Dryer structure of pure electric bus

Abstract

The utility model discloses a pure electric bus dryer structure which comprises a drying cylinder assembly and a dryer body, the drying cylinder assembly is installed on the upper portion of the dryer body, a drying agent is arranged on the upper portion in the drying cylinder assembly, and the upper portion of the drying agent and the drying cylinder assembly form a drying cylinder upper space. An annular channel is formed between the outer wall of the drying agent and the inner wall of the drying cylinder assembly, a filter is arranged on the lower portion of the drying agent, an air inlet is formed in the side edge of the dryer body, and the lower portion of the air inlet is communicated with an exhaust valve. A backflow electromagnetic valve, an air inlet electromagnetic valve and a pressure reading device are further arranged on the lower portion of the output port, the backflow electromagnetic valve is communicated with the backflow channel, the air inlet electromagnetic valve is connected with an exhaust electromagnetic valve, the exhaust electromagnetic valve is connected with an exhaust valve and an emptying port, an ECU master control device is further arranged on the side edge of the dryer body, and the dryer is good in drying effect and high in stability.

Description

Technical Field

[0001] The utility model belongs to the technical field of bus dryers, and in particular relates to a dryer structure for a pure electric bus. Background Art

[0002] Air pollution has become one of the major issues of concern to the Chinese public. Air pollution indices in major cities have frequently exceeded normal limits. PM2.5 is one of the important indices for measuring air pollution. Studies have shown that exhaust from traditional fuel vehicles contributes 10% to 40% of PM2.5 to air pollution in major cities. Pure electric vehicles, due to their zero emissions and the absence of any exhaust emissions, are supported by governments at all levels and are becoming the future development direction of the automotive industry.

[0003] Due to their high mass, pure electric buses require high braking force, so most pure electric light trucks currently use pneumatic brakes. As a key component in the pneumatic brake system, the air dryer filters oil and water from the compressed air and integrates an unloading valve to regulate the pressure of the compressed air within the air reservoir. Traditional air dryers primarily consist of a valve housing, a drying cylinder, a pressure regulating valve, and a heating tube. Pressure regulation is achieved through a mechanical pressure regulating valve. However, in applications such as electric buses and construction vehicles, where auxiliary or normal air usage is high, the drying function can suffer from premature failure and other issues. Utility Model Content

[0004] The purpose of the present utility model is to provide a dryer structure for a pure electric bus to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pure electric bus dryer structure, comprising a drying cylinder assembly and a dryer body, the drying cylinder assembly being installed on the upper part of the dryer body, a desiccant being provided in the upper inner part of the drying cylinder assembly, the upper part of the desiccant and the drying cylinder assembly forming the upper space of the drying cylinder, an annular channel being formed between the outer wall of the desiccant and the inner wall of the drying cylinder assembly, a filter being provided at the lower part of the desiccant, an air inlet being provided on the side of the dryer body, an exhaust valve being connected below the air inlet, a central channel being provided in the middle of the dryer body, the central channel being connected to the output port through a one-way valve, a reflux solenoid valve, an air intake solenoid valve and a pressure reading device being further provided at the lower part of the output port, the reflux solenoid valve being connected to the reflux channel, the air intake solenoid valve being connected to the exhaust solenoid valve, the exhaust solenoid valve being connected to the exhaust valve and the emptying port, and an ECU general control device being also provided on the side of the dryer body.

[0006] Preferably, the pressure reading device 12 is connected to the ECU general control device, which includes a circuit board, a single-chip microcomputer, a heat dissipation system, an alarm system, a power plug, and a heating device is provided on the exhaust port side.

[0007] Preferably, the power supply of the heating device is connected to the ECU overall control device.

[0008] Preferably, the heating device and the ECU overall control device are located inside the housing.

[0009] Preferably, the alarm system is provided with an LED indicator light, which is mounted on the cover.

[0010] Preferably, the air inlet of the dryer is connected to the electrically controlled condenser, and the air outlet is connected to the four-circuit protection valve.

[0011] Technical effects and advantages of this utility model:

[0012] 1. The control method combining electronic and mechanical is adopted to improve the air drying efficiency and enhance the stability and reliability of the system.

[0013] 2. Intelligent adjustment is achieved through the ECU master control device, which improves the adjustment accuracy and response speed.

[0014] 3. The integrated design makes the structure more compact and easy to install and maintain.

[0015] 4. The alarm system can send out warning signals in time to ensure the safe use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the dryer of the utility model;

[0017] Figure 2 This is a schematic diagram of the installation of the dryer of the utility model.

[0018] In the figure: 1 upper space of the drying cylinder, 2 drying cylinder assembly, 3 desiccant, 4 annular channel, 5 filter, 6 air inlet, 7 central channel, 8 dryer body, 9 exhaust valve, 10 one-way valve, 11 output port, 12 pressure reading device, 13 reflux channel, 14 reflux solenoid valve, 15 alarm system, 16 power plug, 17 air intake solenoid valve, 18 LED indicator light, 19 ECU main control device, 20 exhaust solenoid valve, 21 heating device, 22 cover, 23 exhaust port, 24 electronically controlled condenser, 25 four-circuit protection valve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The utility model provides Figure 1-2 The structure of a pure electric bus dryer shown in the figure includes a drying cylinder assembly 2 and a dryer body 8. The drying cylinder assembly 2 is installed on the upper part of the dryer body 8. A desiccant 3 is provided in the upper part of the drying cylinder assembly 2. The upper part of the desiccant 3 and the drying cylinder assembly 2 form an upper drying cylinder space 1. An annular channel 4 is formed between the outer wall of the desiccant 3 and the inner wall of the drying cylinder assembly 2. A filter 5 is provided at the lower part of the desiccant 3. An air inlet 6 is provided on the side of the dryer body 8. The air inlet 6 is connected to the exhaust valve 9 below. A central channel 7 is provided in the middle of the dryer body 8. The central channel 7 is connected to the output port 11 through a one-way valve 10. A reflux solenoid valve 14, an intake solenoid valve 17 and a pressure reading device 12 are also provided at the lower part of the output port 11. The reflux solenoid valve 14 is connected to the reflux channel 13. The intake solenoid valve 17 is connected to the exhaust solenoid valve 20. The exhaust solenoid valve 20 is connected to the exhaust valve 9 and the emptying port 23. An ECU main control device 19 is also provided on the side of the dryer body 8.

