of 117.570 μm when the gas pressure is 0.3-0.5 MPa and the liquid flow rate is 1.0 L / min.

[0072] according to Figure 7 It can be seen from the particle size test report that the dual-fluid atomizing nozzle 10 of the embodiment of the present application can spray droplets with a D50 of 35.554 μm and a D97 of 122.748 μm when the gas pressure is 0.3-0.5 MPa and the liquid flow rate is 1.0 L / min.

[0073] according to Figure 8 It can be seen from the particle size test report that the dual-fluid atomizing nozzle 10 of the embodiment of the present application can spray droplets with a D50 of 34.708 μm and a D97 of 129.056 μm when the gas pressure is 0.3-0.5 MPa and the liquid flow rate is 1.0 L / min.

[0074] Among them, D50 is usually used to describe the size distribution of droplets in water mist or water spray. In the technical specifications of fine water mist fire extinguishing systems, D50 refers to the diameter of droplets sprayed out of the nozzle and formed on the plane 1.0m below the axis of the nozzle under the minimum design working pressure, of which 50% of the droplet diameters are less than or equal to a certain specific value. This parameter is one of the key indicators for measuring droplet size and is used to ensure that the fine water mist system can produce droplets small enough to achieve a fire extinguishing effect. D97 means that in the particle size distribution, 97% of the particle volume is less than a certain particle size. For example, in the application of fine water mist fire extinguishing systems, D97 can be used to define the size of droplets to ensure that 97% of the droplet diameters do not exceed a certain value, thereby ensuring the fire extinguishing effect and performance of the fine water mist system.

[0075] In summary, the dual-fluid atomizing nozzle 10 of the embodiment of the present application performs droplet particle size tests on different types of fire extinguishing agents, such as water, water additives, and perfluorohexanone fire extinguishing agents, and the results all meet the requirements. Specifically, the dual-fluid atomizing nozzle 10 of the embodiment of the present application can spray droplets with a D50 of less than 36μm and a D97 of less than 130μm when the gas pressure is 0.3-0.5MPa and the water flow rate is about 1.0L / min, meeting the droplet requirements of D50 less than 200μm and D99 less than 400μm specified in GB50898 "Technical Specifications for Fine Water Mist Fire Extinguishing Systems", thereby being able to extinguish fires through spraying and effectively prevent and control battery box fires.

[0076] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A dual-fluid atomizing nozzle, characterized in that: The dual-fluid atomizing nozzle comprises: A shell, wherein the interior of the shell has a receiving cavity, and two ends of the shell are respectively provided with an air inlet and a connection port communicated with the receiving cavity; A flow diverter is arranged in the receiving chamber, the flow diverter comprises a flow diverter and a deflector, the flow diverter is connected to the side wall of the receiving chamber and is provided with a flow diverter channel, the deflector is connected to a side of the flow diverter away from the air inlet and forms an air gap with the side wall of the receiving chamber, one side of the air gap is communicated with the connecting port, and the other side of the air gap is communicated with the air inlet through the flow diverter channel; A resonator connected to the housing, wherein a liquid inlet hole and a mounting hole are provided in the resonator; and A liquid outlet nozzle is connected to the resonator through the mounting hole, one end of the liquid outlet nozzle is communicated with the liquid inlet hole and the connecting port, and the other end of the liquid outlet nozzle is provided with a liquid outlet.

2. The dual-fluid atomizing nozzle according to claim 1, characterized in that: The air passage gap is spaced apart from the diversion channel in the radial direction of the shell.

3. The dual-fluid atomizing nozzle according to claim 1, characterized in that: At least a portion of the deflection portion is arranged to gradually expand along a direction from the air inlet toward the connecting port.

4. The dual-fluid atomizing nozzle according to claim 1, characterized in that: The deflection portion includes a connecting section and a deflection section, the connecting section is connected to the diversion portion, one end of the deflection section is connected to the connecting section, and the other end of the deflection section extends obliquely toward the side wall of the receiving cavity until the air gap is formed between the deflection section and the side wall of the receiving cavity.

5. The dual-fluid atomizing nozzle according to claim 4, characterized in that: The flow diversion channel is located between the connecting section and the side wall of the receiving cavity in the radial direction of the housing; and / or The dimension of the flow diversion channel in the radial direction of the housing is smaller than the dimension of the deflection section in the radial direction of the housing; and / or The flow-dividing channel is spaced apart from the side wall of the receiving cavity in the radial direction of the shell.

6. The dual-fluid atomizing nozzle according to any one of claims 1 to 5, characterized in that: The liquid outlet nozzle comprises a main body section and a mounting section, wherein the main body section extends into the mounting hole and communicates with the liquid inlet hole and the connecting port, one end of the mounting section is connected to the main body section, and the other end of the mounting section is provided with the liquid outlet; Wherein, the outer surface of the mounting section is provided with a connecting protrusion, and the side wall of the mounting hole is provided with a connecting groove matching with the connecting protrusion; or The outer surface of the mounting section is provided with a connecting slot, and the side wall of the mounting hole is provided with a connecting protrusion that matches the connecting slot.

7. The dual-fluid atomizing nozzle according to claim 6, characterized in that: The connecting protrusion and the connecting groove are configured as mutually matching threaded structures.

8. The dual-fluid atomizing nozzle according to claim 6, characterized in that: The liquid outlet nozzle also includes a liquid separation section, which is arranged around the outer circumference of the main body section, the outer wall of the liquid separation section is in contact with the inner wall of the mounting hole, and the liquid separation section is penetrated by a liquid separation channel, one end of the liquid separation channel is connected to the liquid inlet hole, and the other end of the liquid separation channel is connected to the main body section and the connecting port.

9. The dual-fluid atomizing nozzle according to claim 8, characterized in that: A side of the liquid separation channel close to the main body section is flush with the outer surface of the main body section.

10. The dual-fluid atomizing nozzle according to claim 8, characterized in that: The liquid separating section includes a liquid separating portion and a protruding portion. The liquid separating portion is arranged around the outer periphery of the main section and is provided with a liquid separating channel. The protruding portion protrudes from the liquid separating portion in the axial direction of the mounting hole. The protruding portion and the liquid separating channel are continuously distributed in the radial direction of the mounting hole.

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