Pneumatic collision heat generation high temperature hot air blower

Abstract

The invention discloses a pneumatic collision heat generating high temperature hot air blower, comprising a casing, a casing air inlet, a casing air outlet, a fan impeller, impeller blades, an impeller air outlet, an impeller disk, an impeller inner flow channel, an impeller sleeve, a casing inner flow channel, a casing radial side wall and a casing axial side wall. The casing radial side wall and the casing axial side wall are both double-layer sandwich wall structures, forming a casing sandwich wall space. The inner side wall of the casing sandwich wall is a screen structure, and the screen mesh air holes thereon are connected to the casing sandwich wall space internally and to the casing inner flow channel externally. A plurality of casing sandwich wall space isolation blocks are provided in the casing sandwich wall space, dividing the sandwich wall space into a plurality of collision heat generating chambers; an axial empty cylinder collision heat generator is provided on the outer side of the inner side wall of the casing sandwich wall of the casing radial side wall, and the cylinder wall of the empty cylinder collision heat generator is a screen structure. The invention can generate high temperature hot air, and has the advantages of high hot air temperature rise, high thermal efficiency, multiple functions, and energy saving.

Description

Technical Field

[0001] The invention relates to a pneumatic collision heat-generating high-temperature hot air blower, belonging to thermal machinery or gas machinery. Background Art

[0002] The various ventilators, blowers, compressors and other gas machines used by people now can only produce cold air, but not high-temperature hot air. Although some pneumatic heat-generating high-temperature hot air blowers used by people can produce high-temperature hot air, their thermal efficiency is still relatively low, the temperature rise of the hot air is still relatively low, and the scope of use is narrow, which cannot meet people's various needs for the use of high-temperature thermal energy in production and life. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned existing technology and provide a pneumatic collision heating high-temperature hot air blower that can generate high-temperature hot air, has a high temperature rise, has high thermal efficiency, multiple functions, saves more energy, and can meet people's various needs for high-temperature hot air.

[0004] The technical solution of the present invention is as follows:

[0005] A pneumatic collision heat generating high temperature hot air blower comprises a casing, a casing air inlet, a casing air outlet, a fan impeller, impeller blades, an impeller air outlet, an impeller disc, an impeller inner flow channel, an impeller shaft sleeve, a casing inner flow channel, a casing radial side wall and a casing axial side wall, the casing radial side wall and the casing axial side wall are both double-layer sandwich wall structures, the double-layer sandwich wall comprises a casing sandwich wall outer wall and a casing sandwich wall inner wall, the casing sandwich wall outer wall and the casing sandwich wall inner wall constitute a casing sandwich wall space, the casing sandwich wall inner wall is a screen structure, The sieve mesh air holes on the inner wall of the casing sandwich wall are connected to the casing sandwich wall space inwardly and to the inner flow channel of the casing outwardly. A plurality of casing sandwich wall space isolation blocks are arranged in the casing sandwich wall space, and the casing sandwich wall space isolation blocks divide the entire sandwich wall space into a plurality of casing sandwich wall space collision heat generating chambers isolated from each other; an axial empty cylinder collision heat generator is arranged on the outer side of the inner wall of the casing sandwich wall of the radial side wall of the casing, and the cylinder wall of the empty cylinder collision heat generator is a sieve mesh structure, and the axial ends of the empty cylinder collision heat generator are connected to the inner wall of the casing sandwich wall of the axial side wall of the casing, and the inner cavity of the empty cylinder collision heat generator is connected to the casing sandwich wall space of the radial side wall of the casing through the sieve mesh air holes and the sieve mesh air holes on the inner wall of the casing sandwich wall.

[0006] In order to further achieve the purpose of the present invention, a second layer of casing sandwich wall inner wall is arranged on the outer side of the inner wall of the casing sandwich wall of the radial side wall of the casing, and the inner wall of the second layer of casing sandwich wall is of a screen structure. The inner wall of the second layer of casing sandwich wall with a screen structure and the inner wall of the casing sandwich wall with a screen structure constitute a second layer of casing sandwich wall space. The casing sandwich wall space and the second layer of casing sandwich wall space are connected to each other through the screen mesh holes on the inner wall of the casing sandwich wall. The screen mesh holes on the inner wall of the second layer of casing sandwich wall are connected to the second layer of casing sandwich wall space internally and to the inner flow channel of the casing externally; a plurality of casing sandwich wall space isolation blocks are arranged in the second layer of casing sandwich wall space, and the casing sandwich wall space isolation blocks divide and isolate the second layer of casing sandwich wall space into a plurality of casing sandwich wall space collision heat generating chambers isolated from each other; an axial empty cylinder collision heat generator is arranged on the outer side of the inner wall of the second layer of casing sandwich wall, and the cylinder wall of the empty cylinder collision heat generator is of a screen structure. The axial ends of the empty cylinder collision heat generator are connected to the inner wall of the casing sandwich wall of the axial side wall of the casing, and the inner cavity of the empty cylinder collision heat generator is connected to the space of the second casing sandwich wall through its sieve mesh pores and the sieve mesh pores of the inner wall of the second casing sandwich wall.

[0007] In order to further achieve the purpose of the present invention, a radial empty cylinder collision heat generator is provided on the outer side of the inner wall of the casing clamping wall of the axial side wall of the casing, the cylinder wall of the empty cylinder collision heat generator is a screen structure, the axial side of the empty cylinder collision heat generator is connected to the inner wall of the casing clamping wall, and the inner cavity of the empty cylinder collision heat generator is connected to the casing clamping wall space through its screen mesh pores and the screen mesh pores of the inner wall of the casing clamping wall.

[0008] In order to further achieve the purpose of the present invention, a second-layer casing sandwich wall inner side wall is provided on the outer side of the casing sandwich wall inner side wall of the axial side wall of the casing, and the second-layer casing sandwich wall inner side wall is a screen structure. The second-layer casing sandwich wall inner side wall with screen structure and the casing sandwich wall inner side wall with screen structure constitute a second-layer casing sandwich wall space. The casing sandwich wall space and the second-layer casing sandwich wall space are connected to each other through the screen mesh air holes on the casing sandwich wall inner side wall. The screen mesh air holes of the second-layer casing sandwich wall inner side wall are connected to the second-layer casing sandwich wall space internally and to the inner flow channel of the casing externally; a plurality of casing sandwich wall space isolation blocks are provided in the second-layer casing sandwich wall space, and the casing sandwich wall space isolation blocks divide and isolate the second-layer casing sandwich wall space into a plurality of casing sandwich wall space collision heat generating chambers isolated from each other.

[0009] In order to further achieve the purpose of the present invention, a radial empty cylinder collision heat generator is provided on the outer side of the inner wall of the second layer of the casing sandwich wall on the axial side wall of the casing. The cylinder wall of the empty cylinder collision heat generator is a screen structure. The axial side of the empty cylinder collision heat generator is connected to the inner wall of the second layer of the casing sandwich wall. The inner cavity of the empty cylinder collision heat generator is connected to the space of the second layer of the casing sandwich wall through its screen mesh pores and the screen mesh pores on the inner wall of the second layer of the casing sandwich wall.

[0010] In order to further achieve the purpose of the present invention, the impeller disc of the fan impeller is a screen structure, and the air holes of the impeller screen are connected to the inner flow channel of the impeller internally and to the outer space of the impeller externally.

