Double-layer air cavity heat dissipation cold fog machine
By using a dual-layer air cavity structure for alternating heat dissipation, the problem of overheating of the cold fog machine's outer casing is solved, thus improving both safety and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-03-10
AI Technical Summary
The existing cold fogging machines have excessively high casing temperatures, which can cause injury to users, reduce their lifespan, and increase operating costs.
It adopts a double-layer air cavity structure, which uses the negative pressure reaction generated by hot air to drive the external airflow through the shell for heat dissipation. The first and second air cavities alternately absorb and expel heat to reduce the shell temperature.
It effectively prevents the outer casing from overheating, extends the service life of parts, increases heating efficiency and atomization effect, and reduces safety hazards.
Smart Images

Figure CN223980629U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural spraying devices, specifically to a double-layer air cavity cooling mist machine. Background Technology
[0002] Cold fogging agents are produced by heating an additive to increase its pressure, causing it to be sprayed from a nozzle into fine particles, creating an atomization effect. The combustion chamber of the cold fogging agent uses the heat generated by the combustion of oil to heat the additive located in the coil. However, when existing cold fogging machines heat the coil, the temperature of the outer casing also rises continuously. Excessively high temperatures on the outer casing can cause harm to the user, failing to meet safety standards. Furthermore, prolonged high-temperature operation of the outer casing components can reduce their service life and increase operating costs. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings of the above-mentioned traditional technologies and provide a double-layer air cavity cooling mist machine that can use hot air to generate a negative pressure reaction, thereby driving the external airflow to flow through the outer shell and then discharge, so as to dissipate heat on the outer shell of the mist machine coil.
[0004] The objective of this utility model is achieved through the following technical measures:
[0005] A double-layer air cavity cooling fogger, characterized in that: it includes a mounting baffle, one side surface of which is connected to a combustion assembly, and the other side surface of which is connected to a heating assembly. The heating assembly includes a heating sleeve, the end of which, away from the heating baffle, is connected to a fixed top cover, the fixed top cover being fixedly connected to a coil assembly. A heat dissipation assembly is connected to the outside of the heating sleeve, the heat dissipation assembly including a first heat insulation sleeve, which is sleeved with the heating sleeve, and the end of which, away from the mounting baffle, is fixedly connected to a... One end of the second heat insulation sleeve is sleeved with the first heat insulation sleeve, and the other end of the second heat insulation sleeve is fixedly connected to the mounting baffle. The mounting baffle is connected to the mounting housing on the side near the combustion assembly. The mounting housing is connected to the backpack assembly. The backpack assembly includes a medicine storage tank and an auxiliary agent tank. The medicine storage tank and the auxiliary agent tank have grooves. A control box is fixedly connected in the grooves. The bottom of the medicine storage tank and the auxiliary agent tank is fixedly connected to the same oil tank. The medicine storage tank, the auxiliary agent tank and the oil tank are respectively connected to the coil assembly and the combustion assembly through transmission pipes.
[0006] As an improvement: an oil spill prevention assembly is connected between the mounting baffle and the mounting housing. The oil spill prevention assembly includes an oil spill prevention collection cylinder. One end of the oil spill prevention collection cylinder is fixedly connected to the mounting baffle, and the other end of the oil spill prevention collection cylinder is fixedly connected to a partition baffle. The oil spill prevention collection cylinder, the mounting baffle, and the partition baffle together form an oil spill collection cavity.
[0007] As an improvement: the first heat insulation sleeve and the heating sleeve form a first air cavity, and the second heat insulation sleeve and the first heat insulation sleeve form a second air cavity, and the first air cavity and the second air cavity are connected.
[0008] As an improvement: a plurality of gap limiting blocks are fixedly connected to the first heat insulation sleeve, and the plurality of gap limiting blocks are evenly distributed on the inner and outer sides of the first heat insulation sleeve. A plurality of air inlet and heat dissipation holes are opened on the second heat insulation sleeve, and the plurality of air inlet and heat dissipation holes are evenly distributed on the second heat insulation sleeve. The second air cavity is connected to the outside through the plurality of air inlet and heat dissipation holes.
