WO2024103664A1

WO2024103664A1 - Steam type sprayer

Info

Publication number: WO2024103664A1
Application number: PCT/CN2023/095429
Authority: WO
Inventors: 唐小华
Original assignee: 芜湖快螳螂智能设备有限公司
Priority date: 2022-11-14
Filing date: 2023-05-22
Publication date: 2024-05-23
Also published as: CN115885962A

Abstract

A steam type sprayer (100). The steam type sprayer (100) comprises: an air supply mechanism (10), provided with an air supply port (11); a combustion mechanism housing (21) having one side provided with an air inlet channel, and the other side which is open, the air inlet channel being connected to the air supply port (11), and one side of a combustion mechanism running through the open side of the combustion mechanism housing (21); a combustor structure (30), comprising a combustor inner housing (31) and a combustor outer housing (32), a first heating chamber (311) being defined in the combustor inner housing (31), the other side of the combustion mechanism running through the combustor outer housing, and one side of the combustor inner housing (31) being connected to the other side of the combustion mechanism; and an exhaust pipe structure (40), arranged on the other side of the combustor inner housing (31) away from the combustion mechanism in the axial direction, a second heating chamber (44) being defined in the exhaust pipe structure (40) and communicated with the first heating chamber (311), the exhaust pipe structure (40) being provided with an exhaust port (431), and the opening direction of the exhaust port (431) facing away from the combustion mechanism. The combustor structure (30) of the steam type sprayer has a simple structure, and can reduce the probability of scalding, reduce noise, and improve safety and reliability.

Description

A steam sprayer

Technical Field

The invention relates to the technical field of agricultural machinery, in particular to a burner structure of a steam sprayer and a steam sprayer.

Background technique

Sprayers are agricultural and forestry plant protection machinery and equipment, which are widely used in pest control, disinfection and sterilization or fertilization. Sprayers include fog machines and steam sprayers. Steam sprayers separate the agent and the auxiliary agent and heat the auxiliary agent separately, and then mix the agent at room temperature with the auxiliary agent heated at high temperature for spraying to ensure the medicinal properties of the agent. Compared with fog machines, steam sprayers have the advantages of smaller size and lighter weight. Therefore, steam sprayers are more widely used.

When an existing steam sprayer is in use, it absorbs heat through a single-layer heat-absorbing coil arranged in the sprayer, which can only absorb 60% of the heat. Some of the heat is lost into the air through the outer shell, resulting in low heat utilization rate. In addition, since the existing steam sprayer usually directly sets an exhaust port on the burner to discharge smoke, during use, the smoke or flame at the exhaust port causes high temperature, which can easily scald the user, and even cause fire in severe cases. The safety factor is low and is not conducive to the overall operation. At the same time, the machine makes a lot of noise during operation, which affects the user experience. In addition, when the existing sprayer is ignited, a plunger pump is usually used for constant oil injection, but this method can cause the sprayer to have slow ignition, high ignition power and high oil consumption.

Summary of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a steam sprayer, the burner structure of which is simple in structure, can reduce the chance of scalding, reduce noise, and improve safety and reliability.

The steam sprayer according to an embodiment of the present invention comprises: an air supply mechanism, the air supply mechanism having an air supply port; a combustion mechanism assembly, the combustion mechanism assembly comprising a combustion mechanism shell and a combustion mechanism, one side of the combustion mechanism shell having an air inlet channel and the other side being open, the air inlet channel being connected to the air supply port, and one side of the combustion mechanism being penetrated through the open side of the combustion mechanism shell; a burner structure, the burner structure comprising a burner inner shell and a burner outer shell arranged coaxially or parallel to the burner inner shell, a first heating chamber being defined in the burner shell, the other side of the combustion mechanism being penetrated through the burner outer shell and one side of the burner inner shell being connected to the other side of the combustion mechanism; an exhaust pipe structure, the exhaust pipe structure being provided on the other side of the burner inner shell away from the combustion mechanism in the axial direction, a second heating chamber being defined in the exhaust pipe structure and the second heating chamber being connected to the first heating chamber, the exhaust pipe structure having an exhaust port and the opening direction of the exhaust port facing away from the combustion mechanism.

According to the steam sprayer of the embodiment of the present invention, an exhaust pipe structure is provided on the burner inner shell, and the second heating chamber of the exhaust pipe structure is connected to the first heating chamber of the burner inner shell, and the opening direction of the exhaust port is opposite to the combustion mechanism. Compared with the solution of directly providing the smoke exhaust port on the burner inner shell in the prior art, the exhaust pipe structure can be used to guide the smoke and flame to the side opposite to the combustion mechanism, so that the exhaust direction of the smoke and flame is away from the operator to avoid the risk of scalding, and it can also avoid the smoke and flame being too close to the burner inner shell, thereby igniting the internal oil and gas mixture. Safety and reliability are greatly improved. At the same time, through the provision of the exhaust pipe structure, it is also possible to Reduce noise to a certain extent.

According to some embodiments of the present invention, the burner structure includes: an internal heating tube, which is arranged in the first heating chamber, and the inlet of the internal heating tube and the outlet of the internal heating tube respectively extend out of the first heating chamber along the other side of the burner inner shell away from the combustion mechanism; a first gap is formed between the burner outer shell and the burner inner shell, wherein an external heating tube is provided in the first gap, the external heating tube forms a waste heat chamber, the external heating tube has an inlet end extending out of the burner outer shell, and the outlet of the external heating tube is connected to the inlet of the inner heating tube.

According to some embodiments of the present invention, the external heating tube is an outer coil tube, and the outer coil tube is spirally attached to the outer wall of the burner inner shell along the axial direction of the burner inner shell.

According to some embodiments of the present invention, the external heating tube is a heating flat tube, which is formed as a cylindrical hollow structure extending along the axial direction of the burner inner shell, and the heating flat tube is sleeved on the outer wall of the burner inner shell and the radial inner side of the heating flat tube is tightly fitted with the outer wall of the burner inner shell. Alternatively, the external heating tube is a plurality of heating flat tubes, each of which is formed as an arc-shaped hollow structure extending along the axial direction of the burner inner shell, and the plurality of heating flat tubes are circumferentially attached to the outer wall of the burner inner shell.

According to some embodiments of the present invention, the combustion mechanism includes: a cylinder, one side of the cylinder has a first opening and the other side has a first through hole extending axially thereof, the peripheral wall of the cylinder has a plurality of second through holes extending through the thickness thereof, and the plurality of second through holes are arranged spaced apart in the circumferential direction of the cylinder; a combustion chamber cover, the combustion chamber cover is disposed on the first opening and defines a combustion chamber together with the cylinder, the combustion chamber cover has a cover body and a cover enclosure, the cover enclosure is connected to the outer circumference of the cover body and surrounds the cover body, the cover enclosure is provided with a spark plug inner mounting hole; an evaporator A net, the evaporation net is arranged in the combustion chamber; a combustion chamber shell, one side of the combustion chamber shell has a second open mouth and the other side has a third through hole extending axially therethrough, wherein the combustion chamber shell is sleeved on the outside of the cylinder body and a preset gap is provided between the inner wall of the combustion chamber shell and the outer wall of the cylinder body, the projection of the first through hole on the plane where the third through hole is located falls within the range of the third through hole, the combustion chamber is connected to the first heating chamber through the first through hole and the third through hole, and the cylinder body and the combustion chamber cover are located between the combustion mechanism housing and the combustion chamber shell.

According to some embodiments of the present invention, a third flange is provided on the upper edge of the side wall of the combustion chamber casing, and the third flange is configured to bend and extend axially upward along the combustion chamber casing and radially outward along the combustion chamber casing, and both sides of the third flange are respectively connected to the combustion mechanism housing and the burner casing.

According to some embodiments of the present invention, the combustion mechanism housing is flush with the outer peripheral wall of the burner casing.

According to some embodiments of the present invention, a spark plug outer mounting hole is provided at a position of the combustion mechanism housing corresponding to the spark plug inner mounting hole, and also includes a spark plug, which is sequentially inserted into the spark plug outer mounting hole and the spark plug inner mounting hole so as to be at least partially located in the combustion chamber.

According to some embodiments of the present invention, the combustion chamber cover is provided with a fuel pipe, and a side of the combustion mechanism housing opposite to its open side is provided with an oil inlet hole, and the fuel pipe passes through the oil inlet hole and is connected to the oil tank of the steam atomizer.