[0011] In order to further achieve the purpose of the present invention, the impeller disc of the fan impeller is a sandwich wall structure, and the impeller disc sandwich wall is composed of an outer wall of the impeller disc sandwich wall and an inner wall of the impeller disc sandwich wall to form an impeller disc sandwich wall space. The impeller disc sandwich wall space is connected with the outer space of the impeller through the sieve mesh holes on the outer wall of the impeller disc sandwich wall, and is connected with the inner flow channel of the impeller through the sieve mesh holes on the inner wall of the impeller disc sandwich wall.

[0012] In order to further achieve the purpose of the present invention, the side wall of the air inlet of the casing is a clamped wall structure, the casing air inlet clamped wall includes an outer wall of the casing air inlet clamped wall and an inner wall of the casing air inlet clamped wall, the outer wall of the casing air inlet clamped wall and the inner wall of the casing air inlet clamped wall constitute the casing air inlet clamped wall space, the inner wall of the casing air inlet clamped wall is a screen structure, and the casing air inlet clamped wall space is connected with the inner flow channel of the casing air inlet through the screen mesh holes of the inner wall of the casing air inlet clamped wall.

[0013] For the convenience of description and accurate expression, here are some related words:

[0014] The central axis of the impeller points in the axial direction, and the side or side wall of the impeller and the side or side wall of the casing are called axial side or axial side wall.

[0015] The side of the impeller or the body facing the motor is the axial rear side, and the other side corresponding thereto is the axial front side.

[0016] The direction perpendicular to the impeller's central axis is radial, the direction close to the impeller's axis is the impeller's radial front, and its front end is the impeller's radial front end, the direction close to the impeller's outer circle is the impeller's radial rear, and its outer circle edge is the impeller's radial end. The designation of the relevant parts of the casing is similar. The impeller's rotation direction is circumferential, the impeller's rotation direction is forward or circumferentially forward, and the impeller's rotation direction is backward or circumferentially backward.

[0017] The orientation of the air inlet of the casing is referred to as: the entrance of the air inlet of the casing is the front, the exit of the air inlet of the casing is the rear, and the orientation of the air inlet of the casing is referred to similarly.

[0018] The impeller flow channel refers to the inner flow channel of the impeller and the blade flow channel; the blade is the flow-passing component, and the blade flow channel is the blade itself.

[0019] The pneumatic collision heating high-temperature hot air blower of the present invention adopts the collision stagnation heating principle (collision heating principle for short), does not require any other heat source or any other heat medium, and only relies on the operation of the fan impeller itself to form the collision stagnation heating effect to generate high-temperature hot air for people's production and life needs.

[0020] The so-called collision stagnation heat generation principle is that the cold air entering the fan body is processed into high-pressure and high-speed airflow by the impeller. The high-pressure and high-speed airflow repeatedly collides with the body parts and the gas in the body to generate heat and absorb heat, forming high-temperature or ultra-high-temperature hot air, which is then discharged from the body for other uses. Compared with the oscillation heat generation principle, the induction oscillation heat generation principle or the cycle oscillation heat generation principle, the collision stagnation heat generation principle has a stronger heat generation effect and generates more heat due to its large collision impulse. Therefore, the cold air generates and absorbs more heat, the gas temperature rises higher, and its thermal efficiency is higher.

[0021] The pneumatic collision heat generating high temperature hot air blower of the present invention has higher thermal efficiency than general pneumatic heat generating high temperature hot air blower, oscillating heat generating high temperature hot air blower or induction oscillating heat generating high temperature hot air blower, and is similar to the efficiency of heat pump air conditioner, >200, but it is simpler in structure than heat pump air conditioner, does not require any other heat source or any other heat medium, and is not restricted by any weather or geographical natural environment (it can be used in ultra-low temperature conditions of dozens of degrees below zero or hundreds of degrees Celsius). Collision stagnation heat generation can generate ultra-high temperature hot air of >600℃ for people's production and life use, which is something that heat pump air conditioner cannot do at all.

[0022] The present invention can replace various boilers, heat pumps, oil furnaces, coal furnaces, electric furnaces, electric heating equipment, solar energy equipment and the like in many aspects.

[0023] The pneumatic collision heat-generating high-temperature hot air blower of the present invention comprises a casing, a casing air inlet, a casing air outlet, a fan impeller, impeller blades, an impeller air outlet, a front impeller disk, a rear impeller disk, an impeller shaft sleeve, an inner flow channel of the casing, a radial side wall of the casing and an axial side wall of the casing, which are a double-layer (or three-layer or four-layer) sandwich wall structure. The double sandwich wall comprises an outer side wall of the casing sandwich wall and an inner side wall of the casing sandwich wall. The outer side wall of the casing sandwich wall and the inner side wall of the casing sandwich wall, and the outer side wall of the casing sandwich wall and the inner side wall of the casing sandwich wall constitute a casing sandwich wall space. A plurality of sandwich wall space isolation blocks are arranged in the casing sandwich wall space. The sandwich wall space isolation blocks divide the sandwich wall space into a plurality of casing sandwich wall space collision heat-generating chambers isolated from each other.

[0024] Since the inner wall of the housing sandwich wall is a screen structure, with the help of the mesh pores on the screen, when the high-pressure and high-speed strong cold wind processed by the impeller hits the inner wall of the screen-type housing sandwich wall, it can not only make the strong cold wind gas rush into the sandwich wall space and collide with the immediate existing gas in the collision heat generating chamber to slow down and stop the heat generation, but also make the high-temperature gas in the collision heat generating chamber of the sandwich wall space after the collision and stagnation of heat generation rush out of the inner wall of the screen-type sandwich wall and reversely collide with the cold wind gas that is about to enter the collision heat generating chamber to slow down and stop the heat generation, and the heat generation effect is double. Since the housing sandwich wall space is divided and separated into mutually isolated sandwich wall space collision heat generating chambers, the cold wind airflow rushing into the collision heat generating chamber through the mesh pores of the inner wall of the screen-type sandwich wall space cannot flow in the longitudinal and transverse directions of the sandwich wall space, but can only rush into and out of the housing sandwich wall space (sandwich wall space collision heat generating chamber) along the inner and outer directions of the sandwich wall space, thereby promoting a good heat generation effect, high heat generation efficiency, and high heat generation.

[0025] The so-called immediate original gas means that when the high-pressure and high-speed airflow gas in the flow channel inside the casing discharged by the fan impeller collides with the inner wall of the screen-type casing sandwich wall or the inner wall of the second-layer screen-type casing sandwich wall, some of the high-pressure and high-speed airflow gas will inevitably collide into the casing sandwich wall space to collide with the heat generating chamber or the second-layer casing sandwich wall space to collide with the heat generating chamber, and instantly fill and reside in the casing sandwich wall space to collide with the heat generating chamber or the second-layer casing sandwich wall space to collide with the heat generating chamber. This part of the high-pressure and high-speed airflow gas is called the immediate original gas.

[0026] The present invention is the same as the circulating oscillating heat generating high temperature hot air blower, and its casing is also a double-layer and multi-layer sandwich wall structure, and is also provided with a sandwich wall space. However, the sandwich wall space of the casing of the circulating oscillating heat generating high temperature hot air blower is closed to the outside, and the inner wall of the sandwich wall is sealed, and the gas in the sandwich wall space is not allowed to flow out longitudinally or transversely. The entire sandwich wall space is empty, and the entire sandwich wall space is an airflow channel, and the airflow can flow in the entire sandwich wall space. The sandwich wall space can only play the role of guiding the gas.