[0009] As an improvement: the combustion assembly includes a combustion cylinder, which is fixedly connected to a mounting baffle. A spark plug and a fuel supply pipe are fixedly connected to one end of the combustion cylinder. An air inlet pipe is connected to the surface of the combustion cylinder near the spark plug. An air supply fan is fixedly connected to the air inlet pipe and is located inside the mounting housing. A combustion chamber is formed inside the combustion cylinder. A combustion-supporting mesh is provided inside the combustion chamber and is fixedly connected to the combustion cylinder. The fuel supply pipe is connected to the fuel tank through a transmission pipe.
[0010] As an improvement: the heating sleeve forms a heating chamber, which is connected to the combustion chamber. The fixed top cover has a smoke outlet, and the heating chamber is connected to the outside through the smoke outlet.
[0011] As an improvement: the heating sleeve is fixedly connected to two top cover fixing brackets at the end away from the mounting baffle, and each of the two top cover fixing brackets is threaded with two fixing bolts. The fixed top cover is provided with a top cover mounting groove corresponding to the position of the top cover fixing bracket.
[0012] As an improvement: the coil assembly includes a feed bend, one end of which is fixedly connected to one end of a heating straight pipe, the other end of which is fixedly connected to one end of the heating bend, the other end of which is fixedly connected to a nozzle assembly, the feed bend being fixedly connected to a fixed top cover, the heating bend being fixedly connected to a fixed top cover, the feed bend being connected to an auxiliary agent tank via a transmission pipe, and the side of the nozzle assembly being connected to a drug storage tank via a transmission pipe.
[0013] As an improvement: the nozzle assembly includes a fixed nozzle, a connecting sleeve is fixedly connected to the fixed nozzle, an external nozzle is threadedly connected to the connecting sleeve, and a liquid input pipe is fixedly connected to the side of the fixed nozzle.
[0014] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:
[0015] During the heating process of the heating coil and heating straight tube, most of the hot air generated in the heating chamber is discharged through the flue, creating a pressure difference at the flue. This causes an imbalance in the air pressure between the first and second air chambers. The air inlet and heat dissipation holes of the second heat insulation sleeve draw external air into the second air chamber. After flowing through the second air chamber, the air carries away the heat from the first and second heat insulation sleeves and enters the first air chamber. The airflow entering the first air chamber carries away the heat from the first heat insulation sleeve and the heating sleeve, and then, together with the hot air generated in the heating chamber, is discharged from the front end of the device. This achieves the heating of the first heat insulation sleeve, the second heat insulation sleeve, and the heating sleeve. The heat dissipation effect is improved to prevent safety hazards such as burns. Since the first heat insulation sleeve, the second heat insulation sleeve, and the heating sleeve are not continuously kept at a high temperature, the service life of the parts is improved. The gap limiting block can effectively ensure the stability of the first and second air chambers. The combustion-supporting mesh can retain the oil sprayed from the oil supply pipe, so that the spark plug can burn continuously and stably after ignition. The air supply fan blows air in through the air inlet, so that the heat generated by combustion heats the heating coil and heating straight pipe, increasing the heating efficiency of the additive and improving the atomization effect and spray efficiency of the device. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0017] Figure 2 This is a schematic diagram of the unfolded three-dimensional structure of this utility model.
[0018] Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure.
[0019] Figure 4 yes Figure 3 A three-dimensional structural diagram of the second heat insulation sleeve.
[0020] Figure 5 yes Figure 1 A schematic diagram of the first split structure of the combustion component.
[0021] Figure 6 yes Figure 1 A schematic diagram of the second split structure of the combustion component.
[0022] Figure 7 This is a schematic diagram of gas flow in this utility model.
[0023] Figure 8 This is a cross-sectional structural diagram of the anti-overflow component in this utility model.
[0024] Figure 9 yes Figure 2 A partially enlarged schematic diagram of the central coil assembly.
[0025] Figure 10 This is a schematic diagram of the structure of this utility model in use.
[0026] Figure 11 This is a schematic diagram of the back and front states of this utility model.
