Vortex tube snow blowing vehicle

Abstract

The invention discloses a vortex tube snow blowing vehicle which comprises a vehicle chassis, a vortex tube assembly, a control valve assembly, an air injection pipeline and a nozzle, the vortex tube assembly comprises a vortex tube shell, an air inlet and outlet shell, an air compressor impeller and a motor, the motor is provided with a hollow rotating shaft, and the air compressor impeller is fixedly installed on the hollow rotating shaft; a central channel of the hollow rotating shaft forms an exhaust channel, the tail end of the vortex tube shell is connected with an air inlet and exhaust shell, when the compressor impeller rotates, air is sucked through the air inlet and exhaust shell, vortex airflow is generated in an annular cavity formed by the motor and the vortex tube shell, and the control valve assembly is arranged at the head end of the vortex tube shell and provided with a valve seat and an axially-moving valve element. The valve element comprises a ventilation section and a tail end cone, the size of an annular air inlet gap formed by the ventilation section and the valve seat is changed when the valve element moves, the tail end of the air injection pipeline is communicated with the central air channel, and the nozzle is arranged at the head end of the air injection pipeline. The snow blowing airflow output by the snow blowing device is appropriate in temperature, and the snow blowing device has the advantages of simple structure, high reliability and low energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of road cleaning, and in particular to a vortex tube snowblowing vehicle. Background Art

[0002] Snowblower is a special vehicle for winter maintenance that can quickly clear ice and snow from airport runways and roads. Existing snowblowers usually include cold-blowing and hot-blowing snowblowers.

[0003] Cold-blowing snow blowers primarily use a vehicle-mounted fan to quickly clear snow from the road using high-speed airflow to blow snow to the roadside, as exemplified by the technical solutions disclosed in publications CN113026648A and CN109610398A. However, cold-blowing snow blowers often struggle to effectively clear snow and ice from the road when the snow is compacted or frozen.

[0004] The hot-blowing method usually uses a large amount of high-temperature, high-speed combustion gas ejected from a hot air machine discharged from an aircraft turbojet engine to blow away ice and snow. Technical solutions disclosed in publication numbers CN104074164A and CN203113269U can effectively remove solid snow and frozen snow on the road surface, but the fuel consumption is very high and the noise is particularly strong. The high-speed, high-temperature combustion gas discharged can cause serious damage to the road surface, green belts and pedestrians. Summary of the Invention

[0005] In view of the above-mentioned defects of the prior art, the purpose of the present invention is to provide a vortex tube snowblowing vehicle to solve the problems of poor snow removal effect of ordinary cold blowers on icy roads, and the energy consumption, noise and high temperature problems of using turbojet engines.

[0006] The technical solution of the present invention is as follows: A vortex tube snowblowing vehicle comprises a vehicle chassis, a vortex tube assembly, a control valve assembly, an air jet pipeline and a nozzle, wherein the vortex tube assembly is installed on the vehicle chassis, the vortex tube assembly comprises a vortex tube housing, an intake and exhaust casing, a compressor impeller and a motor, the motor is arranged in the vortex tube housing and is located at the end of the vortex tube housing, the motor has a hollow shaft, the compressor impeller is fixedly mounted on the hollow shaft, the central channel of the hollow shaft forms an exhaust channel, the end of the vortex tube housing is connected to the intake and exhaust casing, and when the compressor impeller rotates, air is sucked in and discharged through the intake and exhaust casing A vortex airflow is generated in an annular cavity formed by the motor and the vortex tube housing. The control valve assembly is arranged at the head end of the vortex tube housing. The control valve assembly includes a valve seat and an axially movable valve core. The valve core includes a ventilation section and an end cone. The ventilation section has a central air channel. The central air channel forms an air inlet on the circumferential side of the ventilation section. An annular air inlet gap connected to the air inlet is formed between the valve seat and the ventilation section. The size of the annular air inlet gap changes when the valve core moves. The end of the jet pipeline is connected to the central air channel. The nozzle is arranged at the head end of the jet pipeline for spraying air to the ground.

[0007] Furthermore, a diffuser section is provided at the end of the vortex tube housing, and when the compressor impeller rotates, air is drawn in through the intake and exhaust casing and decelerated and pressurized in the diffuser section.