[0027] The pneumatic collision heat generating high temperature hot air blower of the present invention has a screen structure on the inner side wall of the casing sandwich wall, which is connected to the outside, and the gas in the entire casing sandwich wall space can enter and exit the casing sandwich wall space through the screen mesh holes. Most importantly, the pneumatic collision heat generating high temperature hot air blower has a collision heat generating chamber in the casing sandwich wall space that is isolated from each other and not connected to each other. The entire sandwich wall space does not allow gas to flow longitudinally or transversely therethrough, and collision heat generation is carried out inside and outside the collision heat generating chamber in the sandwich wall space, and the entire casing sandwich wall space plays a major role in heating and temperature generation.

[0028] For the present technology, the so-called multi-layer sandwich wall structure of the casing side wall means that the casing axial side wall and the casing radial side wall are formed by a multi-layer sandwich wall structure. "Multi-layer" includes double layer (two layers), three layers, four layers, and so on. The outermost layer of the casing multi-layer sandwich wall is called the casing sandwich wall outer wall, and the one or two or three layers inside the casing sandwich wall outer wall are collectively referred to as the casing sandwich wall inner wall. The casing sandwich wall inner wall can be respectively referred to as the first layer casing sandwich wall inner wall (referred to as the casing inner wall), the second layer casing sandwich wall inner wall, the third layer casing sandwich wall inner wall, the fourth layer casing sandwich wall inner wall, and so on in order of distance from the casing sandwich wall outer wall. The casing sandwich wall inner wall of the present invention generally adopts the first layer casing sandwich wall inner wall (referred to as the casing sandwich wall inner wall), or adopts the second layer casing sandwich wall inner wall, and at most adopts the third layer casing sandwich wall inner wall.

[0029] The casing sandwich wall space formed by the casing sandwich wall outer wall and the first-layer casing sandwich wall inner wall (referred to as casing sandwich wall inner wall) is referred to as casing sandwich wall space, the casing sandwich wall space formed by the first-layer casing sandwich wall inner wall and the second-layer casing sandwich wall inner wall is called the second-layer casing sandwich wall space, the casing sandwich wall space formed by the second-layer casing sandwich wall inner wall and the third-layer casing sandwich wall inner wall is called the third-layer casing sandwich wall space….

[0030] The most fundamental difference between pneumatic collision heat generating high temperature hot air blower and oscillation heat generating high temperature hot air blower, induction oscillation heat generating high temperature hot air blower and circulation oscillation heat generating high temperature hot air blower lies in the use of working medium. Oscillation heat generating high temperature hot air blower, circulation oscillation heat generating high temperature hot air blower and other hot air blowers adopt the oscillation heat generating principle, which is inseparable from the energy-gathering oscillation heat generating device, especially the flexible, elastic and high temperature resistant energy-gathering oscillation heat generating body. Pneumatic collision heat generating high temperature hot air blower adopts the collision stagnation heat generating principle, which relies on the high-speed air flow gas itself to directly collide with each other to generate heat, and does not need other working heat generating medium heat generating medium, so its structure is particularly simple.

[0031] The materials used in the energy-gathering oscillating heat generating body are easy to cause pollution to the processed high-temperature hot air, and are not suitable for making food-grade high-temperature hot air blowers. The pneumatic collision heat generating high-temperature hot air blower does not use the working medium of the energy-gathering oscillating heat generating body that causes pollution. It only relies on the collision and stagnation of pure air gas to generate heat, and it cannot cause pollution to the processed high-temperature hot air at all. It is particularly suitable for the manufacture of food-grade and various medical and health-grade high-temperature and low-temperature hot air blowers. What is particularly important is the collision and stagnation heat generating principle, which has good heat generating effect, high thermal efficiency, and saves more energy.

[0032] In order to more effectively increase the air temperature of the hot air blower and improve the thermal efficiency of the hot air blower, the present invention can also provide a screen-type second-layer casing sandwich wall inner wall on the outer side of the casing sandwich wall inner wall of the radial side wall of the casing. The screen-type second-layer casing sandwich wall inner wall and the screen-type casing sandwich wall inner wall constitute a second-layer casing sandwich wall space in which a plurality of casing sandwich wall space isolation blocks are provided. The casing sandwich wall space isolation blocks divide the second-layer casing sandwich wall space into a plurality of casing sandwich wall space collision stagnation heat generating chambers that are isolated from each other.

[0033] This technology, since the inner wall of the casing sandwich wall (the inner wall of the first casing sandwich wall) is a screen structure, the mesh holes on the screen can guide the gas from the second casing sandwich wall space into the casing sandwich wall space (the first casing sandwich wall space), and from the casing sandwich wall space into the second casing sandwich wall space. When the machine body is working, in the flow channel inside the casing, the high-pressure and high-speed airflow gas discharged by the impeller first passes through the screen-type inner wall of the second casing sandwich wall and collides into the collision heat generating chamber of the second casing sandwich wall space, collides with the immediate original gas in the collision heat generating chamber of the second casing sandwich wall space to generate heat, and then collides into the collision heat generating chamber of the casing sandwich wall space (the first casing sandwich wall space) to generate heat. At the same time, the immediate original gas in the collision heat generating chamber of the casing sandwich wall space collides with the oncoming gas from the collision heat generating chamber of the second casing sandwich wall space. Heat is generated by the high-pressure and high-speed gas colliding with the heat generating chamber, and the second layer casing wall space collides with the high-pressure and high-speed gas discharged from the impeller to generate heat. In this way, the high-pressure and high-speed gas discharged from the impeller collides with the heat generating chamber through the second layer casing wall space and the casing wall space to generate heat, and then collides with the heat generating chamber through the casing wall space and the second layer casing wall space to generate heat, and finally becomes high-temperature hot air and is discharged to the inner flow channel of the casing, and then is discharged from the body.

[0034] Obviously, with this technology, high-pressure and high-speed cold air passes through two collision heat generation processes: the second-layer casing sandwich space collides with the heat generation chamber and the casing sandwich space collides with the heat generation chamber. Therefore, the heat generation effect will be better, more heat will be generated, the gas temperature will rise higher, and its thermal efficiency will be higher.

[0035] Obviously, this technology is also suitable for application to the axial side wall of the casing, that is, a screen-type second-layer casing sandwich wall inner wall is arranged outside the inner wall of the casing sandwich wall of the axial side wall of the casing, a second-layer casing sandwich wall space is arranged, and a second-layer casing sandwich wall space collision heat generating chamber is arranged.

[0036] This technology, if used on both the radial side wall and the axial side wall of the casing, can enable the entire hot air blower to achieve a better heat generation effect, generate more heat, higher temperature, and obtain higher thermal efficiency.

[0037] According to the collision stagnation heat generation principle, the present invention can also design the front impeller disc or the rear impeller disc of the fan impeller as a screen structure, or design both the front impeller disc and the rear impeller disc of the fan impeller as screen structures. After the impeller disc is designed as a screen structure, the screen mesh pores of the impeller disc are connected to the outer space of the impeller disc externally and to the inner space of the impeller internally.

[0038] During operation, a high-speed airflow is formed on the outside of the high-speed rotating impeller. The high-speed airflow collides with the high-pressure gas in the inner space of the impeller through the air holes of the impeller disc sieve to slow down and stop generating heat. At the same time, the high-pressure gas on the inside of the impeller collides with the high-speed airflow from the outer space of the impeller through the air holes of the impeller sieve in the opposite direction to slow down and stop generating heat, thereby turning the low-temperature gas on the outside and inside of the impeller into high-temperature gas, which is then discharged from the impeller and discharged into the flow channel inside the casing.

