CN219242083U

CN219242083U - Cold starting device based on vortex tube and vehicle

Info

Publication number: CN219242083U
Application number: CN202223570758.8U
Authority: CN
Inventors: 石兴超; 付德华; 刘健美; 郭明春
Original assignee: Weichai Power Co Ltd; Weifang Weichai Power Technology Co Ltd
Current assignee: Weichai Power Co Ltd; Weifang Weichai Power Technology Co Ltd
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-06-23
Anticipated expiration: 2032-12-23

Abstract

The utility model provides a cold starting device based on a vortex tube and a vehicle; relates to the field of engine starting control; the air-heating type air-conditioning system aims at solving the problems of low air-heating type heating efficiency and poor effect of the existing air-heating type heating system, a compressed air tank is configured to provide compressed air for a vortex tube, the vortex tube is utilized to enable high-speed air flow to generate vortex flow to separate cold air flow and hot air flow, the cold air flow is used for refrigeration, hot air flow is mixed and is fed into an air cylinder of an engine, a good air environment is provided for cold start combustion of the engine, and the cold start efficiency of the engine is improved.

Description

Cold starting device based on vortex tube and vehicle

Technical Field

The utility model relates to the field of engine starting control, in particular to a cold starting device based on a vortex tube and a vehicle.

Background

After cold start of an engine in a low-temperature environment, the engine needs to be heated for a long time in most cases, and cannot enter a normal running state quickly after cold start in an emergency. At present, the cold start of the engine is assisted by an auxiliary heating mode, and the auxiliary heating mode mainly comprises an air heating mode and a water heating mode.

The air-heating type heater mixes and combusts fuel pumped into the combustion chamber and air through the oil pump, sucks cold air, absorbs heat generated by combustion through the heat exchanger, changes low-temperature air into warm air and blows out from the air outlet, and heats the engine; when the water heating type heater operates, fuel oil enters a heater host through an oil delivery pipe and is combusted, generated heat heats cooling liquid in a cooling water pipe, and the heated cooling liquid enters an engine to heat a system; however, the combustion of the cooling water or the intake air tends to be insufficient and waste fuel, and the efficiency is relatively low, and the heat conduction is used to raise the temperature of the air or the system with a large hysteresis, so that the engine cannot be started quickly in an emergency.

Disclosure of Invention

The utility model aims at overcoming the defects of the prior art, and provides a cold starting device and a vehicle based on a vortex tube, which are provided with a compressed air tank for providing compressed air for the vortex tube, and the vortex tube is utilized to generate vortex flow for generating high-speed air flow to separate cold air flow and hot air flow, wherein the cold air flow is used for refrigeration, hot air flow is mixed and fed into a cylinder of an engine, a better air environment is provided for cold starting combustion of the engine, and the cold starting efficiency of the engine is improved.

The first object of the utility model is to provide a cold starting device based on a vortex tube, which adopts the following technical scheme:

the vortex tube is used for acquiring high-pressure gas in the compressed gas tank and forming hot air flow and cold air flow, and comprises a cold end for outputting the cold air flow and a hot end for outputting the hot air flow, wherein the hot end is connected with an air inlet pipe of an engine.

Further, a hot air pipe is arranged at the hot end of the vortex tube and is communicated with the air inlet pipe, and the direction of hot air flow in the hot air pipe entering the air inlet pipe is the same as or forms an acute angle with the direction of air flow in the air inlet pipe.

Further, the vortex tube comprises a body and a nozzle connected with the body, the hot end and the cold end are respectively arranged at two opposite ends of the body, a vortex chamber is arranged in the body and is respectively communicated with the cold end and the hot end, the nozzle is perpendicular to the body and is respectively communicated with the compressed air tank and the vortex chamber, the vortex chamber obtains gas output by the compressed air tank through the nozzle and forms vortex, the central gas flow of the vortex forms cold gas flow, and the outer gas flow of the vortex forms hot gas flow.

Further, a flow valve and a flowmeter are arranged on a pipeline of the nozzle connected with the compressed air tank.

Further, the hot end is provided with a regulating valve, and the regulating valve can regulate the flow ratio and the temperature ratio of the hot air flow and the cold air flow.