[0027] Figure 12 yes Figure 9 A partial cross-sectional view of the nozzle assembly.
[0028] In the diagram: 1. Mounting baffle; 2. Combustion assembly; 21. Combustion cylinder; 22. Combustion chamber; 23. Spark plug; 24. Fuel supply pipe; 25. Combustion aid mesh; 26. Air inlet; 27. Air supply fan; 3. Oil spill prevention assembly; 31. Oil spill collection container; 32. Dividing baffle; 33. Oil spill collection chamber; 4. Mounting outer casing; 5. Heating assembly; 51. Heating sleeve; 52. Fixed top cover; 53. Smoke outlet; 54. Top cover mounting groove; 55. Top cover fixing bracket; 56. Fixing bolts; 57. Heating chamber; 6. Disc Pipe assembly; 61. Feed bend; 62. Heating coil; 63. Heating straight pipe; 64. Nozzle assembly; 641. Fixed nozzle; 642. Connecting screw sleeve; 643. External nozzle; 644. Liquid input pipe; 7. Heat dissipation assembly; 71. First heat insulation sleeve; 72. Second heat insulation sleeve; 73. Gap limiting block; 74. Air inlet and heat dissipation hole; 75. First air chamber; 76. Second air chamber; 8. Backpack assembly; 81. Medicine storage box; 82. Auxiliary agent box; 83. Oil tank; 84. Control box; 85. Transfer pipe. Detailed Implementation
[0029] Example: Figures 1 to 12As shown, a double-layer air cavity cooling fogger includes a mounting baffle 1. A combustion assembly 2 is connected to one side surface of the mounting baffle 1, and a heating assembly 5 is connected to the other side surface of the mounting baffle 1. The heating assembly 5 includes a heating sleeve 51. A fixed top cover 52 is connected to the end of the heating sleeve 51 away from the heating baffle. A coil assembly 6 is fixedly connected to the fixed top cover 52. A heat dissipation assembly 7 is connected to the outside of the heating sleeve 51. The heat dissipation assembly 7 includes a first heat insulation sleeve 71, which is sleeved with the heating sleeve 51. A second heat insulation sleeve 72 is fixedly connected to the end of the first heat insulation sleeve 71 away from the mounting baffle 1. At one end, the second heat insulation sleeve 72 is sleeved with the first heat insulation sleeve 71, and the other end of the second heat insulation sleeve 72 is fixedly connected to the mounting baffle 1. The mounting baffle 1 is connected to the mounting housing 4 on the side near the combustion assembly 2. The mounting housing 4 is connected to the backpack assembly 8. The backpack assembly 8 includes a medicine storage box 81 and an auxiliary agent box 82. The medicine storage box 81 and the auxiliary agent box 82 have grooves. A control box 84 is fixedly connected in the grooves. The bottom of the medicine storage box 81 and the auxiliary agent box 82 is fixedly connected to the same oil tank 83. The medicine storage box 81, the auxiliary agent box 82 and the oil tank 83 are respectively connected to the coil assembly 6 and the combustion assembly 2 through the transmission pipe 85. The fan 4 blows air in through the air inlet 26, thereby heating the heating coil 62 and the heating straight tube 63 with the heat generated by combustion, increasing the heating efficiency of the additives, improving the atomization effect and spray efficiency of the device. One side surface of the medicine storage box 81, the additive box 82 and the oil box 83 is set as an arc surface. The arc surface structure allows the backpack assembly 8 to fit the back of the human body more closely, thereby increasing the comfort of carrying.
[0030] An oil spill prevention assembly 3 is connected between the mounting baffle 1 and the mounting housing 4. The oil spill prevention assembly 3 includes an oil spill prevention collection cylinder 31. One end of the oil spill prevention collection cylinder 31 is fixedly connected to the mounting baffle 1, and the other end of the oil spill prevention collection cylinder 31 is fixedly connected to a partition baffle 32. The oil spill prevention collection cylinder 31, the mounting baffle 1, and the partition baffle 32 together form an oil spill collection cavity 33. The oil spill collection cavity 33 can effectively collect the oil flowing out of the combustion cylinder 21, preventing the overflowing oil from flowing into the mounting housing 4 and damaging the components inside the mounting housing 4. The partition baffle 32 can both block the overflowing oil and insulate against heat, preventing high temperature damage to the components and high-voltage coil inside the mounting housing 4.