[0039] When this technology is used, only the front impeller disc of the fan impeller can be made into a screen structure, only the rear impeller disc of the fan impeller can be made into a screen structure, or both the front impeller disc and the rear impeller disc of the fan impeller can be made into screen structures at the same time.

[0040] The fan impeller screen structure technology can make the hot air blower generate some extra heat, further improving the thermal efficiency of the hot air blower.

[0041] According to the collision heat generation principle, the present invention can also provide a radial or axial empty cylinder collision heat generator on the outside of the inner wall of the casing sandwich wall of the radial side wall of the casing and the axial side wall of the casing, or on the outside of the inner wall of the second layer of the casing sandwich wall, and the cylinder wall of the empty cylinder collision heat generator is a screen structure.

[0042] If the empty cylinder collision heat generator is of axial type, its two axial ends are connected to the inner wall of the casing sandwich wall of the axial side wall of the casing or the inner wall of the second casing sandwich wall, and the inner cavity of the empty cylinder collision heat generator is connected to the casing sandwich wall space collision heat generating chamber of the casing axial side wall or the second casing sandwich wall space collision heat generating chamber through the sieve holes of its cylinder wall and the sieve holes of the inner wall of the casing sandwich wall or the second casing sandwich wall.

[0043] If the empty cylinder collision heat generator is of radial type, its axial side is connected to the inner wall of the casing sandwich wall or the inner wall of the second layer of casing sandwich wall, and the inner cavity of the empty cylinder heat generator is connected to the casing sandwich wall space collision heat generating chamber or the second layer of casing sandwich wall space collision heat generating chamber through the cylinder wall mesh holes and the casing sandwich wall or the inner wall mesh holes of the casing sandwich wall.

[0044] If the empty cylinder collision heat generator is of radial type, its axial side is connected to the inner wall of the casing sandwich wall or the inner wall of the second layer of casing sandwich wall, and the inner cavity of the empty cylinder heat generator is connected to the casing sandwich wall space collision heat generating chamber or the second layer of casing sandwich wall space collision heat generating chamber through the cylinder wall mesh holes and the casing sandwich wall or the inner wall mesh holes of the casing sandwich wall.

[0045] The shape of the empty cylinder collision heat generator can be a square cylinder, a flat cylinder, or a round cylinder.

[0046] During operation, the high-pressure and high-speed airflow in the flow channel inside the casing passes through the sieve mesh holes on the wall of the empty cylinder collision heat generator and collides with the existing high-pressure gas in the inner cavity of the empty cylinder collision heat generator, decelerating and reducing the pressure, and stopping heat generation. At the same time, the existing high-pressure gas in the inner cavity of the empty cylinder collision heat generator passes through the sieve mesh holes on the wall of the empty cylinder collision heat generator and reversely collides with the high-pressure and high-speed airflow from the flow channel inside the casing, decelerating and reducing the pressure to generate heat. In this way, the gas in the inner cavity of the empty cylinder collision heat generator generates heat through collision and reverse collision to become high-temperature hot air, which then passes through the sieve mesh holes on the wall of the empty cylinder collision heat generator and the inner wall of the casing sandwich wall or the sieve mesh holes on the inner wall of the second layer of the casing sandwich wall, and flows into the casing sandwich wall space collision heat generation chamber or the second layer of the casing sandwich wall space collision heat generation chamber, and then performs collision and reverse collision heat generation.

[0047] The present invention adopts the screen structure type empty cylinder collision heat generator technology, which can further improve the thermal efficiency of the hot air blower.

[0048] According to the principle of aerodynamic collision heat generation and the technical principle of screen structure, the impeller disc of the fan impeller of the present invention can also be made into a sandwich wall structure. The impeller disc sandwich wall includes an outer wall of the impeller disc sandwich wall and an inner wall of the impeller disc sandwich wall. The outer wall of the impeller disc sandwich wall and the inner wall of the impeller disc sandwich wall are both screen structures. The outer wall of the impeller disc sandwich wall and the inner wall of the impeller disc sandwich wall constitute the impeller disc sandwich wall space. The impeller disc sandwich wall space is connected with the outer space of the impeller disc through the sieve mesh holes of the outer wall of the impeller disc sandwich wall, and is connected with the inner flow channel of the impeller through the sieve mesh holes of the inner wall of the impeller disc sandwich wall.

[0049] The inner wall of the impeller disc sandwich wall can be designed into multiple layers such as one layer, two layers, three layers, etc. The inner wall of the one-layer impeller disc sandwich wall constitutes a single layer of impeller disc sandwich wall space, the inner wall of the two-layer impeller disc sandwich wall constitutes a second layer of impeller disc sandwich wall space, the inner wall of the three-layer impeller disc sandwich wall constitutes a three-layer impeller disc sandwich wall space, and so on.

[0050] The impeller disc sandwich wall is designed as a multi-layer impeller disc sandwich wall space structure with more than two layers, which can greatly improve the thermal efficiency of the hot air blower. Due to the high-speed rotation of the fan impeller, a high-pressure and high-speed airflow can be formed in the outer space of the impeller, and a high-pressure gas mass can be formed in the inner flow channel of the impeller. The high-pressure and high-speed airflow and the high-pressure gas mass generate heat through double-multiple collisions and counter-collisions in the two-layer multi-layer impeller disc sandwich wall space, so more heat is generated and the gas temperature rises higher.

[0051] According to the collision heat generation principle and the screen structure technical principle, the present invention can also design the side wall of the casing air inlet into a sandwich wall structure, the casing air inlet sandwich wall includes an outer wall of the air inlet sandwich wall and an inner wall of the casing air inlet sandwich wall, the outer wall of the casing air inlet sandwich wall and the inner wall of the casing air inlet sandwich wall constitute the casing air inlet sandwich wall space, the inner wall of the casing air inlet sandwich wall is a screen structure, and the casing air inlet sandwich wall space is connected to the inner flow channel of the casing air inlet through the screen mesh holes on the inner wall of the casing air inlet sandwich wall.

[0052] In this technology, the air inlet of the casing can be shaped as a square tube or a round tube. The casing air inlet sandwich wall can be a double-layer sandwich wall, a triple-layer sandwich wall, a quadruple-layer sandwich wall or other multi-layer sandwich wall. The casing air inlet sandwich wall space can be double-layered, triple-layered or other multi-layered. The inner wall of the casing air inlet sandwich wall can be one-layered, two-layered, three-layered or other multi-layered. The multiple inner walls of the casing air inlet sandwich wall are collectively referred to as the inner wall of the casing air inlet sandwich wall. The multi-layer casing air inlet sandwich wall spaces are interconnected through the sieve mesh holes of the inner wall of the casing air inlet sandwich wall. The casing air inlet sandwich wall space is connected to the flow channel of the inner space of the casing air inlet through the sieve mesh holes of the inner wall of the casing air inlet sandwich wall. The one-layer casing air inlet sandwich wall space causes one gas collision and counter-collision heat generation process, the two-layer casing air inlet sandwich wall space causes two gas collision and counter-collision heat generation processes, and the three-layer casing air inlet sandwich wall space causes three gas collision and counter-collision heat generation processes, and so on.

[0053] The casing air inlet sandwich wall structure technology is completely suitable for use at the casing air outlet, and the casing air outlet side wall can be made into a multi-layer sandwich wall structure for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a structural diagram of embodiment 1 of the present invention.

[0055] Figure 2 The figure is a schematic diagram of the casing sandwich wall space structure of the casing radial side wall according to the first embodiment of the present invention.