According to some embodiments of the present invention, the exhaust pipe structure includes an exhaust pipe, the exhaust pipe having a connecting section connected to the burner inner shell, the axial direction of the connecting section intersecting with the axial direction of the burner inner shell on the same projection plane, the exhaust pipe also includes: a necking section, one end of the necking section is connected to the connecting section; an elbow section, one end of the elbow section is connected to the other end of the necking section and the other end of the elbow section is facing away from the combustion mechanism, wherein the radial size of the end of the necking section connected to the connecting section is larger than the radial size of the necking section and the necking section. The radial dimension of the other end connected to the elbow section.

According to some embodiments of the present invention, the burner inner shell has an outer protruding section protruding from the burner outer shell in the axial direction and the exhaust pipe structure is arranged on the outer protruding section, or the burner outer shell is provided with an avoidance portion, and the exhaust pipe structure passes through the avoidance portion.

According to some embodiments of the present invention, the burner casing is a piece of heat-insulating material, or the burner casing is provided with a plurality of heat dissipation holes arranged along its circumference.

According to some embodiments of the present invention, the air supply mechanism is an axial flow fan assembly or a volute fan assembly, and the air supply mechanism is configured to form a wind pressure of not less than 800Pa in the air inlet channel.

According to some embodiments of the present invention, the axial flow fan assembly includes: an air inlet duct, a mounting seat is provided at one end of the air inlet duct, a ventilation gap is provided between the mounting seat and the inner wall of the air inlet duct, and the ventilation gap forms the air supply port; a driving mechanism, the driving mechanism is installed on the mounting seat and the driving mechanism has a rotating shaft extending along the axial direction of the air inlet duct; an axial flow fan, the axial flow fan is rotatably provided at the other end of the air inlet duct and is connected to the rotating shaft to rotate under the drive of the driving mechanism, wherein the operating wind pressure in the air inlet duct is not less than 800 Pa.

According to some embodiments of the present invention, the axial flow fan includes: a hub, which is connected to the rotating shaft; a plurality of vortex blades, which are arranged at intervals along the circumference of the hub and each of the vortex blades is located between the air inlet duct and the hub.

According to some embodiments of the present invention, the volute fan assembly includes: a volute, a first installation cavity and a second installation cavity spaced apart from each other are defined in the volute, the volute has an air inlet and an air supply port connected to the second installation cavity; a corrosion-resistant high-pressure component, the corrosion-resistant high-pressure component includes a driving mechanism and an impeller, the driving mechanism is arranged in the first installation cavity, the impeller is arranged in the second installation cavity, the driving shaft of the driving mechanism extends from the first installation cavity into the second installation cavity and is connected to the impeller to drive the impeller to suck the airflow from the air inlet into the second installation cavity, and introduce the airflow into the air inlet channel through the air supply port.

According to some embodiments of the present invention, a filter is further included, and the filter is arranged in the air inlet path of the air supply mechanism and is located upstream of the air inlet channel.

According to some embodiments of the present invention, the air supply mechanism is an axial flow fan assembly, and the filter includes: a connecting plate, which is connected to one side of the combustion mechanism housing, and a connecting plate through hole is provided in the middle of the connecting plate, and the position of the connecting plate through hole corresponds to the position of the air inlet channel; a tube body, the tube body is passed through the connecting plate through hole, and the end of the air inlet pipe facing away from the mounting seat is passed through the tube body; a fixing plate, the fixing plate and the connecting plate are spaced apart in the axial direction of the tube body and the fixing plate is connected to the lower end surface of the tube body; a plurality of filter plates, and the plurality of filter plates are spaced apart along the outer peripheral side of the tube body and arranged between the connecting plate and the fixing plate, wherein the axial flow fan is spaced apart from the fixing plate in the axial direction.

According to some embodiments of the present invention, the combustion mechanism has a fuel pipe, and a side of the combustion mechanism housing opposite to its open side is provided with an oil inlet hole for the fuel pipe to pass through, and also includes a box assembly and a nozzle, the box assembly includes: a fuel tank, which is connected to the combustion mechanism through the fuel pipe; an auxiliary agent box, which is connected to the inlet end of the external heating pipe; and a medicine box, wherein the outlets of the medicine box and the internal heating pipe are both connected to the nozzle.

According to some embodiments of the present invention, the box assembly further includes: a box shell, the box shell defines a box structure with an opening on one side, the box structure defines a first accommodating cavity and one side of the box structure has an escape opening connected to the first accommodating cavity, and one side wall of the box structure is recessed inward to form a second accommodating cavity; the auxiliary agent box has an auxiliary agent tube, the auxiliary agent box is installed in the first accommodating cavity and the auxiliary agent tube passes through the box shell through the escape opening the oil tank and the medicine box are installed side by side on the top of the box structure in the horizontal direction and are respectively locked and connected with the box structure.

According to some embodiments of the present invention, the side wall of one of the oil tank and the medicine box has a protrusion and the side wall of the other has a recessed portion that cooperates with the protrusion, and when the oil tank and the medicine box are installed on the top of the box shell, the protrusion and the recessed portion cooperate with each other.

According to some embodiments of the present invention, the bottom of the oil tank and the bottom of the medicine box are respectively provided with locking buckles connected to the box shell, and the additive box is provided with a calcium and magnesium ion filter, wherein the additive flows out after being filtered through the calcium and magnesium ion filters.

According to some embodiments of the present invention, the steam sprayer includes a spark plug, the combustion mechanism has an inner spark plug mounting hole, the combustion mechanism housing has an outer spark plug mounting hole corresponding to the position of the inner spark plug mounting hole, the spark plug is sequentially inserted into the outer spark plug mounting hole and the inner spark plug mounting hole so as to be at least partially located in the combustion chamber of the combustion mechanism, the steam sprayer also includes a power supply, a pump body and a control system, the power supply, the pump body and the control system are all arranged in the second accommodating cavity, the power supply is respectively connected to the pump body, the air supply mechanism and the spark plug, and the control system is respectively connected to the spark plug, the air supply mechanism and the pump body to control the spark plug, the air supply mechanism and the pump body.

According to some embodiments of the present invention, the fuel tank is provided with a fuel pump, the control system includes an electronic injection ignition module and a solenoid valve, the oil outlet end of the fuel pump is connected to the fuel pipe through the solenoid valve, wherein the electronic injection ignition module is respectively connected to the spark plug, the air supply mechanism, and the solenoid valve to control the ignition stage and the working stage of the steam sprayer.

According to some embodiments of the present invention, when the steam sprayer is in the ignition stage, the electronic injection ignition module controls the solenoid valve to be in a first opening and the air supply mechanism to be in a first wind pressure or a first wind speed; when the steam sprayer is in the working stage, the electronic injection ignition module controls the solenoid valve to be in a second opening and the air supply mechanism to be in a second wind pressure or a first wind speed, wherein the first opening is greater than the second opening and the first wind pressure is less than the second wind pressure, or the first opening is greater than the second opening and the first wind speed is less than the second wind speed.

According to some embodiments of the present invention, the box assembly further includes a cover, and the cover is detachably disposed on the second accommodating cavity.

Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

FIG1 is an exploded view of a steam sprayer according to an embodiment of the present invention;

FIG2 is a partial cross-sectional view of a steam sprayer according to an embodiment of the present invention;

FIG3 is a partial schematic diagram of a steam sprayer according to an embodiment of the present invention;

FIG4 is another partial schematic diagram of a steam sprayer according to an embodiment of the present invention;

5 is a cross-sectional view of a combustion mechanism of a steam atomizer according to an embodiment of the present invention;

6 is a schematic diagram of a cylinder of a combustion mechanism according to an embodiment of the present invention;

7 is a schematic diagram of a combustion chamber cover of a combustion mechanism according to an embodiment of the present invention;

8 is a schematic diagram of a combustion chamber housing of a combustion mechanism according to one embodiment of the present invention;

9 is a perspective view of a box assembly of a steam sprayer according to one embodiment of the present invention;

10 is a rear view of a tank assembly of a steam sprayer according to one embodiment of the present invention;

11 is a side view of a tank assembly of a steam sprayer according to one embodiment of the present invention;

FIG12 is a partial schematic diagram of a burner structure of a steam atomizer according to an embodiment of the present invention;

13 is a schematic diagram of an axial flow fan assembly of a steam sprayer according to an embodiment of the present invention;

14 is a partial cross-sectional view of an axial flow fan assembly of a steam atomizer according to an embodiment of the present invention;

FIG. 15 is a schematic diagram of the assembly of an axial flow fan assembly and a filter of a steam sprayer according to an embodiment of the present invention.

