Electric air compression conveying device

Abstract

The utility model provides an electric air compressing and conveying device which comprises a roots rotor device, a first cavity is defined in a roots rotor shell of the roots rotor device, an air inlet and an air outlet are both communicated with the first cavity, and a roots rotor assembly is located in the first cavity; a second cavity is defined in a gearbox shell of the gearbox, the gear transmission device is located in the second cavity, and the gear transmission device is connected with the roots rotor assembly; the motor device comprises a motor shell and a motor, a third cavity is defined in the motor shell, and the motor is located in the third cavity; the motor is connected with the gear transmission device; and the controller device comprises a controller shell and a circuit connecting plate, a fourth cavity is defined in the controller shell, the circuit connecting plate is located in the fourth cavity, the circuit connecting plate is electrically connected with the motor, and the circuit connecting plate drives the motor to rotate. Compared with the prior art, the temperature of the tail gas pipe can be increased, so that the tail gas temperature is within an ideal temperature range for a long time.

Description

Technical field

[0001] The utility model relates to the technical field of vehicle tail gas emission, in particular to an electric air compression conveying device. [Background Technology]

[0002] Currently, due to the upcoming National VII emission regulations, there are further stringent emission requirements for commercial vehicles, especially under cold engine conditions. However, the exhaust gas treatment technology currently in use cannot meet the requirements of the new emission regulations. Based on this, the selection and application of new technologies are even more critical. Some new technologies require electric heating to achieve the temperature rise of the exhaust pipe during the cold start phase. This technical condition requires a huge amount of power consumption in a short period of time to heat the heating plate installed in the exhaust pipe to increase the temperature of the exhaust pipe. This technology causes a huge consumption of the car battery. Under low temperature power supply conditions, there is a problem that the exhaust pipe cannot be heated, and even the starter cannot start. Therefore, under this technical background, a more efficient and energy-saving device is needed to achieve this function. [Utility Model Content]

[0003] One of the purposes of the present utility model is to provide an electric air compression delivery device, which can increase the exhaust pipe temperature when the car is in a cold start and certain special operating conditions, so that the exhaust temperature is in an ideal temperature range for a long time, thereby improving the exhaust emission level and meeting the requirements of laws and regulations.

[0004] According to one aspect of the present invention, the present invention provides an electric air compression delivery device, which includes: a Roots rotor device, which includes an air inlet, an air outlet, a Roots rotor housing and a Roots rotor assembly, wherein a first chamber is defined in the Roots rotor housing, the air inlet and the air outlet are both connected to the first chamber, and the Roots rotor assembly is located in the first chamber; a gear box, which includes a gear box housing and a gear transmission device, wherein a second chamber is defined in the gear box housing, the gear transmission device is located in the second chamber, and the gear transmission device is connected to the Roots rotor assembly; a motor device, which includes a motor housing and a motor , a third chamber is defined in the motor housing, and the motor is located in the third chamber; the motor is connected to the gear transmission device; a controller device, which includes a controller housing and a circuit connection board, a fourth chamber is defined in the controller housing, the circuit connection board is located in the fourth chamber, the circuit connection board is electrically connected to the motor, and the circuit connection board drives the motor to rotate; wherein, the motor drives the Roots rotor assembly to rotate through the gear transmission device, so that the Roots rotor device compresses the air sucked into the air inlet, and provides the compressed air to the vehicle's fuel engine through the air outlet.

[0005] Compared with the existing technology, the utility model intelligently monitors the temperature of the exhaust pipe so that when the car is in a cold start or certain special working conditions, fresh air with a certain compression ratio can be introduced into the fuel engine, thereby increasing the temperature of the exhaust pipe and keeping the exhaust temperature in an ideal temperature range for a long time, thereby improving the exhaust emission level and meeting the requirements of laws and regulations.