[0056] Figure 3 The figure is a schematic diagram of the casing sandwich wall space structure of the axial side wall of the casing according to the first embodiment of the present invention.

[0057] Figure 4 It is a schematic diagram of the expansion of the radial side wall of the casing according to the first embodiment of the present invention.

[0058] Figure 5 It is a schematic diagram of the structure of the axial side wall of the casing according to the first embodiment of the present invention.

[0059] Figure 6 It is a schematic diagram of the structure expansion of the empty cylinder collision heat generator according to the first embodiment of the present invention.

[0060] Figure 7This is a schematic diagram of the structure of the second embodiment of the present invention.

[0061] Figure 8 It is a schematic structural diagram of the radial side wall of the casing in the second embodiment of the present invention.

[0062] Fig. 9 It is a schematic diagram of the expansion of the radial side wall of the casing in the second embodiment of the present invention.

[0063] Fig.10 It is a schematic structural diagram of a hollow tube collision heat generator according to Embodiment 2 of the present invention.

[0064] Fig.11 It is a schematic diagram of the structure of the fan impeller in the second embodiment of the present invention.

[0065] Fig.12 This is a schematic diagram of the structure of the third embodiment of the present invention.

[0066] Fig.13 It is a schematic structural diagram of the axial side wall of the casing of the third embodiment of the present invention.

[0067] Fig.14 Schematic diagram of the structure of the fan impeller of the third embodiment of the present invention.

[0068] Fig.15 This is a structural diagram of embodiment 4 of the present invention.

[0069] Fig.16 It is a schematic structural diagram of a casing sandwich wall space collision heat generating chamber of the casing axial side wall of the fourth embodiment of the present invention.

[0070] Fig.17 It is a structural schematic diagram of the casing axial side wall hollow cylinder collision heat generator according to the fourth embodiment of the present invention.

[0071] Fig.18 Schematic diagram of the structure of the fan impeller of the fourth embodiment of the present invention.

[0072] Fig.19 Schematic diagram of the structure of the air inlet of the casing according to the fourth embodiment of the present invention.

[0073] Description of the main components in the figure:

[0074] 1. Casing; 2. Casing air inlet; 3. Casing air outlet; 4. Fan impeller; 5. Impeller blades; 6. Impeller air outlet; 7. Impeller disc; 8. Impeller inner flow channel; 9. Impeller sleeve; 10. Casing inner flow channel; 11. Casing radial side wall; 12. Casing axial side wall; 13. Casing sandwich wall outer wall; 14. Casing sandwich wall inner wall; 15. Casing sandwich wall space; 16. Screen mesh air holes; 17. Casing sandwich wall space isolation block; 18. Casing sandwich wall space collision heat generating chamber; 19. Empty cylinder collision heat generator; 20. Empty cylinder collision heat generator Device cavity; 21, second layer casing sandwich wall inner wall; 22, second layer casing sandwich wall space; 23, impeller disc sandwich wall outer wall; 24, impeller disc sandwich wall inner wall; 25, impeller disc sandwich wall space; 26, impeller radial side wall; 27, second layer impeller disc sandwich wall inner wall; 28, second layer impeller disc sandwich wall space; 29, casing air inlet sandwich wall outer wall; 30, casing air inlet sandwich wall inner wall; 31, casing air inlet sandwich wall space; 32, second layer casing air inlet sandwich wall inner wall; 33, second layer casing air inlet sandwich wall space; 34, motor. DETAILED DESCRIPTION

[0075] The technical solution of the present invention is described in detail below with reference to the accompanying drawings:

[0076] Embodiment 1

[0077] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6A pneumatic collision heat generating high temperature hot air blower comprises a casing 1, a casing air inlet 2, a casing air outlet 3, a fan impeller 4, an impeller blade 5, an impeller air outlet 6, an impeller disc 7, an impeller inner flow channel 8, an impeller shaft sleeve 9, a casing inner flow channel 10, a casing radial side wall 11, a casing axial side wall 12, the casing radial side wall 11 and the casing axial side wall 12 are both double-layer sandwich wall structures, the double-layer casing sandwich wall comprises a casing sandwich wall outer side wall 13 and a 50-mesh stainless steel screen to form a casing The inner wall 14 of the sandwich wall, the outer wall 13 of the housing sandwich wall and the inner wall 14 of the stainless steel mesh housing sandwich wall constitute a housing sandwich wall space 15. The mesh holes 16 of the inner wall 14 of the stainless steel mesh housing sandwich wall are connected to the housing sandwich wall space 15 internally and to the inner flow channel 10 of the housing externally. Ten steel plate strip sandwich wall space isolation blocks 17 are arranged in the radial housing sandwich wall space 15. The ten steel plate strip sandwich wall space isolation blocks divide the radial housing sandwich wall space into 10 mutually adjacent spaces. The mutually isolated and unconnected casing sandwich wall spaces collide with the heat generating chamber 18, and 20 steel plate strip sandwich wall space isolation blocks 17 of different lengths are arranged in the axial casing sandwich wall space 15. The 20 steel plate strip sandwich wall space isolation blocks divide the axial casing sandwich wall space 15 into 20 casing sandwich wall spaces of different sizes and collide with the heat generating chamber 18; the outer side of the stainless steel screen-type casing sandwich wall inner side wall 14 of the casing radial side wall 11 is provided with an axial cylindrical hollow cylinder made of 50-mesh stainless steel screen for collision and heat generating. Heater 19, the axial ends of the cylindrical hollow cylinder collision heat generator 19 are connected to the inner wall 14 of the stainless steel screen-type casing sandwich wall of the axial side wall, the radial side of the cylindrical hollow cylinder collision heat generator 19 is connected to the inner wall 14 of the stainless steel screen-type casing sandwich wall of the casing radial side wall 11, and the inner cavity 20 of the cylindrical hollow cylinder collision heat generator is connected to the casing sandwich wall space 15 of the casing radial side wall 11 through the mesh holes 16 of its mesh cylinder wall and the mesh holes 16 of the stainless steel screen-type casing sandwich wall inner wall 14.

[0078] In this example, a motor 34 is provided, and the motor shaft is connected to the fan impeller 4. The motor 34 directly drives the fan impeller 4 to rotate, so that the fan forms a heat generating working state.

[0079] This example is used for room ventilation and heating.

[0080] During operation, power is turned on to make the fan impeller 4 rotate at high speed, and cold air is sucked in from the air inlet 2 of the casing and processed into high-pressure and high-speed airflow. After the high-pressure and high-speed airflow is discharged from the fan impeller 4, it directly hits the inner wall 14 of the screen-type casing sandwich wall of the radial side wall 11 and the axial side wall 12 of the casing. With the help of the mesh holes on the inner wall 14 of the screen-type casing sandwich wall, when the high-pressure and high-speed airflow hits the inner wall 14 of the screen-type casing sandwich wall, it can not only make the high-pressure and high-speed airflow rush into the collision heat generating chamber 18 of the casing sandwich wall space, directly collide with the immediate original gas in the heat generating chamber to slow down and stop heat generation, but also make the high-temperature gas in the collision heat generating chamber 18 of the sandwich wall space after collision and stagnation of heat generation pass through the inner wall 14 of the screen-type casing sandwich wall to rush out of the collision heat generating chamber, and reversely collide with the cold air gas that is about to enter the collision heat generating chamber, slow down and stop heat generation, and the heat generating effect is double. Since the casing sandwich wall space 15 is divided into 30 mutually isolated sandwich wall space collision heat generating chambers 18, the cold air flow rushing into the collision heat generating chamber 18 through the mesh holes of the inner wall 14 of the screen-type casing sandwich wall cannot flow longitudinally and transversely in the casing sandwich wall space 15, but can only rush in and out of the casing sandwich wall space collision heat generating chamber along the inside and outside directions of the sandwich wall, thereby promoting a good collision effect, so the heat generating efficiency is high and more heat is generated.