Reference numerals:
Steam sprayer 100;
Air supply mechanism 10; air supply port 11; volute 12; air inlet 121; corrosion-resistant high-pressure component 13; driving mechanism 14;
Rotating shaft 141; air inlet pipe 15; hub 161; vortex blade 162; filter 17; connecting plate 171;
Fixed plate 172; Tube body 173; Filter plate 174; Mounting seat 18;
Combustion mechanism assembly 20; combustion mechanism housing 21; combustion mechanism 22;
Cylinder 221; first through hole 2211; second through hole 2212; first open opening 2213; first flange 2214;
Combustion chamber 2215; combustion chamber cover 222; cover body 2221; fuel pipe 22211; cover enclosure 2222;
Spark plug inner mounting hole 22221; second open opening 2223; second flange 2224; combustion chamber housing 223;
A third through hole 2231; a third flange 2232;
Burner structure 30; burner inner shell 31; first heating chamber 311; burner outer shell 32; first gap 321;
Heating tube 33; inner heating tube 331; outer heating tube 332; straight tube section 3311; coil section 3312; inlet end 3321;
Inlet 33111; outlet 33121; cover 34;
Exhaust pipe structure 40; connecting section 41; necking section 42; elbow section 43; exhaust port 431; second heating chamber 44;
Spray head 50; box assembly 60; box shell 61; medicine box 62; oil tank 63; auxiliary agent box 64; first accommodating chamber 611;
The second accommodating chamber 612; the avoidance opening 613; the protruding portion 621; the fuel pump 631; the recessed portion 632;
Calcium and magnesium ion filter 641; solenoid valve 633; power supply 71; pump body 72; control system 73; handle 80;
Spark plug 90;

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

The following describes a steam sprayer 100 according to an embodiment of the present invention with reference to the accompanying drawings.

As shown in FIGS. 1 to 12 , a steam sprayer 100 according to an embodiment of the present invention includes an air supply mechanism 10 , a combustion mechanism assembly 20 , a burner structure 30 , and an exhaust pipe structure 40 .

The air supply mechanism 10 has an air supply port 11, and the combustion mechanism assembly 20 includes a combustion mechanism housing 21 and a combustion mechanism 22. One side of the combustion mechanism housing 21 has an air inlet channel, and the other side is open. As shown in FIG. 2, the left side of the combustion mechanism housing 21 has an air inlet channel, which is connected to the air supply port 11. The right side of the combustion mechanism housing 21 is open, and at least part (such as the left part) of the combustion mechanism 22 is inserted into the open side. The air supply mechanism 10 is configured to introduce air into the combustion mechanism assembly 20. flow, thus forming a vortex airflow, enhancing the full mixing and combustion of fuel and airflow;

The burner structure 30 includes a burner inner shell 31 and a burner outer shell 32. The burner outer shell 32 is arranged coaxially or parallel to the burner inner shell 31. Preferably, the burner outer shell 32 is arranged coaxially with the burner inner shell 31, so as to ensure that the first gap 321 formed therebetween is uniform in all directions, which is conducive to overall assembly.

Further, the burner inner shell 31 can be formed into a cylinder 221 structure, the burner inner shell 31 defines a first heating chamber 311, the other side of the combustion mechanism 22 is arranged in the burner outer shell 32, and one side of the burner inner shell 31 is connected to the other side of the combustion mechanism 22. For example, as shown in FIG. 2 , the right side of the combustion mechanism 22 is arranged in the burner outer shell 32, and the left end surface of the burner inner shell 31 is connected to the right end surface of the combustion mechanism 22;

The exhaust pipe structure 40 is arranged on the other side of the burner inner shell 31 axially away from the combustion mechanism 22, such as the other side adjacent to the burner inner shell 31 (the right side of the burner inner shell 31 as shown in Figure 2). A second heating chamber 44 is defined in the exhaust pipe structure 40, and the first heating chamber 311 is connected to the second heating chamber 44, so that after the oil and gas mixture generated by the combustion chamber 2215 of the combustion mechanism 22 is ignited, the further generated smoke can enter the second heating chamber 44 from the combustion chamber 2215 and the first heating chamber 311 in sequence. The exhaust pipe structure 40 has an exhaust port 431, which is connected to the second heating chamber 44, and the opening direction of the exhaust port 431 is away from the combustion mechanism 22.

It should be noted that the opening direction of the exhaust port 431 is away from the combustion mechanism 22, which includes that the normal direction of the cross section of the exhaust port 431 is parallel to the axial direction of the burner inner shell 31, that the normal direction of the cross section of the exhaust port 431 forms a certain acute angle with the axial direction of the burner inner shell 31 in the same projection plane, and that the normal direction of the cross section of the exhaust port 431 is orthogonal to the axial direction of the burner inner shell 31.

Therefore, according to the steam sprayer 100 of the embodiment of the present invention, an exhaust pipe structure 40 is provided on the burner inner shell 31, and the second heating chamber 44 of the exhaust pipe structure 40 is connected to the first heating chamber 311 of the burner inner shell 31, and the opening direction of the exhaust port 431 is opposite to the combustion mechanism 22. In the related art, the solution of directly providing the flue gas exhaust port 431 for up and down exhaust on the burner inner shell 31 usually has a greater risk of flammability and explosion. In comparison, by providing the exhaust pipe structure 40, high-temperature flue gas, flames, etc. can be guided out, reducing the risk of flammability and explosion, greatly improving safety and reliability. At the same time, through the arrangement of the exhaust pipe, a certain buffering effect can be played on the flue gas to a certain extent, thereby achieving a noise reduction effect.

As shown in Figures 1-4 and 12, the burner structure 30 includes a heating tube 33, and the heating tube 33 includes an inner heating tube 331. The inner heating tube 331 is arranged in the first heating chamber 311. The inlet 33111 and the outlet 33121 of the inner heating tube 331 extend out of the first heating chamber 311 along the side of the burner inner shell 31 away from the combustion mechanism 22, that is, the auxiliary agent enters the first heating chamber 311 from outside the first heating chamber 311 through the inlet 33111 of the inner heating tube 331, and then is discharged from the first heating chamber 311 to the outside of the first heating chamber 311 through the outlet 33121 of the inner heating tube 331. In this process, the oil-gas mixture formed by the mixture of the fuel oil and the air flow is ignited in the first heating chamber 311, thereby heating the auxiliary agent passing through the inner heating tube 331 in the first heating chamber 311;

Further, as shown in Figure 2, an external heating tube 332 is provided in the first gap 321, and the external heating tube 332 forms a residual heat chamber. The inlet 33111 of the external heating tube 332 is connected to the auxiliary agent box 64 of the steam sprayer 100, and the outlet 33121 of the external heating tube 332 is connected to the inlet 33111 of the internal heating tube 331, that is, the auxiliary agent in the auxiliary agent box 64 first enters the external heating tube 332, and the residual heat chamber in the external heating tube 332 is preheated by the residual heat of the first combustion chamber 2215, and then enters the internal heating tube 331 from the external heating tube 332, is further heated in the first heating chamber 311, and is finally discharged from the internal heating tube 331, wherein the burner housing 32 can play a protective and scalding prevention role to prevent users from being scalded by direct contact with the external heating tube 332, and the external heating tube 332 can simplify the sealing structure and reduce the possibility of auxiliary agent leakage.

Therefore, the burner structure 30 of the steam atomizer 100 according to the embodiment of the present invention is formed by An external heating tube 332 is arranged inside 321, and the external heating tube 332 forms a waste heat cavity, so that the additive is preheated by utilizing the waste heat in the first heating chamber 311, and then further heated in the internal heating tube 331, thereby effectively improving the utilization efficiency of the fuel, saving fuel, and then heating the additive uniformly. In addition, the double-layer shell structure can also further improve safety and reliability.

As shown in Figures 2 to 4 and 12, in some embodiments of the present invention, the external heating tube 332 is attached to the outer wall of the burner inner shell 31 along the axial direction thereof, so that the heat in the first heating chamber 311 of the burner inner shell 31 is conducted to the external heating tube 332 through the outer wall of the burner inner shell 31, and then the additive in the external heating tube 332 is heated, thereby improving the thermal efficiency of the fuel and achieving a fuel-saving effect. At the same time, due to the full combustion of the fuel, smoke emissions can be further reduced, reducing pollution.

In some examples, as shown in Figures 2-4, the external heating tube 332 forms an outer coil, which is spirally attached to the outer wall of the burner along the axial direction of the burner inner shell 31, thereby increasing the flow time of the additive in the outer coil through the spiral structure, further improving the preheating effect.