Brief Description of the Drawings

[0006] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0007] Figure 1 A perspective view of an electric air compression delivery device in one embodiment of the present invention;

[0008] Figure 2 In one embodiment of the present invention, Figure 1 A longitudinal sectional view of the electric compressed air delivery device shown;

[0009] Figure 3 In one embodiment of the present invention, Figure 1 A top view of the electric compressed air delivery device shown;

[0010] Figure 4 In one embodiment of the present invention, Figure 1 A schematic transverse cross-sectional view of a Roots rotor device is shown;

[0011] Figure 5 In one embodiment of the present invention, Figure 2 A partial enlarged view of the gear transmission shown;

[0012] Figure 6 In one embodiment of the present invention, Figure 1 A partial enlarged view of the gear transmission shown;

[0013] Figure 7 In one embodiment of the present invention, Figure 1 A top view of the first Roots rotor is shown;

[0014] Figure 8 In one embodiment of the present invention, Figure 1 A three-dimensional schematic diagram of the first Roots rotor and the first rotating shaft that are sleeved together is shown;

[0015] Figure 9In one embodiment of the present invention, Figure 1 A longitudinal section of the Roots rotor housing is shown;

[0016] Figure 10 In one embodiment of the present invention, Figure 1 An exploded view of the controller assembly is shown;

[0017] Figure 11 In one embodiment of the present invention, Figure 4 The process diagram of the Roots rotor device in one rotation cycle is shown. [Specific implementation method]

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0019] The term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments. Unless otherwise specified, the terms "coupled," "connected," "connected," and "connected" used herein to indicate electrical connection refer to direct or indirect connection. For example, "A and B are connected" includes both direct electrical connection between A and B and connection between A and B through electrical components or circuits.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "front", "back", "left", "right", "vertical", "perpendicular", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] Please refer to Figure 1 As shown, it is a three-dimensional diagram of an electric air compression delivery device in one embodiment of the present invention; please refer to Figure 2 As shown, the present invention is as follows in one embodiment Figure 1 The longitudinal section of the electric compressed air delivery device shown in FIG. Figure 3 As shown, the present invention is as follows in one embodiment Figure 1 A top view of the electric compressed air delivery device is shown.

[0022] Figure 1-Figure 3The illustrated electric compressed air delivery device includes a Roots rotor assembly 1, a gearbox 2, a motor assembly 3, and a controller assembly 4. The Roots rotor assembly 1 includes an air inlet 11, an air outlet 12, a Roots rotor housing 13, and a Roots rotor assembly 14. The Roots rotor housing 13 defines a first chamber 15, with both the air inlet 11 and the air outlet 12 communicating with the first chamber 15. The Roots rotor assembly 14 is located within the first chamber 15. The gearbox 2 includes a gearbox housing 21 and a gear transmission 22. The gearbox housing 21 defines a second chamber 23, with the gear transmission 22 located within the second chamber 23 and connected to the Roots rotor assembly 14. The motor assembly 3 includes a motor housing 31 and a motor 32. The motor housing 31 defines a third chamber 33, with the motor 32 located within the third chamber 33. The motor 32 is connected to the gear transmission 22 in the gearbox 2. The controller device 4 includes a controller housing 41 and a circuit board 42. A fourth chamber 43 is defined within the controller housing 41. The circuit board 42 is located within the fourth chamber 43 and is electrically connected to the motor 32. The circuit board 42 drives the motor 32 to rotate based on the monitored temperature of the vehicle's exhaust pipe. The motor 32 drives the Roots rotor assembly 14 via the gear transmission 22, causing the Roots rotor assembly 1 to compress air drawn into the air inlet 11 to a certain compression ratio. The compressed air is then supplied to the vehicle's fuel engine through the air outlet 12.

[0023] Please refer to Figure 4 As shown, the present invention is as follows in one embodiment Figure 1 The transverse cross-sectional diagram of the Roots rotor device is shown in FIG. Figure 2 and Figure 4 As shown, the Roots rotor assembly 14 includes a first Roots rotor 141, a second Roots rotor 142, a first rotating shaft 143 and a second rotating shaft 144, wherein the first Roots rotor 141, the second Roots rotor 142, the first rotating shaft 143 and the second rotating shaft 144 are located in the first chamber 15; the first Roots rotor 141 is sleeved on the first rotating shaft 143, and the first Roots rotor 141 rotates synchronously with the first rotating shaft 143, for example, the first Roots rotor 141 and the first rotating shaft 144 3 are connected by interference fit; the second Roots rotor 142 is sleeved on the second rotating shaft 144, and the second Roots rotor 142 rotates synchronously with the second rotating shaft 144. For example, the second Roots rotor 142 and the second rotating shaft 144 are connected by interference fit; the first rotating shaft 143 and the second rotating shaft 144 are parallel to each other, and the first Roots rotor 141 and the second Roots rotor 142 are engaged with each other; the first rotating shaft 143 and the second rotating shaft 144 are both connected to the gear transmission device 22 in the gear box 2.