[0081] Since the cylindrical hollow cylinder collision heat generator 19 composed of an axial screen is provided on the outer side of the inner side wall 14 of the casing sandwich wall of the casing radial side wall 11 in this example, the high-pressure and high-speed airflow gas in the inner flow channel 10 of the casing passes through the screen mesh air holes 16 of the cylindrical hollow cylinder collision heat generator cylinder wall during operation, and the existing high-pressure gas in the inner cavity 20 of the collision heat generator is decelerated and decompressed to generate heat. At the same time, the existing high-pressure gas in the inner cavity of the cylindrical hollow cylinder collision heat generator passes through the screen mesh air holes of the cylindrical hollow cylinder collision heat generator cylinder wall, and reversely collides with the high-pressure and high-speed airflow gas from the inner flow channel 10 of the casing, decelerating and decompressing to generate heat. In this way, the gas in the inner cavity of the cylindrical hollow cylinder collision heat generator generates heat through collision and reverse collision, and becomes high-temperature hot air. The high-temperature hot air then passes through the screen mesh air holes of the cylindrical hollow cylinder collision heat generator cylinder wall and the screen mesh air holes of the inner side wall 14 of the casing sandwich wall, and flows into the collision heat generating chamber 18 of the casing sandwich wall space, and then generates heat through collision and reverse collision.

[0082] In this example, since two major heat generating components, namely the screen-type casing wall space collision heat generating chamber and the screen-type cylindrical hollow barrel collision heat generator, are provided, when working, the high-pressure and high-speed air flow collides and reverse-collides with these two components to generate heat at the same time, so the heat generating effect is good and the thermal efficiency is high, and a large flow rate of pure high-temperature hot air of >100℃ can be produced for ventilation and heating.

[0083] Embodiment 2

[0084] refer to Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 This example is basically the same as Example 1, except that in this example, a 30-mesh screen-type second-layer casing sandwich wall inner side wall 21 is provided on the outer side of the casing sandwich wall inner side wall 14 of the casing radial side wall 11, and the screen-type second-layer casing sandwich wall inner side wall 21 and the screen-type casing sandwich wall inner side wall 14 constitute a second-layer casing sandwich wall space 22, and a casing sandwich wall space isolation block 17 made of 10 steel strips is provided in the second-layer casing sandwich wall space, and the steel strip sandwich wall space isolation block 17 divides the second-layer casing sandwich wall space into 10 casing sandwich wall space collision heat generating chambers 18 that are isolated from each other.

[0085] The second difference of this example is that a second-layer cylindrical hollow cylinder collision heat generator 19 made of 30-mesh stainless steel mesh is provided on the outer side of the second-layer casing sandwich wall inner side wall 21 of the casing radial side wall 11, and the axial ends of the cylindrical hollow cylinder collision heat generator 19 are connected to the casing inner side wall 14 of the casing axial side wall 12, and the radial side of the second-layer cylindrical hollow cylinder collision heat generator 19 is connected to the stainless steel screen-type second-layer casing sandwich wall inner side wall 21 of the casing radial side wall 11, and the inner cavity of the second-layer cylindrical hollow cylinder collision heat generator is connected to the second-layer casing sandwich wall space 22 of the casing radial side wall 11 through the sieve mesh pores of its cylinder wall and the sieve mesh pores of the stainless steel screen-type second-layer casing sandwich wall inner side wall 21.

[0086] The third difference of this example is that the front and rear blade discs of the fan impeller 4 are made of sieve steel plates with a mesh size of 3 mm, and the air holes of the impeller disc mesh are connected to the outer space of the impeller externally and to the inner flow channel 8 of the impeller internally.

[0087] During operation, the high-pressure and high-speed airflow gas discharged from the impeller in the flow channel inside the casing first collides and rushes into the radial side wall 11 of the casing, the screen-type second-layer cylindrical hollow cylinder collision heat generator 19 outside the inner side wall 21 of the screen-type second-layer casing sandwich wall, and the screen-type second-layer casing sandwich wall space collision heat generating chamber 18, and collides with the second-layer cylindrical hollow cylinder collision heat generator 19 and the second-layer casing sandwich wall space collision heat generating chamber 18 to generate heat; at the same time, with the help of the reaction force, the second-layer cylindrical hollow cylinder collision heat generator 19 and the second-layer casing sandwich wall space collision heat generating chamber 18 are The immediate existing high-pressure gas in the collision heat generator 19 and the heat generating chamber 18 in the second-layer casing sandwich space collides with the high-pressure and high-speed airflow gas discharged from the fan impeller 4 to generate heat; the high-temperature gas generated by collision and reverse collision in the second-layer cylindrical hollow tube collision heat generator collides into the collision heat generating chamber 18 in the second-layer casing sandwich space, and the high-temperature gas generated by collision and reverse collision in the collision heat generating chamber 18 in the second-layer casing sandwich space collides into the collision heat generating chamber 18 in the casing sandwich space again, and then performs collision and reverse collision heat generation.

[0088] Since the front impeller disk and the rear impeller disk of the fan impeller in this example are both of screen structure type, when working, a high-pressure and high-speed airflow gas is formed on the outside of the high-speed rotating impeller. The high-pressure and high-speed airflow gas collides with the high-pressure gas in the inner space of the impeller through the air holes of the impeller disk screen mesh to slow down, stagnate and generate heat. At the same time, the high-pressure gas inside the impeller uses its reaction force to reversely collide with the high-speed airflow gas from the outer space of the impeller through the air holes of the impeller disk screen mesh to slow down, stagnate and generate heat, thereby turning the low-temperature gas on the outside and inside of the fan impeller 4 into high-temperature gas, which is then discharged from the impeller and discharged into the flow channel inside the casing.

[0089] In this example, heat is generated by the collision of the heat generating chamber 18 of the casing axial side wall 12 and the casing sandwich wall space, the collision of the heat generating chamber of the casing radial side wall 11 and the double-layer cylindrical hollow tube collision heat generator, and the collision and back-collision of the large body structural components of the screen-type fan impeller disc. Therefore, the heat generating effect is good and the thermal efficiency is high, and pure high-temperature hot air of >200°C can be generated for people to use.

[0090] This example is suitable for making general high-temperature heat machines for people's daily heating, drying, baking, etc.

[0091] Embodiment 3

[0092] refer to Fig.12 , Fig.13 , Fig.14 This example is basically the same as Example 2, except that the outer side of the inner side wall 14 of the housing sandwich wall of the housing axial side wall 12 of this example is provided with a 30-mesh steel mesh second-layer housing sandwich wall inner side wall 21, and a second-layer sandwich wall space collision heat generating chamber 22.

[0093] The second difference is that the impeller disc 7 of the fan impeller 4 in this example is a double-layer sandwich wall structure, the double-layer sandwich wall includes an impeller disc sandwich wall outer wall 23, an impeller disc sandwich wall inner wall 24, the impeller disc sandwich wall outer wall 23 and the impeller disc sandwich wall inner wall 24 constitute an impeller disc sandwich wall space 25, the impeller disc sandwich wall outer wall 23 is made of a 3 mm mesh screen steel plate, and the impeller disc sandwich wall inner wall 24 is made of a 2 mm mesh screen steel plate.