Optionally, in order to ensure the flow time of the auxiliary agent in the outer coil, improve the preheating effect, and improve the heat conduction efficiency of the first heating chamber 311, the distance between any two adjacent spiral coils in the outer coil in the axial direction is not greater than 20mm, and the diameter of the outer coil is 4mm-6mm.

In other examples of the present invention, the external heating tube 332 is a heating flat tube, which is formed as a cylindrical hollow structure extending axially and is sleeved on the outer wall of the burner inner shell 31. Preferably, the heating flat tube with a cylindrical hollow structure is coaxial with the burner inner shell 31, so that the radial inner side of the cross-section of the heating flat tube is tightly fitted with the radial outer wall of the burner inner shell 31, thereby further improving the efficiency of heat conduction from the burner inner shell 31 to the heating flat tube. In addition, the use of a flat tube structure with a cylindrical hollow structure can also reduce the volume occupied by the external heating tube 332.

In some other examples of the present invention, in order to further reduce the volume occupied and simplify the assembly difficulty while ensuring the heat conduction efficiency, the external heating tube 332 can be a plurality of heating flat tubes, each of which is formed as an arc-shaped hollow structure extending axially, and the plurality of heating flat tubes are circumferentially attached to the outer wall of the burner inner shell 31. For example, the cross-section of each heating flat tube can be formed into a 90-degree arc, and four heating flat tubes are sequentially attached to the outer wall of the burner inner shell 31 along the circumference of the burner inner shell 31 to cover the burner inner shell 31 inside.

Furthermore, in some examples, the external heating tube 332 is a plurality of heating flat tubes, and the spacing between any two adjacent heating flat tubes in the circumferential direction of the burner inner shell 31 is no more than 10 mm, thereby facilitating assembly while ensuring conduction efficiency.

In some examples, in order to facilitate the sealing of the waste heat chamber and improve the appearance, the cover plate 34 has an outer protrusion 621 protruding from the burner inner shell 31 in the radial direction, and the difference in size between the combustion mechanism housing 21 in the radial direction and the burner inner shell 31 in the radial direction is equal to the protruding size of the axially corresponding outer protrusion 621 in the radial direction.

In some examples, in order to facilitate the sealing of the residual heat chamber and improve the appearance, the cover plate 34 has an outer protrusion 621 protruding from the burner inner shell 31 in the radial direction, and the radial outer side of the burner outer shell 32 is flush with the radial outer side of the combustion mechanism housing 21.

As shown in Figures 2 to 4, in some embodiments of the present invention, the exhaust pipe structure 40 includes an exhaust pipe, and the exhaust pipe has a connecting section 41 connected to the burner inner shell 31. The axial direction of the connecting section 41 intersects with the axial direction of the burner inner shell 31 on the same projection plane. For example, the projections of the two on the plane where the axis of the connecting section 41 is located may be orthogonal, or the projections of the two on the plane where the axis of the connecting section 41 is located may form a certain angle, and the angle is facing away from the side of the combustion mechanism 22. Thus, the second combustion chamber 2215 is connected to the first combustion chamber 2215 through the connecting section 41, and then the smoke and flame in the first combustion chamber 2215 are guided out according to a preset path. At the same time, compared with the related art in which the exhaust port 431 is directly set on the burner inner shell 31, the existence of the connecting section 41 can prevent the smoke and flame from directly flowing back to the first heating chamber 311, thereby reducing Low risk of burns.

As shown in Figures 2 to 4, in a further example of the present invention, the exhaust pipe also includes a necking section 42 and an elbow section 43, one end of the necking section 42 is connected to the connecting section 41, one end of the elbow section 43 is connected to the other end of the necking section 42, and the other end of the elbow section 43 faces away from the combustion mechanism 22 and forms an exhaust port 431, wherein the radial dimension of the end of the necking section 42 connected to the connecting section 41 is greater than the radial dimension of the end connected to the elbow section 43, so that the necking section 42 is used to further buffer the flue gas and other waste gases, thereby reducing the discharge of waste gases and reducing noise.

As shown in Figure 2, in some examples, in order to further improve the buffering effect of exhaust gas and reduce the obstruction during the flow of exhaust gas, the inner diameter of one end of the necking section 42 is equal to the inner diameter of the connecting section 41, and the inner diameter of the other end of the necking section 42 is equal to the inner diameter of one end of the elbow section 43.

Preferably, the outer diameter of one end of the necking section 42 is equal to the outer diameter of the connecting section 41 , and the outer diameter of the other end of the necking section 42 is equal to the outer diameter of one end of the elbow section 43 , thereby ensuring the overall appearance of the steam sprayer 100 .

As shown in Figures 2 to 4, in some examples, the axial direction of the other end of the elbow section 43 is parallel to the axial direction of the burner inner shell 31, so that the exhaust port 431 faces the side opposite to the combustion mechanism 22, further avoiding possible burns to the operator caused by smoke, flames, etc.

In some embodiments, in order to improve the noise reduction effect of the exhaust pipe structure 40, the exhaust pipe structure 40 also includes a perforated pipe and a high-temperature resistant sound insulation layer wrapped around the outer circumference of the perforated pipe. The perforated pipe is arranged in the exhaust pipe. For example, it can be arranged coaxially with the exhaust pipe. A gap is formed between the perforated pipe and the exhaust pipe in the radial direction, and the high-temperature resistant sound insulation layer is arranged in the gap.

In some examples, the high temperature resistant sound insulation layer can be porous glass fiber, so that the exhaust gas forms a vortex and enters the glass fiber through the holes of the perforated tube. The glass fiber absorbs the pressure wave while not hindering the exhaust gas discharge. This further reduces the noise while ensuring the normal exhaust gas discharge.

In other examples, the exhaust pipe structure 40 includes a plurality of baffles, which are arranged in the exhaust pipe at intervals along the extension direction of the exhaust pipe, so that the airflow is reflected by multiple baffles inside, and finally the shock wave energy is consumed and comes out from the outlet 33121, thereby reducing noise.

In some examples, the external heating tube 332 includes a first external heating tube and a second external heating tube, the second external heating tube is connected to the first external heating tube, the first external heating tube is attached to the outer wall of the burner inner shell 31 along the axial direction of the burner inner shell, and the second external heating tube is attached to the outer wall of the exhaust pipe along the axial direction of the exhaust pipe. In addition to using the heat conduction of the first heating chamber 311 to heat the additive, the heat conduction of the second heating chamber 44 is further used for heating, thereby further improving the thermal efficiency and saving fuel consumption.

In some examples, the second outer heating tube is connected to the inner heating tube 331 via an adapter, and the adapter is made of high temperature resistant metal.

In some examples, the second external heating tube is an outer coil and is spirally attached to the outer wall of the exhaust pipe along the axial direction of the exhaust pipe, or the second external heating tube is a heating flat tube and is attached to the outer wall of the exhaust pipe along the axial direction of the exhaust pipe, thereby utilizing the outer coil structure to increase the flow time of the additive through the attached exhaust pipe, or utilizing the heating flat tube structure to increase the contact area between the additive and the outer wall of the exhaust pipe, thereby further utilizing waste heat and improving thermal efficiency.

In some examples, the second outer coil is spirally attached to the outer wall of the exhaust pipe along the axial direction of the exhaust pipe. For example, the second outer coil can be spirally attached to the connecting section 41 , or the second outer coil can also be spirally attached to the connecting section 41 and the necking section 42 .

Preferably, the first external heating tube and the second external heating tube are integrally formed, thereby reducing connecting components and simplifying the overall structure.

In some embodiments of the present invention, as shown in FIG. 2 and FIG. 12, the inner heating pipe 331 is an inner coil assembly, which includes a heating straight pipe section 3311 and a coil section 3312 connected thereto, the heating straight pipe section 3311 extends from the outside of the first heating chamber 311 to the inside along the axial direction of the burner inner shell 31, the coil section 3312 spirally extends from the inside of the first heating chamber 311 to the outside along the axial direction of the heating straight pipe section 3311, and the heating straight pipe section 3311 is wrapped inside the coil section 3312. Therefore, the flow time of the auxiliary agent in the first combustion chamber 2215 can be further increased by the structural design of the heating straight pipe section 3311 and the coil section 3312. Moreover, by adopting this design, the inlet 33111 and the outlet 33121 of the inner coil assembly can be arranged on the same side, utilizing the overall arrangement of the structure.

As shown in Figures 2 and 12, in some examples, in order to facilitate the connection between the nozzle 50 and the coil section 3312, the coil section 3312 has a coil straight section, which is located at the end of the coil section 3312 away from the combustion mechanism 22 and extends from the inside of the first heating chamber 311 to the outside thereof. The heating straight section 3311 is connected to the residual heat chamber and the coil straight section is connected to the nozzle 50.