[0031] The first heat-insulating sleeve 71 and the heating sleeve 51 form a first air cavity 75, and the second heat-insulating sleeve 72 and the first heat-insulating sleeve 71 form a second air cavity 76. The first air cavity 75 and the second air cavity 76 are connected in communication. A plurality of gap limiting blocks 73 are fixedly connected to the first heat-insulating sleeve 71, and the plurality of gap limiting blocks 73 are evenly distributed on the inner and outer sides of the first heat-insulating sleeve 71. A plurality of air inlet and heat dissipation holes 74 are opened on the second heat-insulating sleeve 72, and the plurality of air inlet and heat dissipation holes 74 are evenly distributed on the second heat-insulating sleeve 72. The second air cavity 76 is connected to the outside through the plurality of air inlet and heat dissipation holes 74.
[0032] The air inlet and heat dissipation hole of the second heat insulation sleeve 72 draws external airflow into the second air cavity 76. After flowing through the second air cavity 76, the airflow carries away the heat from the first heat insulation sleeve 71 and the second heat insulation sleeve 72 and enters the first air cavity 75. After entering the first air cavity 75, the airflow carries away the heat from the first heat insulation sleeve 71 and the heating sleeve, and is discharged from the front end of the device together with the hot airflow generated in the heating cavity 57. This achieves the heat dissipation effect of the first heat insulation sleeve 71, the second heat insulation sleeve 72 and the heating sleeve 51, preventing safety hazards such as burns. Since the first heat insulation sleeve 71, the second heat insulation sleeve 72 and the heating sleeve 51 are not continuously kept at a high temperature, the service life of the parts is improved. The gap limiting block 73 can effectively ensure the stability of the first air cavity 75 and the second air cavity 76.
[0033] The combustion assembly 2 includes a combustion cylinder 21, which is fixedly connected to the mounting baffle 1. A spark plug 23 and a fuel supply pipe 24 are fixedly connected to one end of the combustion cylinder 21. Multiple air inlets 26 are formed on the surface of the combustion cylinder 21 near the spark plug 23. A combustion chamber 22 is formed inside the combustion cylinder 21, and a combustion-supporting mesh 25 is provided inside the combustion chamber 22. The combustion-supporting mesh 25 is fixedly connected to the combustion cylinder 21. The fuel supply pipe 24 is connected to the fuel tank 83 via a transmission pipe 85. The combustion-supporting mesh 25 helps retain the fuel sprayed from the fuel supply pipe 24, ensuring continuous and stable combustion after the spark plug 23 is ignited. The heating sleeve 51, the combustion cylinder 21, and the mounting baffle 1 are all integrally welded; the combustion cylinder 21 is not traditionally cast.
[0034] The heating sleeve 51 forms a heating chamber 57, which is connected to the combustion chamber 22. The fixed top cover 52 has a smoke outlet 53, through which the heating chamber 57 is connected to the outside. The smoke outlet 53 is mainly used to exhaust the exhaust gas and hot gas generated during combustion.
[0035] Two top cover fixing brackets 55 are fixedly connected to the end of the heating sleeve 51 away from the mounting baffle 1. Each of the two top cover fixing brackets 55 is threaded with two fixing bolts 56. The fixed top cover 52 has a top cover mounting groove 54 corresponding to the position of the top cover fixing bracket 55. The top cover fixing brackets 55 are used to install and fix the top cover 52, and the fixing bolts 56 are used to limit the position of the fixed top cover 52.