[0094] When this example is working, the working principle and working state of the radial side wall 11 of the casing are the same as those in Example 2. Since the axial side wall 12 of the casing is additionally provided with a 30-mesh steel mesh type second-layer casing sandwich wall inner side wall 21 and a second-layer casing sandwich wall space collision heat generating chamber, when working, the high-pressure and high-speed airflow in the flow channel inside the casing will first hit the 30-mesh screen type second-layer casing sandwich wall space collision heat generating chamber 18 for collision heat generation, and then hit the casing sandwich wall space collision heat generating chamber 18 for collision heat generation. For the axial side wall 12 of the casing, compared with Example 3, the collision heat generating process of the second-layer casing sandwich wall space collision heat generating chamber 18 is added, so more heat is generated and the gas temperature rises higher.

[0095] Since the front impeller disk and the rear impeller disk of the fan impeller 4 in this example are both of the screen-walled structure, when working, the impeller rotates at high speed, which can form a high-pressure and high-speed airflow in the outer space of the impeller, and a high-pressure air mass in the impeller disk wall space 25 and the impeller inner space flow channel. The high-speed and high-pressure airflow on the outer side of the impeller and the high-pressure air mass in the impeller disk wall space and the impeller inner space flow channel undergo double collision and counter-collision to generate heat through the impeller disk wall space 25 and the impeller inner space flow channel, thereby generating a lot of heat and causing the gas temperature to rise high.

[0096] In this example, heat is generated by multiple repeated collisions between several major components, such as the double-layer casing sandwich wall space of the casing radial side wall 11 and the casing axial side wall 12, the double-layer axial cylindrical hollow cylinder collision heat generator 19, and the double-layer sandwich wall space 25 of the fan impeller impeller disk and the flow channel of the inner space of the impeller. Therefore, the heat generation effect is better and the thermal efficiency is higher, and pure high-temperature hot air of >300℃ can be generated for people to use.

[0097] This example is suitable for making a general high-temperature hot air blower for people to use for drying, baking and food processing.

[0098] Embodiment 4

[0099] refer to Fig.15 , Fig.16 , Fig.17 , Fig.18 , Fig.19 This example is basically the same as Example 3, except that in this example, a cylindrical hollow cylinder collision heat generator 19 made of a radial 30-mesh stainless steel screen is provided on the outer side of the screen-type second-layer casing sandwich wall inner side wall 21 of the casing axial side wall 12, and the axial side of the cylindrical hollow cylinder collision heat generator 19 is connected to the screen-type second-layer casing sandwich wall inner side wall 21 of the casing axial side wall 12, and the inner cavity of the cylindrical hollow cylinder collision heat generator is connected to the second-layer casing sandwich wall space collision heat generating chamber 18 through the cylinder wall screen mesh air holes 16 and the second-layer casing sandwich wall inner side wall 21 screen mesh air holes 16.

[0100] The second difference is that the impeller disc 7 of the fan impeller 4 in this example is a three-layer sandwich wall structure, and the three-layer sandwich wall of the impeller disc includes an outer wall 23 of the impeller disc sandwich wall, an inner wall 24 of the impeller disc sandwich wall, and an inner wall 27 of the second layer of the impeller disc sandwich wall. The inner wall 24 of the impeller disc sandwich wall and the outer wall 23 of the impeller disc sandwich wall constitute an impeller disc sandwich wall space 25, and the inner wall 24 of the impeller disc sandwich wall and the inner wall 27 of the second layer of the impeller disc sandwich wall constitute a second layer of the impeller disc sandwich wall space 28. The outer wall 23 of the impeller disc sandwich wall is made of a mesh steel plate with a mesh size of 4 mm, the inner wall 24 of the impeller disc sandwich wall is made of a mesh steel plate with a mesh size of 3 mm, and the inner wall 27 of the second layer of the impeller disc sandwich wall is made of a mesh steel plate with a mesh size of 2 mm.

[0101] The third difference is that the casing air inlet 2 of this example adopts a three-layer sandwich wall structure, and the three-layer sandwich wall includes a casing air inlet sandwich wall outer wall 29, a casing air inlet sandwich wall inner wall 30, and a second-layer casing air inlet sandwich wall inner wall 32. The casing air inlet sandwich wall outer wall 29 and the casing air inlet sandwich wall inner wall 30 constitute a casing air inlet sandwich wall space 31, and the air inlet sandwich wall inner wall 30 and the second-layer air inlet sandwich wall inner wall 32 constitute a second-layer casing air inlet sandwich wall space 33. The casing air inlet sandwich wall outer wall 29 is made of airtight steel plate, the casing air inlet sandwich wall inner wall 30 is made of 40-mesh steel wire mesh, and the second-layer casing air inlet sandwich wall inner wall 32 is made of 20-mesh steel wire mesh.

[0102] When this example is working, the working principle and working state of the radial side wall 11 of the casing are the same as those in Example 3, while the axial side wall 12 of the casing is additionally provided with a cylindrical hollow cylinder collision heat generator 19 made of a radial 30-mesh stainless steel screen. When working, the high-pressure and high-speed airflow in the flow channel inside the casing first hits the cylindrical hollow cylinder collision heat generator 19 made of a radial 30-mesh steel wire mesh for collision heat generation, and then hits the second-layer casing sandwich space collision heat generation chamber 18 and the casing sandwich space collision heat generation chamber 18 in turn for collision heat generation. For the axial side wall 12 of the casing, compared with Example 3, a collision heat generation process of the cylindrical hollow cylinder collision heat generator is added, so that more heat is generated and the gas temperature rises higher.

[0103] Since the impeller disk 7 of the fan impeller 4 in this example adopts a three-layer sandwich wall structure, compared with Example 2, an additional layer of impeller disk sandwich wall space is added, and an impeller disk collision heat generation process is added, which can increase some extra heat during operation.

[0104] Since the air inlet 2 of the casing in this example adopts a three-layer sandwich wall structure, the three-layer air inlet sandwich wall constitutes the casing air inlet sandwich wall space 31 and the second layer of casing air inlet sandwich wall space 33. During operation, the cold air entering the casing air inlet 2 must first undergo two collision heat generation processes to generate heat to form warm air, and the warm air is then sucked into the fan impeller 4 to be processed into high-pressure and high-speed warm air and discharged into the inner flow channel of the casing, and then collides with the radial side wall 11 of the casing and the axial side wall cylindrical hollow cylinder collision heat generator 19, the casing sandwich wall space collision heat generating chamber 18, the first layer of cylindrical hollow cylinder collision heat generator 19, the first layer of casing sandwich wall space collision heat generating chamber 18 and other components to perform collision and reverse collision heat generation.

[0105] Obviously, there are many hot air processing parts in this example, and the processing workflow is longer. The high-power high-temperature hot air machine in this example can process >500℃ large-flow pure ultra-high temperature hot air for people's special production and life requirements.

[0106] This example is suitable for making large and medium-sized ultra-high temperature hot air blowers.