Further, as shown in FIG. 12 , in some examples, the inner coil may include a heating straight pipe section 3311 and a coil section 3312 connected thereto, wherein the heating straight pipe section 3311 extends from the outside of the first heating chamber 311 to the inside along the axial direction of the burner inner shell 31, and the coil section 3312 spirally extends from the inside of the first heating chamber 311 to the outside along the axial direction of the heating straight pipe section 3311, and the heating straight pipe section 3311 is wrapped inside the coil section 3312. Thus, the flow time of the additive in the first combustion chamber 2215 can be further increased by the structural design of the heating straight pipe section 3311 and the coil section 3312, and the inlet 33111 and the outlet 33121 of the inner coil assembly can be arranged on the same side by using the overall arrangement of the structure.

As shown in FIG. 12 , preferably, in order to allow the additive in the inner heating tube 331 to be heated at all angles and improve heating uniformity, the gap in the axial direction between any two adjacent spiral coils of the coil section 3312 is not less than 10 mm.

As shown in FIG12 , in order to simplify the structure, reduce the number of components, and at the same time improve the degree of assembly integration, the heating straight pipe section 3311 and the coil section 3312 are an integrally formed structure.

Optionally, in some embodiments of the present invention, in order to further avoid energy loss and improve heat utilization, the burner structure 30 also includes a thermal insulation layer, and at least one of the burner inner shell 31 and the burner outer shell 32 has a thermal insulation layer. For example, the thermal insulation layer can be located on the inner wall of the burner inner shell 31, or the thermal insulation layer can also be located on the inner wall of the burner outer shell 32.

As shown in FIGS. 5 to 8 , in some embodiments of the present invention, the combustion mechanism 22 includes a cylinder 221 , a combustion chamber cover 222 , an evaporation net (not shown), and a combustion chamber shell 223 .

The cylinder 221 has a first open opening 2213 on one side and a first through hole 2211 penetrating along its axial direction on the other side. For example, as shown in FIG. 5 , the upper side of the cylinder 221 has a first open opening 2213, and the lower side has a first through hole 2211. The peripheral wall of the cylinder 221 has a plurality of second through holes 2212, which penetrate the wall thickness of the cylinder 221, and the plurality of second through holes 2212 are spaced apart and arranged at the upper part of the cylinder 221 along the circumferential direction of the cylinder 221.

The combustion chamber cover 222 is covered on the first opening 2213 of the cylinder 221 to define a combustion chamber 2215 together with the cylinder 221. The combustion chamber cover 222 is provided with a spark plug inner mounting hole 22221. The evaporation net is arranged in the combustion chamber 2215, so as to increase the vaporization amount of the fuel entering the combustion chamber 2215. One side of the combustion chamber shell 223 (as shown in FIG. 5, the upper side of the combustion chamber shell 223) has a second opening 2223, and the other side of the combustion chamber shell 223 (as shown in FIG. 5, the lower side of the combustion chamber shell 223) has a third through hole 2231.

Furthermore, the combustion chamber shell 223 is sleeved on the outer side of the cylinder 221 , and a preset gap is provided between the inner wall of the combustion chamber shell 223 and the outer wall of the cylinder 221 , and the projection of the first through hole 2211 on the plane where the third through hole 2231 is located falls within the range of the third through hole 2231 .

Thus, according to the steam sprayer 100 of the embodiment of the present invention, the combustion chamber 2215 is defined by the barrel 221 and the combustion chamber cover 222, and the second through hole 2212 communicating with the combustion chamber 2215 is provided in the barrel 221, and the combustion chamber housing 222 is 223 is sleeved on the outside of the cylinder 221 and a preset gap is provided between the cylinder 221 and the combustion chamber shell 223, so that the preset gap between the combustion chamber shell 223 and the cylinder 221 and the setting of multiple circumferentially arranged second through holes 2212 on the cylinder 221 can make the airflow introduced through the air supply mechanism 10 of the steam sprayer 100 form a vortex airflow in the combustion chamber 2215. At the same time, the first through hole 2211 is located in the plane where the third through hole 2231 of the combustion chamber shell 223 is located and falls within the range of the third through hole 2231, and the combustion mechanism 22 is connected as a whole to the combustion mechanism shell 21 and the burner structure 30 by using the combustion chamber shell 223 structure, so that the combustion mechanism 22 can be conveniently installed as a whole on the combustion mechanism shell 21 of the evaporative sprayer without affecting the oil-gas mixture from passing through the first through hole 2211 and the third through hole 2231 into the burner structure 30 of the evaporative sprayer, thereby reducing the overall volume occupancy.

As shown in Figures 5 to 8, in some examples of the present invention, the bottom of the cylinder 221 has a cylinder 221 cover plate 34, and the first through hole 2211 is provided in the middle of the cylinder 221 cover plate 34, so as to facilitate the vortex oil-gas mixture in the combustion chamber 2215 to be introduced into the burner inner shell 31 of the burner structure 30 through the first through hole 2211 and the third through hole 2231, thereby heating the inner coil in the first heating chamber 311 of the burner inner shell 31.

As shown in Figures 5 to 8, in some examples of the present invention, the combustion chamber cover 222 includes a cover body 2221 and a cover enclosure 2222, the cover enclosure 2222 is connected to the outer periphery of the cover body 2221 and is arranged around the cover body 2221. For example, in Figure 4, the cover enclosure 2222 is arranged on the lower side of the outer periphery of the cover body 2221, and the cover enclosure 2222 is also provided with a spark plug inner mounting hole 22221. When the combustion mechanism 22 is assembled in the combustion mechanism housing 21 of the evaporative sprayer, the spark plug inner mounting hole 22221 on the cover enclosure 2222 corresponds to the spark plug outer mounting hole on the combustion mechanism housing 21, thereby facilitating the spark plug 90 to pass through the spark plug outer mounting hole and the spark plug inner mounting hole 22221 in sequence and extend into the combustion chamber 2215.

As shown in Figures 5 to 8, in some embodiments of the present invention, the upper edge of the side wall of the cylinder 221 has a first flange 2214, and the first flange 2214 is configured to bend and extend axially upward and radially outward along the cylinder 221. Preferably, the first flange 2214 extends axially upward and radially outward along the cylinder 221, and has an arc-shaped transition at the bend of the first flange 2214. Similarly, the lower edge of the side wall of the cover plate 2222 is provided with a second flange 2224, and the second flange 2224 is configured to bend and extend axially downward and radially outward along the cover plate 2222. Preferably, the second flange 2224 extends axially downward and radially outward along the cover plate 2222, and has an arc-shaped transition at the bend of the second flange 2224, thereby facilitating welding between the combustion chamber cover 222 and the cylinder 221 and ensuring the airtightness and reliability of the connection between the two.

As shown in Figures 5 to 8, in some examples, the other side of the cylinder 221 (such as the lower side of the cylinder 221 in Figure 1) is connected to the other side of the outside of the combustion chamber 2215 (such as the lower side of the combustion chamber casing 223 in Figure 5), and the two are coaxially arranged. In this way, on the one hand, the uniformity of the preset gap formed between the two in the circumferential direction is utilized, which is more conducive to the formation of vortex airflow. On the other hand, it is also conducive to the connection between the first through hole 2211 and the third through hole 2231, so that the vortex mixture can pass through the first through hole 2211 and the third through hole 2231 from the combustion chamber 2215 into the first heating chamber 311 of the burner structure 30.

As shown in FIG. 5 , in some examples, the combustion chamber housing 223 has a housing cover plate 34 , and the third through hole 2231 is disposed in the middle of the housing cover plate 34 , so as to facilitate the connection between the combustion chamber housing 223 and the cylinder 221 .

Preferably, in some examples, as shown in FIG. 5 , the first through hole 2211 and the third through hole 2231 are coaxially arranged and equal in size, so that the passage of the vortex oil-gas mixture can be ensured, and the remaining space on the other side of the combustion chamber casing 223 and the remaining space on the other side of the cylinder 221 can be utilized to achieve a close connection between the two.

In other embodiments of the present invention, the peripheral wall of the cover plate 2222 is provided with a plurality of fourth through holes of the through-device, and the plurality of fourth through holes are arranged at intervals along the circumferential direction of the cover plate 2222, so that the airflow introduced by the air supply mechanism 10 further passes through the fourth through holes, the preset gaps and the second through holes 2212 into the combustion chamber 2215 to form a vortex airflow, thereby facilitating the full mixing of oil and gas.