[0036] The coil assembly 6 includes a feed bend 61, one end of which is fixedly connected to one end of a heating straight pipe 63. The other end of the heating straight pipe 63 is fixedly connected to one end of a heating bend 62, and the other end of the heating bend 62 is fixedly connected to a nozzle assembly 64. The feed bend 61 and the heating bend 62 are both fixedly connected to the fixed top cover 52. The feed bend 61 is connected to the additive tank 82 via a transmission pipe 85, and the nozzle assembly 64 is connected to the drug storage tank 81 via a transmission pipe 85. The feed bend 61 is used to input the additive to be atomized into the heating coil 62 and the heating straight pipe 63. The heating coil 62 can increase the heating area through its spiral structure to accelerate the additive to reach the atomization pressure and temperature. The heating straight pipe 63 can quickly deliver the additive that has reached the atomization pressure to the highest temperature for heating and pressurization, reducing heat loss and thus minimizing the reduction in atomization effect.
[0037] The nozzle assembly 64 includes a fixed nozzle 641, on which a connecting sleeve 642 is fixedly connected. An external nozzle 643 is threadedly connected to the connecting sleeve 642. A liquid inlet pipe 644 is fixedly connected to the side of the fixed nozzle 641. The fixed nozzle 641 is used to connect to the connecting sleeve 642. The fixed nozzle 641 is hexagonal in shape to facilitate drilling and installation of the liquid inlet pipe 644. The connecting sleeve 642 can be used to connect and fix the external nozzle 643. Different external nozzles 643 can be replaced according to different indoor usage scenarios and required atomization effects, achieving diverse combinations.
[0038] The air supplied by the fan 27 is blown in through the air inlet 26. The blown air helps the combustion mesh 25 to burn fully in the combustion chamber 21 to generate heat. The generated heat is blown into the heating chamber 57 of the heating sleeve 51 in the form of hot air. After heating the heating coil 62 and the heating straight tube 63, it is discharged through the smoke outlet 53. When the hot air is discharged through the smoke outlet 53, it will create a negative pressure suction effect at the smoke outlet 53, thereby attracting the air in the first air chamber 75. Since the first air chamber 75 is connected to the second air chamber 76, the air in the second air chamber 76 is attracted. The air inlet heat dissipation hole 74 allows outside air to enter the second air chamber 76. The air flows through the second air chamber 76 and the first air chamber 75 to achieve the heat dissipation effect of the first heat insulation sleeve 71, the second heat insulation sleeve 72 and the heating sleeve 51, thereby reducing the surface temperature of the first heat insulation sleeve 71, the second heat insulation sleeve 72 and the heating sleeve 51.
Claims
1. A double-wind-chamber heat-dissipation cold fogging machine, characterized in that: The utility model provides an installation baffle (1), one side surface of installation baffle (1) is connected with combustion subassembly (2), the other side surface of installation baffle (1) is connected with heating subassembly (5), and heating subassembly (5) includes heating sleeve (51), one end of heating sleeve (51) away from heating baffle is connected with fixed top cover (52), and fixed top cover (52) is fixedly connected with coil assembly (6), and the outside of heating sleeve (51) is connected with heat dissipation subassembly (7), and heat dissipation subassembly (7) includes first heat insulation sleeve (71), and first heat insulation sleeve (71) is sleeved with heating sleeve (51), and one end of first heat insulation sleeve (71) away from installation baffle (1) is fixedly connected with one end of second heat insulation sleeve (72), and second heat insulation sleeve (72) is sleeved with first heat insulation sleeve (71), and the other end of second heat insulation sleeve (72) is fixedly connected with installation baffle (1), and one side surface of installation baffle (1) close to combustion subassembly (2) is connected with installation shell (4), and installation shell (4) is connected with backpack subassembly (8), and backpack subassembly (8) includes storage tank (81) and auxiliary tank (82), and storage tank (81) and auxiliary tank (82) are provided with recess, and control box (84) is fixedly connected in recess, and the bottom of storage tank (81) and auxiliary tank (82) is fixedly connected with same oil tank (83), and storage tank (81), auxiliary tank (82) and oil tank (83) are connected with coil assembly (6) and combustion subassembly (2) through transmission pipe (85) respectively.