Claims

1. A pneumatic collision heat generating high temperature hot air blower, comprising a casing (1), a casing air inlet (2), a casing air outlet (3), a fan impeller (4), impeller blades (5), an impeller air outlet (6), an impeller disk (7), an impeller inner flow channel (8), an impeller shaft sleeve (9), a casing inner flow channel (10), a casing radial side wall (11) and a casing axial side wall (12), wherein the casing radial side wall (11) and the casing axial side wall (12) are both double-layer sandwich wall structures, the double-layer sandwich wall comprises a casing sandwich wall outer wall (13) and a casing sandwich wall inner wall (14), the casing sandwich wall outer wall (13) and the casing sandwich wall inner wall (14) constitute a casing sandwich wall space (15), characterized in that: The inner wall (14) of the casing sandwich wall is a screen structure. The screen mesh pores (16) of the inner wall (14) of the casing sandwich wall are connected to the casing sandwich wall space (15) internally and to the flow channel (10) inside the casing externally. A plurality of casing sandwich wall space isolation blocks (17) are arranged in the casing sandwich wall space (15). The casing sandwich wall space isolation blocks (17) divide the entire sandwich wall space into a plurality of casing sandwich wall space collision heat generating chambers (18) isolated from each other. The inner wall (14) of the casing radial side wall (11) of the casing sandwich wall is connected to the casing sandwich wall space (15). An axial empty cylinder collision heat generator (19) is provided on the outside of the casing 14. The cylinder wall of the empty cylinder collision heat generator (19) is a screen structure. The axial ends of the empty cylinder collision heat generator (19) are connected to the inner wall (14) of the casing sandwich wall of the casing axial side wall (12). The inner cavity (20) of the empty cylinder collision heat generator is connected to the casing sandwich wall space (15) of the casing radial side wall (11) through the screen mesh pores (16) and the screen mesh pores (16) of the inner wall (14) of the casing sandwich wall.

2. The pneumatic collision heat generating high temperature hot air blower as claimed in claim 1, characterized in that: A second layer of the casing sandwich wall inner side wall (21) is provided outside the casing sandwich wall inner side wall (14) of the casing radial side wall (11), the second layer of the casing sandwich wall inner side wall (21) is a screen structure, the second layer of the casing sandwich wall inner side wall (21) with a screen structure and the casing sandwich wall inner side wall (14) with a screen structure form a second layer of the casing sandwich wall space (22), the casing sandwich wall space (15) and the second layer of the casing sandwich wall space (22) are connected to each other through the screen mesh pores (16) on the casing sandwich wall inner side wall (14), and the screen mesh of the second layer of the casing sandwich wall inner side wall (21) is formed. The mesh pores (16) are internally connected to the second-layer casing sandwich wall space (22) and externally connected to the casing inner flow channel (10); a plurality of casing sandwich wall space isolation blocks (17) are arranged in the second-layer casing sandwich wall space (22), and the casing sandwich wall space isolation blocks (17) divide and isolate the second-layer casing sandwich wall space (22) into a plurality of casing sandwich wall space collision heat generating chambers (18) that are isolated from each other; an axial hollow cylinder collision heat generator (19) is arranged on the outer side of the inner side wall (21) of the second-layer casing sandwich wall, and the hollow cylinder collision heat generator (19) has a screen structure. The axial ends of the empty cylinder collision heat generator (19) are connected to the inner side wall (14) of the casing sandwich wall of the axial side wall (12) of the casing, and the inner cavity (20) of the empty cylinder collision heat generator is connected to the space (22) of the second casing sandwich wall through the mesh holes (16) and the mesh holes (16) of the inner side wall (21) of the second casing sandwich wall.

3. The pneumatic collision heat generating high temperature hot air blower as claimed in claim 1, characterized in that: A radial empty cylinder collision heat generator (19) is provided on the outer side of the inner side wall (14) of the casing sandwich wall of the axial side wall (12) of the casing. The cylinder wall of the empty cylinder collision heat generator (19) is a screen structure. The axial side of the empty cylinder collision heat generator (19) is connected to the inner side wall (14) of the casing sandwich wall. The inner cavity (20) of the empty cylinder collision heat generator is connected to the casing sandwich wall space (15) through the screen mesh pores (16) and the screen mesh pores (16) of the inner side wall (14) of the casing sandwich wall.

4. The pneumatic collision heat generating high temperature hot air blower as claimed in claim 1, characterized in that: A second layer of the casing sandwich wall inner side wall (21) is provided outside the casing sandwich wall inner side wall (14) of the casing axial side wall (12), the second layer of the casing sandwich wall inner side wall (21) is a screen structure, the second layer of the casing sandwich wall inner side wall (21) with a screen structure and the casing sandwich wall inner side wall (14) with a screen structure form a second layer of the casing sandwich wall space (22), and the casing sandwich wall space (15) and the second layer of the casing sandwich wall space (22) are airtightly connected through the screen mesh on the casing sandwich wall inner side wall (14). The holes (16) are interconnected; the mesh pores (16) of the inner wall (21) of the second-layer casing sandwich wall are internally connected to the second-layer casing sandwich wall space (22) and externally connected to the casing inner flow channel (10); a plurality of casing sandwich wall space isolation blocks (17) are provided in the second-layer casing sandwich wall space (22); the casing sandwich wall space isolation blocks (17) divide and isolate the second-layer casing sandwich wall space (22) into a plurality of casing sandwich wall space collision heat generating chambers (18) that are isolated from each other.

5. The pneumatic collision heat generating high temperature hot air blower as claimed in claim 4, characterized in that: A radial hollow cylinder collision heat generator (19) is provided on the outer side of the inner side wall (21) of the second layer of the casing sandwich wall of the casing axial side wall (12); the hollow cylinder collision heat generator (19) has a cylinder wall of a screen structure; the hollow cylinder collision heat generator (19) is connected to the inner side wall (21) of the second layer of the casing sandwich wall on the axial side; the inner cavity (20) of the hollow cylinder collision heat generator is connected to the space (22) of the second layer of the casing sandwich wall through the screen mesh pores (16) and the screen mesh pores (16) of the inner side wall of the second layer of the casing sandwich wall.

6. The pneumatic collision heat generating high temperature hot air blower as claimed in claim 1 or 2 or 3 or 4 or 5, characterized in that: The impeller disc (7) of the fan impeller (4) is of a screen structure, and the impeller disc screen mesh air holes (16) are internally connected to the impeller inner flow channel (8) and externally connected to the outer space of the impeller.

7. The pneumatic collision heat generating high temperature hot air blower as claimed in claim 1 or 2 or 3 or 4 or 5, characterized in that: The impeller disc (7) of the fan impeller (4) is of a sandwich wall structure. The impeller disc sandwich wall is composed of an impeller disc sandwich wall outer wall (23) and an impeller disc sandwich wall inner wall (24) to form an impeller disc sandwich wall space (25). The impeller disc sandwich wall space (25) is connected to the outer space of the impeller through the mesh holes (16) of the impeller disc sandwich wall outer wall (23), and is connected to the inner flow channel (8) of the impeller through the mesh holes (16) of the impeller disc sandwich wall inner wall (24).

8. The pneumatic collision heat generating high temperature hot air blower according to any one of claims 1 to 5, characterized in that: The side wall of the air inlet (2) of the casing is of a sandwich wall structure, the casing air inlet sandwich wall comprises an outer wall (29) of the casing air inlet sandwich wall and an inner wall (30) of the casing air inlet sandwich wall, the outer wall (29) of the casing air inlet sandwich wall and the inner wall (30) of the casing air inlet sandwich wall constitute a casing air inlet sandwich wall space (31), the inner wall (30) of the casing air inlet sandwich wall is of a screen structure, and the casing air inlet sandwich wall space (31) is connected to the inner flow channel of the casing air inlet (2) through the screen mesh pores of the inner wall (30) of the casing air inlet sandwich wall.

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