[0008] Furthermore, the hollow rotating shaft of the motor is coaxially arranged with the vortex tube housing.

[0009] Furthermore, in order to facilitate the control of the movement of the valve core, the valve seat is provided with a valve stem, one end of the valve stem is an eccentric shaft section, and the circumferential side of the ventilation section of the valve core is provided with a groove that cooperates with the eccentric shaft section.

[0010] Furthermore, a rotary control handle is installed on the valve stem.

[0011] Furthermore, the front end of the vortex tube housing is connected to the inlet end of the valve seat, and the end of the air injection pipeline is connected to the outlet end of the valve seat.

[0012] Furthermore, the nozzle is arranged below the front of the vortex tube snowblowing vehicle, and the jet pipeline is arranged below the cab of the vortex tube snowblowing vehicle.

[0013] Furthermore, the vortex tube assembly and the control valve assembly are provided in pairs in a plurality of groups and are symmetrically arranged on both sides of the vehicle chassis.

[0014] Furthermore, the nozzle is a trumpet-shaped expansion structure.

[0015] Furthermore, the vortex tube snowblowing vehicle includes a generator set, which is installed on the vehicle chassis and supplies power to the motor.

[0016] Compared with the prior art, the advantages of the technical solution provided by the present invention are:

[0017] The vortex tube snowblower vehicle of the present invention comprises a vortex tube housing, a motor, and a control valve assembly to form a vortex tube structure. The compressor impeller rotates to generate a vortex airflow, which then passes through the vortex tube structure to produce separated cold and hot airflows. The hot airflow temperature can be tens of degrees higher than the ambient temperature, melting both solid and frozen snow on the road surface while causing little damage to the road surface, roadside plants, and buildings. The present invention does not require a turbojet engine or additional heating device. Instead, the motor drives the compressor impeller, resulting in high drive efficiency and low noise. The compressor impeller speed and air displacement can be easily and flexibly controlled. Furthermore, the overall structure is compact, lightweight, and beneficial for reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of a vortex tube snowblowing vehicle according to an embodiment.

[0019] Figure 2 Schematic diagram of the structure of the vortex tube assembly.

[0020] Figure 3 It is a structural diagram of the control valve assembly.

[0021] Figure 4 Schematic diagram of the valve core structure.

[0022] Figure 5 Schematic diagram of the structure of the jet pipeline and nozzle. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the following examples. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading this description, various equivalent modifications to this description by those skilled in the art fall within the scope defined by the claims appended to this application.

[0024] Please combine Figure 1 、 Figure 5 As shown, the vortex tube snowblowing vehicle of this embodiment includes a vehicle chassis 1, a vortex tube assembly 2, a control valve assembly 3, an air jet line 4, a nozzle 5 and a generator set 6, wherein the vortex tube assembly 2 and the generator set 6 are installed on the vehicle chassis 1.

[0025] The generator set 6 is generally a diesel generator set 6, which is the power source for the vortex tube assembly 2 to realize the airflow supercharged rotation and ejection. The generator set 6 is arranged in the middle of the vehicle chassis 1 and is fixed to the vehicle chassis 1. The generator set 6 adopts the existing structure in the prior art and will not be described in detail.

[0026] Please combine Figure 2 As shown, vortex tube assemblies 2 are arranged on both sides of the vehicle chassis 1, generally in a symmetrical arrangement. Multiple vortex tube assemblies 2 can be arranged on each side of the vehicle chassis 1 as needed. The vortex tube assemblies 2 are connected to the vehicle chassis 1 via brackets (not shown). The head end of each vortex tube assembly 2 is connected to a control valve assembly 3. The vortex tube assemblies 2 and the control valve assemblies 3 form a vortex tube structure to achieve hot and cold airflow separation.