[0024] like Figure 2As shown, the motor 32 includes a motor stator 321, a motor rotor 322, and a motor shaft 323. The motor stator 321, motor rotor 322, and motor shaft 323 are located in the third chamber 33. The motor stator 321 is disposed around the motor rotor 322 and is fixed to the motor housing 31. The motor rotor 322 is sleeved on the motor shaft 323 and rotates synchronously with the motor rotor 322. The motor shaft 323 is connected to the gear transmission device 22 in the gearbox 2. The circuit connection board 42 is electrically connected to the motor stator 321. The circuit connection board 42 inputs a current signal to the motor stator 321 based on the monitored vehicle exhaust pipe temperature, thereby driving the motor rotor 322 to rotate about a central axis.

[0025] exist Figure 2 In the specific embodiment shown, the motor stator 321 is fixedly connected to the motor housing 31 by screws through the provided mounting holes 324; the motor housing 31 is provided with mounting holes 311 and heat dissipation ribs 312 for effective heat dissipation during product installation and operation of the motor 32.

[0026] The motor shaft 323 rotates synchronously with the motor rotor 322. The motor shaft 323 drives the first shaft 143 and the second shaft 144 to rotate in opposite directions at a constant speed via the gear transmission device 22 in the gear box 2, thereby driving the first Roots rotor 141 and the second Roots rotor 142 to rotate in opposite directions at a constant speed, thereby causing the Roots rotor device 1 to compress the air sucked in by the air inlet 11.

[0027] exist Figure 1 and Figure 2 In the illustrated embodiment, the Roots rotor assembly 1, gearbox 2, motor assembly 3, and controller assembly 4 are sequentially arranged from top to bottom along the axial direction of the motor shaft 323, and are fixedly connected in sequence. Alternatively, the Roots rotor assembly 1, gearbox 2, motor assembly 3, and controller assembly 4 are coaxially integrated.

[0028] Please refer to Figure 5 As shown, the present invention is as follows in one embodiment Figure 2 The partial enlarged view of the gear transmission device shown in FIG. Figure 5As shown, the gear transmission device 22 includes a group of synchronous gears (unmarked) and a group of acceleration gears (unmarked). The group of synchronous gears (unmarked) includes a first synchronous gear 221 and a second synchronous gear 222, which are meshed with each other; the first synchronous gear 221 is sleeved on the first rotating shaft 143, and the first rotating shaft 143 rotates synchronously with the first synchronous gear 221; the second synchronous gear 222 is sleeved on the second rotating shaft 144, and the second rotating shaft 144 rotates synchronously with the second synchronous gear 222; the group of acceleration gears (unmarked) includes a first speed-increasing gear 223 and a second speed-increasing gear 224, and the first speed-increasing gear 223 and the second speed-increasing gear 224 are meshed with each other. Engagement; the first speed-increasing gear 223 is sleeved on the motor shaft 323, and the first speed-increasing gear 223 rotates synchronously with the motor shaft 323; the second speed-increasing gear 224 is sleeved on the second shaft 144, and the second shaft 144 rotates synchronously with the second speed-increasing gear 224, wherein the speed-increasing ratio of the first speed-increasing gear 223 to the second speed-increasing gear 224 is less than 1, that is, the first speed-increasing gear 223 can be called a large speed-increasing gear, and the second speed-increasing gear 224 can be called a small speed-increasing gear. For example, the speed-increasing ratio is 1:2, which can realize the function of reducing the speed of the motor 32 and increasing the speed of the Roots rotors 141 and 142.