Further, the compressed air tank is connected with an air compressor through a pipeline, and the air compressor is used for compressing air and inputting the air into the compressed air tank.

Further, an air pressure sensor is arranged in the compressed air tank, the air pressure sensor and the air compressor are respectively connected to the controller, the air pressure sensor is used for measuring air pressure data in the compressed air tank and sending the air pressure data to the controller, and the controller is used for controlling the running state of the air compressor.

Further, a mixing chamber is formed in the region of the air inlet pipe, from which hot end hot air flow is obtained, and the hot air flow and air flow passing through the throttle valve are mixed in the mixing chamber and are jointly input into a cylinder of the engine.

Further, the throttle valve is positioned at the upstream of the mixing chamber, and the throttle valve is used for changing the mixing proportion of the air flow passing through the throttle valve and the hot end input hot air flow by adjusting the opening degree.

A second object of the utility model is to provide a vehicle using a vortex tube based cold start device as described in the first object.

Compared with the prior art, the utility model has the advantages and positive effects that:

(1) The air-heating type air-conditioning system aims at solving the problems of low air-heating type heating efficiency and poor effect of the existing air-heating type heating system, a compressed air tank is configured to provide compressed air for a vortex tube, the vortex tube is utilized to enable high-speed air flow to generate vortex flow to separate cold air flow and hot air flow, the cold air flow is used for refrigeration, hot air flow is mixed and is fed into an air cylinder of an engine, a good air environment is provided for cold start combustion of the engine, and the cold start efficiency of the engine is improved.

(2) The flow valve and the flowmeter are arranged between the compressed air tank and the vortex tube, the air flow input by the vortex tube is monitored and regulated, and the flow and the temperature of the hot air flow input by the vortex tube are controlled by combining the regulating valve, so that the requirements during cold start can be met.

(3) The air pressure sensor is arranged in the compressed air tank, the air pressure of the compressed air stored in the compressed air tank is measured, the controller controls the operation of the air compressor according to the measured air pressure, and the compressed air in the compressed air tank is supplemented in time, so that the compressed air in the compressed air tank can be kept in a required state, the required pressure air flow is ensured to be provided for the vortex tube, and the operation stability and efficiency of the whole device are improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

Fig. 1 is a schematic structural view of a cold start device based on a vortex tube in embodiments 1 and 2 of the present utility model.

In the figure, 1 air compressor, 2 compressed air tank, 3 vortex tube, 4 throttle valve, 5 intake pipe, 6 cylinder.

Detailed Description

Example 1

In an exemplary embodiment of the present utility model, as shown in fig. 1, a cold start device based on a vortex tube is provided.

At present, when an engine is started in a cold mode, an air heating mode or a water heating mode is adopted to heat the engine, fuel is consumed in both the air heating mode and the water heating mode, and cooling water or intake air is heated in a combustion mode. This approach not only wastes fuel, is relatively inefficient, but also increases the hysteresis of the approach of increasing air or system temperature using heat transfer, and is not capable of rapid start-up in an emergency.

Based on the above, the cold starting device based on the vortex tube is provided, the vortex tube 3 generates vortex by utilizing high-speed airflow, separates hot airflow and cold airflow, and inputs the hot airflow into the air inlet pipe 5 of the cylinder 6 of the engine, so that a better air environment is provided for fuel combustion during cold starting of the engine, and the cold starting efficiency of the engine is improved.

The cold start device based on the vortex tube is described in detail below with reference to the accompanying drawings.

Referring to fig. 1, the vortex tube-based cold start device mainly comprises a compressed air tank 2, a vortex tube 3 and a pipeline assembly, wherein the compressed air tank 2 is connected into the vortex tube 3 through a pipeline to provide high-pressure air flow for the vortex tube 3, the vortex tube 3 generates vortex flow by using high-speed air flow to separate cold air flow and hot air flow, the cold air flow is used for refrigeration, and the hot air flow is used for air intake heating.

The vortex tube 3 obtains high-pressure gas in the compressed gas tank 2 and forms hot gas flow and cold gas flow, one end of the vortex tube 3 outputting the hot gas flow is a hot end, one end of the vortex tube 3 outputting the cold gas flow is a cold end, the temperature of the hot end inputting the hot gas flow is higher than the air temperature of the environment where the engine is located, the hot end is connected with the air inlet pipe 5 of the engine, the hot gas flow separated by the vortex tube 3 is input into the air inlet pipe 5, and the hot gas flow is input into the air cylinder 6 of the engine through the air inlet pipe 5.