[0027] Specifically, the vortex tube assembly 2 includes a vortex tube housing 201, an intake and exhaust casing 202, a compressor impeller 203, and a motor. From the beginning to the end, the vortex tube housing 201 comprises a straight tube section 201a, a motor section 201b, and a diffuser section 201c. The straight tube section 201a and the motor section 201b are integrally formed, with the diffuser section 201c bolted to the end of the motor section 201b. The intake and exhaust casing 202 is also bolted to the end of the diffuser section 201c. The motor is mounted in the center of the motor section 201b. In this embodiment, the diameter of the motor section 201b is slightly larger than that of the straight tube section 201a. The motor includes a motor housing 204, a motor winding 205, and a rotor. The motor winding 205 is fixedly mounted in the motor housing 204 and axially positioned by a pressure cap 207 at the end of the motor housing 204. An annular cavity 7 is formed between the outer side of the motor housing 204 and the motor pipe section 201b of the vortex tube housing 201 for airflow to pass through. The rotor has a hollow shaft 206, which is coaxial with the vortex tube housing 201. One end (left end) of the rotor is supported on the motor housing 204 by a bearing and axially positioned by an end cap 208, and the other end (right end) of the rotor is supported on the diffuser section 201c by a bearing. The compressor impeller 203 is fixedly mounted on the right end of the hollow shaft 206. The generator set 6 supplies power to the motor. When the motor is working, the compressor impeller 203 rotates and draws air through the intake and exhaust casing 202. The air is decelerated and pressurized by the diffuser section 201c to form a vortex airflow in the annular cavity 7. The central channel 206 a of the hollow rotating shaft 206 forms an exhaust channel for cooling air to be discharged rearward through the intake and exhaust casing 202 .

[0028] Please combine Figure 3 、 Figure 4As shown, the control valve assembly 3 comprises a valve seat 301, a valve core 302, a control handle 303, a gasket 304, a valve stem 305, a valve cover 306, and a nylon bushing 307. The valve core 302 engages with the inner hole of the valve seat 301 and is axially movable within the valve seat 301. A rotatable valve stem 305 is mounted on the valve seat 301, and a nylon bushing 307 is installed in a hole in the side wall of the valve seat 301. The lower section of the valve stem 305 engages with the nylon bushing 307, while the upper section of the valve stem 305 has a square cross-section and engages with the square inner hole of the control handle 303. The upper end of the valve cover 306 engages with a hole in the side wall of the valve seat 301, and the upper end is secured with a nut. The valve cover 306 engages with a hole in the side wall of the valve seat 301, and its upper end is connected to the upper flange of the valve seat 301 via screws. The gasket 304 is located between the valve cover 306 and the control handle 303. The valve cover 306 is used for axial fixation of the valve stem 305 and the nylon bushing 307. The bottom end of the valve stem 305 is an eccentric shaft section.

[0029] The valve core 302 includes a vent section 302a and an end cone 302b, which is connected to the right end of the vent section 302a. The vent section 302a has a central air passage 302c. The majority of the vent section 302a mates with the inner bore of the valve seat 301. An annular groove 302d is provided at the junction of the vent section 302a and the end cone 302b. This annular groove 302d forms an annular air intake gap with the sidewall of the valve seat 301. The central air passage 302c of the vent section 302a forms an air inlet 302e around the vent section 302a. The air inlet 302e is located within the annular groove 302d. Therefore, air entering through the annular air intake gap can enter the central air passage 302c through the air inlet 302e and be discharged from the left end of the valve core 302. A groove 302f is provided on the peripheral side of the ventilation section 302a of the valve core 302, and the groove 302f cooperates with the eccentric shaft section at the bottom end of the valve stem 305. When the control handle 303 and the valve stem 305 are rotated, the eccentric shaft section at the bottom end of the valve stem 305 contacts the groove 302f, driving the valve core 302 to move axially in the valve seat 301, thereby adjusting the opening size of the annular air inlet gap at the right end of the valve seat 301.

[0030] The valve seat 301 is bolted to the head flange 201d of the vortex tube housing 201 and the end flange 401 of the air jet line 4, respectively. The inlet end is connected to the vortex tube housing 201, and the outlet end is connected to the air jet line 4. The air jet line 4 communicates with the central air duct 302c, and the airflow discharged from the central air duct 302c enters the air jet line 4. The air jet line 4 extends through the space below the cab and above the front wheels to the front of the vehicle. The nozzle 5 with a trumpet-shaped flared structure is located below the front of the vortex tube snowblower and connects to the air jet line 4 without obstructing the vehicle's field of view.