2. The double-layer air cavity heat dissipation cold fogging machine according to claim 1, characterized in that: The installation baffle (1) and the installation shell (4) are connected with the anti-oil spill assembly (3), the anti-oil spill assembly (3) includes an anti-oil spill storage cylinder (31), one end of the anti-oil spill storage cylinder (31) is fixedly connected with the installation baffle (1), the other end of the anti-oil spill storage cylinder (31) is fixedly connected with a partition baffle (32), and the anti-oil spill storage cylinder (31), the installation baffle (1) and the partition baffle (32) form an oil spill storage cavity (33).
3. The dual-wind-chamber heat-radiating cold fogging machine according to claim 1, wherein: The first heat insulation sleeve (71) and the heating sleeve (51) form a first air cavity (75), the second heat insulation sleeve (72) and the first heat insulation sleeve (71) form a second air cavity (76), and the first air cavity (75) and the second air cavity (76) are in communication.
4. The dual-wind-chamber heat-radiating cold fogging machine according to claim 3, characterized in that: A plurality of gap limiting blocks (73) are fixedly connected to the first heat insulation sleeve (71), and the plurality of gap limiting blocks (73) are evenly distributed on the inner and outer sides of the first heat insulation sleeve (71), a plurality of air inlet heat dissipation holes (74) are formed in the second heat insulation sleeve (72), and the plurality of air inlet heat dissipation holes (74) are evenly distributed on the second heat insulation sleeve (72), and the second air cavity (76) and the outside are in communication through the plurality of air inlet heat dissipation holes (74).
5. The dual-wind-chamber heat-radiating cold fogger according to claim 1, wherein: The combustion assembly (2) comprises a combustion cylinder (21) fixedly connected with the mounting baffle (1), one end of the combustion cylinder (21) is fixedly connected with a spark plug (23) and an oil supply pipe (24), the end surface of the combustion cylinder (21) close to the spark plug (23) is connected with an air inlet pipe (26), the air inlet pipe (26) is fixedly connected with a wind supply fan (27), the wind supply fan (27) is arranged on the inner side of the mounting shell (4), a combustion chamber (22) is formed in the combustion cylinder (21), a combustion supporting net (25) is arranged in the combustion chamber (22), the combustion supporting net (25) is fixedly connected with the combustion cylinder (21), and the oil supply pipe (24) is connected with an oil tank (83) through a transmission pipe (85).
6. The dual-wind-chamber heat-radiating cold fogger according to claim 5, wherein: The heating sleeve (51) forms a heating cavity (57) therein, the heating cavity (57) is arranged in communication with the combustion chamber (22), the fixed top cover (52) is provided with a smoke outlet (53), and the heating cavity (57) is arranged in communication with the outside through the smoke outlet (53).
7. The dual-wind-chamber heat-radiating cold fogger of claim 1, wherein: The heating sleeve (51) is fixedly connected with two top cover fixing frames (55) away from the mounting baffle (1), two fixed bolts (56) are threadedly connected to the top cover fixing frames (55), and the fixed top cover (52) is provided with a top cover mounting groove (54) corresponding in position to the top cover fixing frames (55).
8. The dual-wind-chamber heat-radiating cold fogger according to claim 1, wherein: The coil assembly (6) comprises an inlet elbow (61), one end of the inlet elbow (61) is fixedly connected with one end of a heating straight pipe (63), the other end of the heating straight pipe (63) is fixedly connected with one end of a heating elbow (62), the other end of the heating elbow (62) is fixedly connected with a nozzle assembly (64), the inlet elbow (61) is fixedly connected with the fixed top cover (52), the heating elbow (62) is fixedly connected with the fixed top cover (52), the inlet elbow (61) is connected with an additive tank (82) through a transmission pipe (85), and the nozzle assembly (64) is connected with a medicine storage tank (81) through a transmission pipe (85).
9. The dual-wind-chamber heat-dissipation cold-mist machine according to claim 8, characterized in that: The nozzle assembly (64) comprises a fixed nozzle (641), the fixed nozzle (641) is fixedly connected with a connecting screw sleeve (642), the connecting screw sleeve (642) is threadedly connected with an external nozzle (643), and the fixed nozzle (641) is fixedly connected with a medicine liquid input pipe (644).