In order to facilitate the communication between the hot end of the vortex tube 3 and the air inlet pipe 5 of the engine, the hot end of the vortex tube 3 is provided with a hot air pipe which is communicated with the air inlet pipe 5, and the axis of the hot air pipe and the axis of the air inlet pipe 5 at the communicated position form an included angle. In order to promote the transportation of the hot air to the cylinder 6 of the engine, the direction of the hot air flow input into the air inlet pipe 5 is the same as or forms an acute angle with the air flow direction in the air inlet pipe 5, the hot air flow has a component speed along the air flow transportation direction in the air inlet pipe 5, and the hot air flow output by the vortex tube 3 promotes the air flow in the air inlet pipe 5, so that the air inlet efficiency of the cylinder 6 of the engine is improved, and the combustion efficiency of fuel in the cylinder 6 of the engine is improved.

For the structure of the vortex tube 3, the vortex tube 3 comprises a body and a nozzle connected with the body, wherein a hot end and a cold end are respectively arranged at two opposite ends of the body, a vortex chamber is arranged in the body and is respectively communicated with the cold end and the hot end, and the nozzle is perpendicular to the body and is respectively communicated with the compressed gas tank 2 and the vortex chamber; the hot end is connected with a hot air pipe, and the cold end is connected with a cold air pipe.

Compressed gas flows into the nozzle at a high speed, and a rotating separation vortex is generated through the vortex chamber, and because the centrifugal force of hot molecules moving at a high speed is large, the centrifugal force of low-temperature molecules moving at a low speed is small, the temperature of air flows in the inner layer and the outer layer of the vortex chamber is high, the temperature of the central air flow is low, the central air flow of the vortex forms a cold air flow, and the outer air flow of the vortex forms a hot air flow.

The hot end is provided with a regulating valve which can regulate the flow ratio and the temperature ratio of the hot air flow and the cold air flow; the high-temperature gas is discharged through the control of the regulating valve, the low-temperature gas is blocked by the regulating valve, reversely flows into the cold end, and is output through the cold air pipe. Wherein the temperature of the cold end outlet can reach-10 to-50 ℃, and the temperature of the hot end outlet can reach 100 to 130 ℃.

It is understood that the cold end can be connected into the engine or the cold component of the corresponding vehicle through the cold air pipe to cool the cold component.

For the piping assembly, comprising a pipe and elements arranged on the pipe, the pipe of the nozzle connecting the compressed gas tank 2 is provided with a flow valve and a flow meter.

As shown in fig. 1, the compressed air tank 2 is connected with an air compressor 1 through a pipeline, and the air compressor 1 is used for compressing air and inputting the air into the compressed air tank 2; the compressed air tank 2 is internally provided with an air pressure sensor, the air pressure sensor and the air compressor 1 are respectively connected with a controller, the air pressure sensor is used for measuring air pressure data in the compressed air tank 2 and sending the air pressure data to the controller, and the controller is used for controlling the running state of the air compressor 1.

The air pressure sensor is arranged in the compressed air tank 2, the air pressure of the compressed air stored in the compressed air tank 2 is measured, the controller controls the operation of the air compressor 1 according to the measured air pressure, feedback control is realized, the compressed air in the compressed air tank 2 is timely supplemented, the compressed air in the compressed air tank 2 can be kept in a required state, the required pressure air flow is ensured to be provided for the vortex tube 3, and the running stability and efficiency of the whole device are improved.

In addition, the region of the air inlet pipe 5 for acquiring hot-end input hot air flow forms a mixing chamber, the hot air flow and the air flow passing through the throttle valve 4 are mixed in the mixing chamber and are jointly input into the cylinder 6 of the engine, the throttle valve 4 is positioned at the upstream of the mixing chamber, and the throttle valve 4 is used for changing the mixing proportion of the air flow passing through the throttle valve 4 and the hot-end input hot air flow by adjusting the opening degree.