[0031] The vortex tube snowblower vehicle operates as follows: Generator set 6 generates electricity to power the compressor motor, which in turn drives the compressor impeller 203, drawing air from the intake and exhaust casing 202 and forming a vortex airflow in the diffuser section 201c. The vortex tube structure is composed of an annular cavity 7 formed between the outer side of the motor casing 204 and the motor pipe section 201b of the vortex tube casing 201, the central channel 206a of the hollow shaft, the end cone 302b of the valve core 302 in the control valve assembly 3, and the annular intake gap. The hot air generated by the vortex tube structure passes through the annular intake gap of the control valve assembly 3, from the central air channel 302c to the air injection pipe 4. Finally, a nozzle 5 controls the airflow direction and blows it toward the road surface, achieving the purpose of melting snow. The size of the annular intake gap is adjusted to control the temperature and flow rate of the final hot air flow to meet environmental requirements. The cold air generated by the vortex tube structure then passes through the central channel 206a of the hollow shaft to form an exhaust channel, and is discharged through the intake and exhaust casing 202 to the rear of the vehicle.

Claims

1. A vortex tube snowblowing vehicle, characterized in that: The invention comprises a vehicle chassis, a vortex tube assembly, a control valve assembly, an air jet line and a nozzle, wherein the vortex tube assembly is installed on the vehicle chassis, the vortex tube assembly comprises a vortex tube housing, an intake and exhaust casing, a compressor impeller and a motor, the motor is arranged in the vortex tube housing and is located at the end of the vortex tube housing, the motor has a hollow shaft, the compressor impeller is fixedly mounted on the hollow shaft, the central channel of the hollow shaft forms an exhaust channel, the end of the vortex tube housing is connected to the intake and exhaust casing, the compressor impeller rotates when the air is sucked in through the intake and exhaust casing and the motor and the vortex tube are connected. A vortex airflow is generated in the annular cavity formed by the tube shell. The control valve assembly is arranged at the head end of the vortex tube shell. The control valve assembly includes a valve seat and an axially movable valve core. The valve core includes a ventilation section and an end cone. The ventilation section has a central air channel. The central air channel forms an air inlet on the circumferential side of the ventilation section. An annular air inlet gap connected to the air inlet is formed between the valve seat and the ventilation section. The size of the annular air inlet gap changes when the valve core moves. The end of the jet pipeline is connected to the central air channel. The nozzle is arranged at the head end of the jet pipeline for spraying air to the ground.

2. The vortex tube snowblowing vehicle according to claim 1, characterized in that: A diffuser section is provided at the end of the vortex tube housing. When the compressor impeller rotates, air is drawn in through the intake and exhaust casing and decelerated and pressurized in the diffuser section.

3. The vortex tube snowblowing vehicle according to claim 1, characterized in that: The hollow rotating shaft of the motor is coaxially arranged with the vortex tube housing.

4. The vortex tube snowblowing vehicle according to claim 1, characterized in that: The valve seat is provided with a valve stem, the lower end of the valve stem is an eccentric shaft section, and the circumferential side of the ventilation section of the valve core is provided with a groove that matches the eccentric shaft section.

5. The vortex tube snowblowing vehicle according to claim 4, characterized in that: A rotary control handle is installed on the valve stem.

6. The vortex tube snowblowing vehicle according to claim 1, characterized in that: The front end of the vortex tube housing is connected to the inlet end of the valve seat, and the end of the air injection pipeline is connected to the outlet end of the valve seat.

7. The vortex tube snowblowing vehicle according to claim 1, characterized in that: The nozzle is arranged below the front of the vortex tube snowblowing vehicle, and the air jet pipeline is arranged below the cab of the vortex tube snowblowing vehicle.

8. The vortex tube snowblowing vehicle according to claim 1, characterized in that: The vortex tube assemblies and the control valve assemblies are provided in pairs in a plurality of groups and are symmetrically arranged on both sides of the vehicle chassis.

9. The vortex tube snowblowing vehicle according to claim 1, characterized in that: The nozzle is a trumpet-shaped expansion structure.

10. The vortex tube snowblowing vehicle according to claim 1, characterized in that: The vortex tube snowblowing vehicle includes a generator set installed on the vehicle chassis, and the generator set supplies power to the motor.

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