As shown in Figures 5 to 8, in some embodiments, a third flange 2232 is provided on the upper edge of the side wall of the combustion chamber casing 223. The third flange 2232 is configured to bend and extend axially upward and radially outward along the combustion chamber casing 223. Preferably, the third flange 2232 extends axially upward and radially outward along the combustion chamber casing 223, and smoothly transitions at the bend, so that the plane where the edge of the third flange 2232 lies is perpendicular to the axial direction of the combustion chamber casing 223, thereby facilitating the connection between the combustion chamber casing 223 and the combustion mechanism housing 21 and the burner casing 32.

Preferably, as shown in Figure 5, the preset gap is 5mm-15mm. When the preset gap is less than 5mm, it is not conducive for the airflow introduced by the air supply mechanism 10 to enter the combustion chamber 2215 through the preset gap and the second through hole 2212 and form a vortex. When the preset gap is greater than 15mm, the space of the combustion chamber 2215 is relatively small, which will reduce the capacity of the oil-gas mixture in the combustion chamber 2215 and is not conducive to the formation of a vortex airflow.

As shown in FIG. 5 , in some examples, the cover body 2221 has a fuel pipe 22211 connected to the combustion chamber 2215 , and the fuel in the fuel tank 63 can be introduced into the combustion chamber 2215 through the fuel pipe 22211 .

As shown in FIG5 , in some examples, the combustion chamber casing 223 is formed as a whole into a cylindrical structure, and the cross-section of the third flange 2232 thereof forms a circular ring structure, which can further reduce the volume occupied and the overall weight of the equipment compared to the combustion mechanism 22 with a rectangular structure adopted in the related art.

As shown in Figures 1 and 2, in some embodiments of the present invention, in order to facilitate the assembly of the exhaust pipe structure 40, the burner inner shell 31 has an outer protruding section protruding from the burner outer shell 32 in the axial direction and the exhaust pipe structure 40 is arranged on the outer protruding section, or the burner outer shell 32 is provided with an avoidance portion, and the exhaust pipe structure 40 passes through the avoidance portion.

In some examples, in order to ensure the heat in the second heating chamber 44 and reduce heat loss, the burner casing 32 is made of insulating material. In other examples, in order to ensure the heat in the second heating chamber 44 is reduced while avoiding overheating of the burner casing 32, a plurality of heat dissipation holes arranged along the circumferential direction are provided in the burner casing 32.

As shown in Figures 1, 2 and 3, in some embodiments of the present invention, the air supply mechanism 10 is an axial flow fan assembly or a volute 12 fan assembly, and the air supply mechanism 10 is configured to form a wind pressure of not less than 800Pa in the air inlet channel. By setting the wind pressure in the air inlet channel, it is easier to form a vortex airflow in the combustion chamber 2215, thereby facilitating the full combustion of the oil-gas mixture and reducing exhaust gas emissions, and can also reduce noise while reducing exhaust gas emissions.

In some examples, as shown in Figures 13-15, the axial flow fan assembly includes: an air inlet duct 15, a driving mechanism 14 and an axial flow fan, the driving mechanism 14 can be a driving motor, a mounting seat 18 is provided at one end of the air inlet duct 15, the mounting seat 18 is roughly cylindrical in structure, and at least partially extends into the air inlet duct 15, a ventilation gap is provided between the mounting seat 18 and the inner wall of the air inlet duct 15, an air guide plate can be provided in the ventilation gap, and the ventilation gap forms an air supply port 11, the driving mechanism 14 is installed on the mounting seat 18 and the driving mechanism 14 has a rotating shaft 141 extending along the axial direction of the air inlet duct 15, the axial flow fan is rotatably provided at the other end of the air inlet duct 15 and is connected to the rotating shaft 141 to rotate under the drive of the driving mechanism 14, wherein the operating wind pressure in the air inlet duct 15 is not less than 800pa.

Furthermore, the axial flow fan includes: a hub 161 and a plurality of vortex blades 162 , the hub 161 is connected to the rotating shaft 141 , the plurality of vortex blades 162 are arranged at intervals along the circumference of the hub 161 and each vortex blade 162 is located between the air inlet duct 15 and the hub 161 .

Therefore, by using an axial flow fan assembly, the drive mechanism 14 can be set at the rear end of the mounting seat 18, thereby reducing the direct effect of the suction airflow to a certain extent. On the other hand, the axial flow wind direction can also facilitate the connection between the air supply mechanism 10 and the combustion mechanism housing 21, reducing the volume occupancy.

As shown in Figures 1 to 4, in other embodiments of the present invention, the volute 12 fan assembly includes a volute 12 and a corrosion-resistant high-pressure assembly 13, the corrosion-resistant high-pressure assembly includes a drive mechanism 14 and an impeller (not shown), the volute 12 defines a first installation cavity and a second installation cavity spaced apart from each other, the volute 12 has an air inlet 121 and an air supply port 11 connected to the second installation cavity, and the drive mechanism 14 is arranged in the first installation cavity, and the impeller is arranged in the second installation cavity. The driving shaft of the driving mechanism 14 extends from the first installation cavity into the second installation cavity and is connected to the impeller to drive the impeller to suck the airflow from the air inlet 121 into the second installation cavity, and introduce it into the air inlet channel through the air supply port 11. Therefore, the driving mechanism 14 and the impeller can be separated by the spaced-apart first installation cavity and the second installation cavity, thereby avoiding the backflow of the airflow and the oil-gas mixture in the second installation cavity and the air supply port 11 and the air inlet channel connected thereto, which may cause corrosion and damage to the components.

As shown in Figures 13 to 15, in some embodiments, in order to reduce damage to components caused by impurities in the airflow, the air supply mechanism 10 also includes a filter 17, which is arranged in the air inlet path of the air supply mechanism 10 and located upstream of the air inlet channel.

As shown in Figure 15, in some examples, the air supply mechanism 10 is an axial flow fan assembly, and the filter 17 includes: a connecting plate 171, a tube body 173, a fixing plate 172 and a plurality of filter plates 174, the connecting plate 171 is connected to one side of the combustion mechanism housing 21, and a connecting plate 171 through hole is provided in the middle of the connecting plate 171, and the position of the connecting plate 171 through hole corresponds to the position of the air inlet channel; the tube body 173 is penetrated through the connecting plate 171 through hole, and one end of the air inlet pipe 15 facing away from the mounting seat 18 is penetrated in the tube body 173; the fixing plate 172 and the connecting plate 171 are spaced apart in the axial direction of the tube body 173 and the fixing plate 172 is connected to the lower end surface of the tube body 173; a plurality of filter plates 174 are spaced apart and arranged between the connecting plate 171 and the fixing plate 172 along the outer peripheral side of the tube body 173, wherein the axial flow fan is spaced apart from the fixing plate 172 in the axial direction.

As shown in Figures 1, 5, 9 to 11, in some embodiments of the present invention, the combustion mechanism 22 has a fuel pipe 22211. For example, as shown in Figure 5, the fuel pipe 22211 can be arranged on the combustion chamber cover 222 of the combustion mechanism 22. The combustion mechanism housing 21 has an oil inlet hole for the fuel pipe 22211 to pass through. The oil inlet hole is located on the other side of the combustion mechanism housing 21 opposite to its open side, such as the left side in Figure 2. The steam sprayer 100 also includes a box assembly 60 and a nozzle 50. The box assembly 60 includes an oil tank 63, an auxiliary agent box 64 and a medicine box 62. The oil tank 63 is connected to the combustion mechanism 22 through the fuel pipe 22211. The auxiliary agent box 64 is connected to the inlet end 3321 of the external heating pipe 332. The inlet end 3321 can extend in a radial direction through the peripheral wall of the burner shell 32. The outlet 33121 of the medicine box 62 and the internal heating pipe 331 are both connected to the nozzle 50, thereby forming a spray with medicine.

Optionally, a calcium and magnesium ion filter 641 is provided between the auxiliary agent box 64 and the external heating tube 332 , so that the calcium and magnesium ions in the auxiliary agent are filtered through the calcium and magnesium ion filter 641 , thereby reducing the calcium and magnesium precipitation in the steam sprayer 100 .

As shown in FIG. 1 to FIG. 3 , in some embodiments, a handle portion 80 is further included, and one end of the handle portion 80 is connected to the combustion mechanism housing, so as to facilitate the user to hold it.