[0021] Specifically, the pressure reading device 12 is connected to the ECU general control device 19, which includes a circuit board, a single-chip microcomputer, a heat dissipation system, an alarm system 15, and a power plug 16. A heating device 21 is provided on the side of the exhaust port 23.

[0022] Specifically, the power supply of the heating device 21 is connected to the ECU overall control device 19 .

[0023] Specifically, the heating device 21 and the ECU overall control device 19 are located in the cover 22 .

[0024] Specifically, the alarm system 15 is provided with an LED indicator light 18 , which is mounted on the cover 22 .

[0025] Specifically, the dryer air inlet 6 is connected to the electronically controlled condenser 24 , and the dryer air outlet 11 is connected to the four-circuit protection valve 25 .

[0026] Working principle:

[0027] During use, the vehicle equipped with the electronically controlled air dryer starts running, and the engine drives the air compressor to inflate the vehicle's air tank. The air compressed by the air compressor enters the dryer body 8 through the air inlet 6, and the condensed water in the compressed air falls onto the exhaust valve 9 at the bottom of the dryer body 8. The compressed air ascends to the drying cylinder 2, and is filtered out of the oil mist and fine impurities through the filter 5. The compressed air passes through the annular channel 4 and enters the upper space 1 of the drying cylinder, and then passes through the desiccant 3 to absorb the moisture contained therein. The dry compressed air pushes open the one-way valve 10 and is output from the output port 11. The pressure reading device 12 installed behind the one-way valve 10 on the dryer body 8 detects the air pressure at the output port 11, converts the detected output air pressure into voltage and feeds it back to the ECU main controller 19. The ECU controller 19 controls the on and off of the reflux solenoid valve 14, the intake solenoid valve 17, and the exhaust solenoid valve 20 of the electronic control system through logic program calculation. When the detected pressure is greater than the preset cut-off pressure, the dry compressed air from the output port 11 pushes the exhaust valve 9, and at the same time, enters the central channel 7, the desiccant 3, and the annular channel 4 through the reflux channel 13 to recoil regenerate the desiccant 3. When the air pressure at the output port 11 is lower than the preset value, the ECU main controller 19 controls the exhaust solenoid valve 20 to discharge the compressed air to the atmosphere through the exhaust port 23, completing the unloading, reflux recoil regeneration, and re-air supply functions of the electronically controlled compressed air dryer. The entire electronic control unit, including the ECU 19 and the heating device 21, is sealed within a housing 22, ensuring protection from external environmental interference and enhanced waterproofing. Furthermore, the system's power supply is integrated and connected to the power plug 16 on the housing 22, resulting in a more compact and convenient design. The LED indicator 18 for the alarm system 15 is also located on the housing 22 to indicate any malfunctions and ensure safe operation.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A dryer structure for a pure electric bus, comprising a drying cylinder assembly (2) and a dryer body (8), characterized in that: The drying cylinder assembly (2) is installed on the upper part of the dryer body (8). A desiccant (3) is provided in the upper part of the drying cylinder assembly (2). The upper part of the desiccant (3) and the drying cylinder assembly (2) form an upper drying cylinder space (1). An annular channel (4) is formed between the outer wall of the desiccant (3) and the inner wall of the drying cylinder assembly (2). A filter (5) is provided at the lower part of the desiccant (3). An air inlet (6) is provided on the side of the dryer body (8). The lower part of the air inlet (6) is connected to an exhaust valve (9). A central air filter (5) is provided in the middle of the dryer body (8). The central channel (7) is connected to the output port (11) through a one-way valve (10). A return solenoid valve (14), an intake solenoid valve (17) and a pressure reading device (12) are provided at the lower portion of the output port (11). The return solenoid valve (14) is connected to the return channel (13). The intake solenoid valve (17) is connected to the exhaust solenoid valve (20). The exhaust solenoid valve (20) is connected to the exhaust valve (9) and the emptying port (23). An ECU general control device (19) is also provided on the side of the dryer body (8).

2. The dryer structure for a pure electric bus according to claim 1, characterized in that: The pressure reading device (12) is connected to the ECU general control device (19). The ECU general control device (19) includes a circuit board, a single chip microcomputer, a heat dissipation system, an alarm system (15), and a power plug (16). A heating device (21) is provided on the side of the exhaust port (23).

3. The dryer structure for a pure electric bus according to claim 2, characterized in that: The power supply of the heating device (21) is connected to the ECU main control device (19).

4. The dryer structure for a pure electric bus according to claim 3, characterized in that: The heating device (21) and the ECU overall control device (19) are located in the housing (22).

5. The dryer structure for a pure electric bus according to claim 2, characterized in that: The alarm system (15) is provided with an LED indicator light (18), and the LED indicator light (18) is mounted on the cover (22).

6. The dryer structure for a pure electric bus according to claim 1, characterized in that: The dryer air inlet (6) is connected to the electric-controlled condenser (24), and the dryer air outlet (11) is connected to the four-circuit protection valve (25).

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