In operation, the engine moves the air compressor 1, storing compressed air in the compressed air tank 2. When cold start is needed, air in the compressed air tank 2 flows into the vortex tube 3 at high speed, hot end air is flushed into the air inlet pipe 5 after cold end separation, and then enters the air cylinder 6 of the engine, so that a better air environment is provided for cold start combustion of the engine.

The cold starting device based on the vortex tube is utilized without additional power supply and fuel heating, so that the device is low in cost, higher in safety and reliability, the temperature of a hot end outlet can reach more than 100 ℃, the heating effect is obvious, meanwhile, the compressed air flow is large, the device can be used by opening a switch, response basically has no delay, and the whole device is small in size, light in weight and collision-proof.

Example 2

In another embodiment of the present utility model, a vehicle is provided.

The vehicle in this embodiment utilizes a vortex tube based cold start device as in embodiment 1.

The cold starting device based on the vortex tube is connected to an engine of a vehicle, the gas compressor acquires power from the engine, gas is compressed and then is conveyed to the compressed gas tank 2 for storage, the vortex tube 3 acquires high-pressure gas flow in the compressed gas tank 2 and outputs hot gas flow, the hot gas flow enters the cylinder 6 along with the air inlet of the engine, a good air environment is provided for cold starting combustion of the engine, and cold starting characteristics are improved. Since the vehicle is provided with the cold start device based on the vortex tube as in embodiment 1, the advantage of the cold start device based on the vortex tube is seen in embodiment 1, and will not be described here.

For other structures in the vehicle that are not mentioned, existing structures may be employed.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The cold starting device based on the vortex tube is characterized by comprising a compressed air tank and a vortex tube communicated with the compressed air tank, wherein the vortex tube acquires high-pressure air in the compressed air tank and forms hot air flow and cold air flow, the vortex tube comprises a cold end for outputting the cold air flow and a hot end for outputting the hot air flow, and the hot end is connected with an air inlet pipe of an engine.

2. A cold start device based on vortex tube as set forth in claim 1, characterized in that the hot end of the vortex tube is provided with a hot air pipe, the hot air pipe is communicated with an air inlet pipe, and the direction of hot air flow in the hot air pipe is the same as or forms an acute angle with the direction of air flow in the air inlet pipe.

3. The vortex tube-based cold start device as set forth in claim 1, wherein the vortex tube comprises a body and a nozzle connected to the body, the hot end and the cold end are respectively disposed at opposite ends of the body, a vortex chamber is disposed in the body, the vortex chamber is respectively communicated with the cold end and the hot end, the nozzle is disposed perpendicular to the body and is respectively communicated with the compressed gas tank and the vortex chamber, the vortex chamber obtains gas output by the compressed gas tank through the nozzle and forms a vortex, a central gas flow of the vortex forms a cold gas flow, and an outer gas flow of the vortex forms a hot gas flow.

4. A cold start-up device based on vortex tube as claimed in claim 3, characterized in that the nozzle is provided with a flow valve and a flow meter on the line connecting the compressed gas tank.

5. A cold start-up device based on a vortex tube as claimed in claim 3, characterized in that the hot end is provided with a regulating valve which is able to regulate the flow ratio and the temperature ratio of the hot and cold streams.

6. The vortex tube based cold start apparatus of claim 1 wherein the compressed air tank is connected by a conduit to an air compressor for compressing and delivering air to the compressed air tank.

7. The vortex tube-based cold start device of claim 6, wherein an air pressure sensor is arranged in the compressed air tank, the air pressure sensor and the air compressor are respectively connected to the controller, the air pressure sensor is used for measuring air pressure data in the compressed air tank and sending the air pressure data to the controller, and the controller is used for controlling the running state of the air compressor.

8. A cold start-up device based on vortex tube as claimed in claim 1, characterized in that the region of the intake pipe from which hot end the hot flow is taken in forms a mixing chamber in which the hot flow is mixed with the flow passing through the throttle valve and is jointly fed into the cylinders of the engine.

9. A vortex tube based cold start device as set forth in claim 8 in which the throttle valve is located upstream of the mixing chamber, the throttle valve being adapted to vary the mixing ratio of the air flow through the throttle valve to the hot end input hot air flow by adjusting the opening.

10. A vehicle characterized by the use of a vortex tube based cold start device as claimed in any one of claims 1-9.