As shown in Figures 1 and 9-11, in some examples, the box assembly 60 also includes a box shell 61, and the box shell 61 defines a box structure with an opening on one side, which roughly forms a rectangular structure. The box shell 61 can be composed of a bottom shell and a shell panel surrounding the edge of the bottom shell. The box structure defines a first accommodating chamber 611, and one side of the box structure has an avoidance opening 613, for example, in Figures 9 and 10, the avoidance opening 613 is located on the upper edge of the top side wall of the box shell 61, and when the auxiliary agent box 64 is installed in the first accommodating chamber 611, the auxiliary agent tube can pass through the first accommodating chamber 611 through the avoidance opening 613, and the oil tank 63 and the medicine box 62 are installed side by side in the horizontal direction above the box structure and are locked and connected to the box structure respectively. At the same time, the other side wall of the box structure adjacent to the side wall where the avoidance opening 613 is located is recessed inward to form a second accommodating chamber 612, which can accommodate structures such as the power supply 71, the pump body 72, and the control system 73.

As shown in Figures 9 to 11, in some examples, the side wall of one of the oil tank 63 and the medicine box 62 has a protrusion 621 and the side wall of the other has a recessed portion 632 that cooperates with the protrusion 621. When the oil tank 63 and the medicine box 62 are installed on the top of the box shell 61, the protrusion 621 and the recessed portion 632 cooperate with each other, thereby further increasing the connection tightness, ensuring the appearance effect, and improving the overall integration.

In some examples, the steam atomizer 100 includes a spark plug 90, and the combustion mechanism 22 has a spark plug inner mounting hole. 22221, the combustion mechanism housing 21 has a spark plug outer mounting hole corresponding to the position of the spark plug inner mounting hole 22221, and the spark plug 90 is sequentially inserted into the spark plug outer mounting hole and the spark plug inner mounting hole 22221 so as to be at least partially located in the combustion chamber 2215 of the combustion mechanism 22. The steam sprayer 100 also includes a power supply 71, a pump body 72 and a control system 73. The power supply 71, the pump body 72 and the control system 73 are all arranged in the second accommodating chamber 612. The power supply 71 is respectively connected to the pump body 72, the air supply mechanism 10 and the spark plug 90. The control system 73 is respectively connected to the spark plug 90, the air supply mechanism 10 and the pump body 72 to control the spark plug 90, the air supply mechanism 10 and the pump body 72. In this way, the installation of the medicine box 62, the auxiliary agent box 64 and the fuel tank 63 as well as the power supply 71, the pump body 72 and the control system 73 are respectively realized through the mutually isolated first accommodating chamber 611 and the second accommodating chamber 612, thereby improving the overall integration and avoiding accidental damage or leakage of the medicine box 62, the auxiliary agent box 64 and the fuel tank 63 into the power supply 71 and the control system 73, causing a greater risk of use.

In some embodiments, the fuel tank 63 is provided with a fuel pump 631, and the control system 73 includes an electronic injection ignition module and a solenoid valve 633. The oil outlet end of the fuel pump 631 is connected to the fuel pipe 22211 through the solenoid valve 633, wherein the electronic injection ignition module is respectively connected to the spark plug 90, the air supply mechanism 10, and the solenoid valve 633 to control the ignition stage and the working stage of the steam sprayer 100.

Further, when the steam sprayer 100 is in the ignition stage, the EFI ignition module controls the solenoid valve 633 to be at a first opening and the air supply mechanism 10 to be at a first wind pressure or a first wind speed;

When the steam sprayer 100 is in the working stage, the electronic spray ignition module controls the solenoid valve 633 to be at the second opening and the air supply mechanism 10 to be at the second wind pressure or the first wind speed.

The first opening is greater than the second opening and the first wind pressure is less than the second wind pressure, or the first opening is greater than the second opening and the first wind speed is less than the second wind speed.

Therefore, through the control of the electronic injection ignition module, during the ignition stage, the wind pressure or wind speed of the air supply mechanism 10 can be relatively low, the solenoid valve 633 has a larger opening, and the fuel supply is large, which is beneficial to the fuel supply in the combustion chamber 2215. Compared with the solution of using a plunger pump for constant oil injection in the related technology, the ignition speed and ignition power can be improved.

At the same time, since a relatively small opening of the solenoid valve 633 is used during the working stage, the fuel supply is reduced and the wind pressure or wind speed is increased, it is beneficial to fully mix the fuel and vortex airflow in the combustion chamber 2215, thereby improving combustion efficiency and reducing fuel consumption and exhaust emissions.

As shown in FIG. 1 and FIG. 9 , in some examples, in order to further improve the protection of components such as the power supply 71 and the control system 73 in the second accommodating cavity 612 , the box assembly 60 also includes a cover that is detachably covered on the second accommodating cavity 612 .

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

In the description of the present invention, "plurality" means two or more.

In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

The burner structure 30 of the steam atomizer 100 according to the embodiment of the present invention and other components and operations of the steam atomizer 100 are well known to those skilled in the art and will not be described in detail herein.

In the description of this specification, reference is made to the terms "one embodiment", "some embodiments", "illustrative embodiments", The description of "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

A steam sprayer, characterized in that it comprises:

An air supply mechanism, wherein the air supply mechanism has an air supply port;

A combustion mechanism assembly, the combustion mechanism assembly comprising a combustion mechanism housing and a combustion mechanism, the combustion mechanism housing having an air inlet passage on one side and being open on the other side, the air inlet passage being connected to the air supply port, and one side of the combustion mechanism being arranged through the open side of the combustion mechanism housing;

A burner structure, the burner structure comprising a burner inner shell and a burner outer shell arranged coaxially or parallel to the burner inner shell, a first heating chamber is defined in the burner shell, the other side of the combustion mechanism is penetrated in the burner outer shell and one side of the burner inner shell is connected to the other side of the combustion mechanism;

An exhaust pipe structure, wherein the exhaust pipe structure is arranged on the other side of the burner inner shell axially away from the combustion mechanism, a second heating chamber is defined in the exhaust pipe structure and the second heating chamber is connected to the first heating chamber, and the exhaust pipe structure has an exhaust port and the opening direction of the exhaust port is away from the combustion mechanism.
The steam sprayer according to claim 1, characterized in that the burner structure comprises:

An inner heating pipe, the inner heating pipe is arranged in the first heating chamber, and an inlet of the inner heating pipe and an outlet of the inner heating pipe extend out of the first heating chamber along the other side of the burner inner shell away from the combustion mechanism;

A first gap is formed between the burner outer shell and the burner inner shell, wherein an external heating tube is provided in the first gap, the external heating tube forms a waste heat chamber, the external heating tube has an inlet end extending out of the burner outer shell, and the outlet of the external heating tube is connected to the inlet of the inner heating tube.
The steam sprayer according to claim 2 is characterized in that the external heating tube is an outer coil, and the outer coil is spirally attached to the outer wall of the burner inner shell along the axial direction of the burner inner shell.
The steam sprayer according to claim 2 is characterized in that the external heating tube is a heating flat tube, which is formed as a cylindrical hollow structure extending along the axial direction of the burner inner shell, and the heating flat tube is sleeved on the outer wall of the burner inner shell and the radial inner side of the heating flat tube is tightly fitted with the outer wall of the burner inner shell, or the external heating tube is a plurality of heating flat tubes, each of which is formed as an arc-shaped hollow structure extending along the axial direction of the burner inner shell, and the plurality of heating flat tubes are attached to the outer wall of the burner inner shell along the circumferential direction of the burner inner shell.
The steam sprayer according to claim 1, characterized in that the combustion mechanism comprises:

A cylinder, one side of the cylinder has a first opening and the other side has a first through hole extending axially thereof, a peripheral wall of the cylinder has a plurality of second through holes extending through the thickness thereof, and the plurality of second through holes are spaced apart and arranged along the circumferential direction of the cylinder;

A combustion chamber cover, the combustion chamber cover is disposed at the first opening and defines a combustion chamber together with the cylinder, the combustion chamber cover comprises a cover body and a cover enclosure, the cover enclosure is connected to the outer circumference of the cover body and surrounds the cover body, and the cover enclosure is provided with a spark plug inner mounting hole;

An evaporation net, the evaporation net being arranged in the combustion chamber;

A combustion chamber housing, wherein one side of the combustion chamber housing has a second opening and the other side of the combustion chamber housing has a third through hole extending axially therethrough,

In which, the combustion chamber outer shell is sleeved on the outside of the cylinder and there is a preset gap between the inner wall of the combustion chamber outer shell and the outer wall of the cylinder, the projection of the first through hole on the plane where the third through hole is located falls within the range of the third through hole, the combustion chamber is connected with the first heating chamber through the first through hole and the third through hole, and the cylinder and the combustion chamber cover are located between the combustion mechanism housing and the combustion chamber outer shell.
The steam sprayer according to claim 5 is characterized in that a third flange is provided on the upper edge of the side wall of the combustion chamber shell, and the third flange is configured to bend and extend upward in the axial direction of the combustion chamber shell and outward in the radial direction of the combustion chamber shell, and the two sides of the third flange are respectively connected to the combustion mechanism housing and the burner shell.
The steam sprayer according to claim 6 is characterized in that the combustion mechanism housing is flush with the outer peripheral wall of the burner shell.
The steam sprayer according to claim 6 is characterized in that a spark plug outer mounting hole is provided at a position of the combustion mechanism housing corresponding to the spark plug inner mounting hole, and further comprises a spark plug, wherein the spark plug is sequentially inserted into the spark plug outer mounting hole and the spark plug inner mounting hole so as to be at least partially located in the combustion chamber.
The steam sprayer according to claim 8 is characterized in that the combustion chamber cover is provided with a fuel pipe, and the side of the combustion mechanism housing opposite to its open side is provided with an oil inlet hole, and the fuel pipe passes through the oil inlet hole and is connected to the oil tank of the steam sprayer.
The steam sprayer according to claim 1, characterized in that the exhaust pipe structure comprises an exhaust pipe, the exhaust pipe has a connecting section connected to the burner inner shell, the axial direction of the connecting section intersects with the axial direction of the burner inner shell on the same projection plane, and the exhaust pipe further comprises:

A necking section, one end of which is connected to the connecting section;

an elbow section, one end of which is connected to the other end of the necking section and the other end of which faces away from the combustion mechanism,

Wherein, the radial dimension of one end of the necking section connected to the connecting section is greater than the radial dimension of the other end of the necking section connected to the elbow section.
The steam sprayer according to claim 1 is characterized in that the burner inner shell has an outer protruding section protruding from the burner outer shell in the axial direction and the exhaust pipe structure is arranged on the outer protruding section, or the burner outer shell is provided with an avoidance portion, and the exhaust pipe structure passes through the avoidance portion.
The steam sprayer according to claim 10 is characterized in that the burner shell is a heat-insulating material piece, or the burner shell is provided with a plurality of heat dissipation holes arranged along its circumference.
The steam sprayer according to claim 1 is characterized in that the air supply mechanism is an axial flow fan assembly or a volute fan assembly, and the air supply mechanism is configured to form a wind pressure of not less than 800 Pa in the air inlet channel.
The steam sprayer according to claim 13, wherein the axial flow fan assembly comprises:

An air inlet pipe, wherein a mounting seat is provided at one end of the air inlet pipe, a ventilation gap is provided between the mounting seat and the inner wall of the air inlet pipe, and the ventilation gap forms the air supply port;

A driving mechanism, the driving mechanism is mounted on the mounting seat and has a rotating shaft extending along the axial direction of the air inlet pipe;

An axial flow fan is rotatably disposed at the other end of the air inlet duct and connected to the rotating shaft so as to rotate under the drive mechanism, wherein the operating wind pressure in the air inlet duct is not less than 800 Pa.
The steam sprayer according to claim 14, wherein the axial flow fan comprises:

A wheel hub, the wheel hub being connected to the rotating shaft;

A plurality of vortex blades are arranged at intervals along the circumference of the hub and each of the vortex blades is located between the air inlet pipe and the hub.
The steam sprayer according to claim 13, characterized in that the volute fan assembly comprises:

A volute, wherein a first installation cavity and a second installation cavity spaced apart from each other are defined in the volute, and the volute has an air inlet and an air supply port communicated with the second installation cavity;

A corrosion-resistant high-pressure component, the corrosion-resistant high-pressure component includes a driving mechanism and an impeller, the driving mechanism is arranged in the first mounting cavity, the impeller is arranged in the second mounting cavity, the driving shaft of the driving mechanism extends from the first mounting cavity into the second mounting cavity and is connected to the impeller to drive the impeller to suck the airflow from the air inlet into the second mounting cavity, and introduce it into the air inlet channel through the air supply port.
The steam sprayer according to claim 13 is characterized in that it also includes a filter, wherein the filter is arranged in the air inlet path of the air supply mechanism and is located upstream of the air inlet channel.
The steam sprayer according to claim 17, characterized in that the air supply mechanism is an axial flow fan assembly, and the filter comprises:

A connecting plate, the connecting plate is connected to one side of the combustion mechanism housing, a connecting plate through hole is provided in the middle of the connecting plate, and the position of the connecting plate through hole corresponds to the position of the air inlet channel;

A tube body, wherein the tube body is passed through the through hole of the connecting plate, and an end of the air inlet pipe facing away from the mounting seat of the axial flow fan assembly is passed through the tube body;

A fixing plate, wherein the fixing plate and the connecting plate are spaced apart in the axial direction of the tube body and the fixing plate is connected to the lower end surface of the tube body;

A plurality of filter plates are arranged along the outer circumference of the tube body between the connecting plate and the fixing plate at intervals, wherein the axial flow fan is spaced apart from the fixing plate in the axial direction.
The steam sprayer according to claim 2 is characterized in that the combustion mechanism has a fuel pipe, a fuel inlet hole for the fuel pipe to pass through is provided on a side of the combustion mechanism housing opposite to the open side thereof, and further comprises a box assembly and a spray head, wherein the box assembly comprises:

A fuel tank connected to the combustion mechanism via the fuel pipe;

An auxiliary agent box, the auxiliary agent box is connected to the inlet end of the external heating tube;

A medicine box, wherein the outlets of the medicine box and the internal heating pipe are both connected to the nozzle.
The steam sprayer according to claim 19, characterized in that the box assembly further comprises:

A box shell, wherein the box shell defines a box structure with one side open, the box structure defines a first accommodating cavity and one side of the box structure has a avoidance opening communicating with the first accommodating cavity, and the other side wall of the box structure adjacent to the side wall where the avoidance opening is located is recessed inward to form a second accommodating cavity;

The auxiliary agent box has an auxiliary agent tube, the auxiliary agent box is installed in the first accommodating cavity and the auxiliary agent tube passes through the box shell through the avoidance opening;

The oil tank and the medicine box are installed side by side above the box structure in a horizontal direction and are respectively locked and connected to the box structure.
The steam sprayer according to claim 20 is characterized in that the side wall of one of the oil tank and the medicine box has a protrusion and the side wall of the other has a recessed portion that cooperates with the protrusion, and when the oil tank and the medicine box are installed on the top of the box shell, the protrusion and the recessed portion cooperate with each other.
The steam sprayer according to claim 20 is characterized in that the bottom of the oil tank and the bottom of the medicine box are respectively provided with locking buckles connected to the box shell, and the additive box is provided with a calcium and magnesium ion filter, wherein the additive flows out after being filtered through the calcium and magnesium ion filter.
The steam sprayer according to claim 20, characterized in that the steam sprayer includes a spark Plug, the combustion mechanism has an inner spark plug mounting hole, the combustion mechanism housing has an outer spark plug mounting hole corresponding to the position of the inner spark plug mounting hole, the spark plug is sequentially inserted into the outer spark plug mounting hole and the inner spark plug mounting hole so as to be at least partially located in the combustion chamber of the combustion mechanism, the steam sprayer also includes a power supply, a pump body and a control system, the power supply, the pump body and the control system are all arranged in the second accommodating cavity, the power supply is respectively connected to the pump body, the air supply mechanism and the spark plug, the control system is respectively connected to the spark plug, the air supply mechanism and the pump body to control the spark plug, the air supply mechanism and the pump body.
The steam sprayer according to claim 23 is characterized in that the fuel tank is provided with a fuel pump, the control system includes an electronic injection ignition module and a solenoid valve, the oil outlet end of the fuel pump is connected to the fuel pipe through the solenoid valve, wherein the electronic injection ignition module is respectively connected to the spark plug, the air supply mechanism, and the solenoid valve to control the ignition stage and the working stage of the steam sprayer.
The steam sprayer according to claim 24, characterized in that when the steam sprayer is in the ignition stage, the EFI ignition module controls the solenoid valve to be at a first opening and the air supply mechanism to be at a first wind pressure or a first wind speed;

When the steam sprayer is in the working stage, the electronic spray ignition module controls the solenoid valve to be at the second opening and the air supply mechanism to be at the second wind pressure or the first wind speed.

The first opening is greater than the second opening and the first wind pressure is less than the second wind pressure, or the first opening is greater than the second opening and the first wind speed is less than the second wind speed.
The steam sprayer according to claim 20 is characterized in that the box assembly also includes a cover, and the cover is detachably covered on the second accommodating cavity.