[0029] Please refer to Figure 6 As shown, the present invention is as follows in one embodiment Figure 1 The enlarged partial view of the gear transmission device is shown in FIG. Figure 2 and Figure 5 As shown, the second chamber 23 defined in the gearbox housing 21 can be used as a storage space for lubricating oil. Figure 6 As shown, the gearbox housing 21 is further provided with a mounting hole 26, which is in communication with the second chamber 23. The mounting hole 26 is sealed by a screw plug 24 via a sealing ring 25. This allows replacement of the lubricating oil inside the gears, ensuring easy maintenance after the oil has reached its service life.

[0030] Please refer to Figure 7 As shown, the present invention is as follows in one embodiment Figure 1 The top view of the first Roots rotor is shown; please refer to Figure 8 As shown, the present invention is as follows in one embodiment Figure 1 The three-dimensional schematic diagram of the first Roots rotor and the first rotating shaft which are sleeved together is shown in FIG. Figure 7 and Figure 8As shown, the first Roots rotor 141 includes a rotor body 1411 and three endpieces 1412 arranged on the rotor body 1411 and evenly spaced along the circumference. The endpieces 1412 are axisymmetric, with the symmetrical half of the endpiece 1412 comprising a first involute a at the top, a third involute c at the bottom, and a second involute b connecting the first and third involutes c. The connection between the second involute b and the first involute a is referred to as the first endpoint b1, and the connection between the second involute b and the third involute c is referred to as the second endpoint b2. The structures of the first and second Roots rotors 141 and 142 are identical and will not be further described here.

[0031] Please refer to Figure 4 As shown, during rotation, a predetermined clearance (typically set at 0.05 mm) is always maintained between the first involute a of the first and second Roots rotors 141, 142 and the inner wall 131 of the Roots rotor housing 13. The meshing clearance between the first and second Roots rotors 141, 142 is determined by matching the second endpoint b2 with the second involute b, and the meshing clearance between the first and second Roots rotors 141, 142 is always maintained at a predetermined value (typically set at 0.05 mm). These two clearances should generally be set appropriately to account for air leakage caused by pressure during air compression and thermal expansion of the metal caused by air compression.

[0032] Please continue to refer to Figure 8 As shown, the portion of the first rotating shaft 143 extending from the upper end of the first Roots rotor 141 is called the upper bearing connection portion 1431; the portion of the first rotating shaft 143 extending from the lower end of the first Roots rotor 141 and entering the gearbox 2 is called the gear connection portion 1432; and the portion of the first rotating shaft 143 extending from the lower end of the first Roots rotor 141 and located within the Roots rotor housing 13 is called the lower bearing connection portion 1433. Similarly, the portion of the second rotating shaft 144 extending from the upper end of the second Roots rotor 142 is called the upper bearing connection portion; the portion of the second rotating shaft 144 extending from the lower end of the second Roots rotor 142 and entering the gearbox 2 is called the gear connection portion (this portion may have a knurled surface according to connection requirements); and the portion of the second rotating shaft 144 extending from the lower end of the second Roots rotor 142 and located within the Roots rotor housing 13 is called the lower bearing connection portion.

[0033] The upper and lower bearing connecting portions 1431 and 1433 of the first rotating shaft 143 are mounted on corresponding bearing mounting bases 18 via corresponding bearings 16 and oil seals 17 (e.g., lip oil seals). The upper and lower bearing connecting portions of the second rotating shaft 144 are mounted on corresponding bearing mounting bases 18 via corresponding bearings 16 and oil seals 17, respectively. The bearing mounting base 18 is mounted on the Roots rotor housing 13. The first synchronous gear 221 is mounted on the gear connecting portion 1432 of the first rotating shaft 143. The second synchronous gear 222 and the second speed-increasing gear 224 are mounted on the gear connecting portion of the second rotating shaft 144.

[0034] exist Figure 1 、 Figure 2 and Figure 3 In the embodiment shown, the Roots rotor device 1 and the gearbox 2 are fixedly connected by mounting screws 136; to ensure the sealing of the product, the Roots rotor device 1 and the gearbox 2 are sealed by a special-shaped sealing ring 19 to achieve the sealing characteristics of the product. The Roots rotor housing 13 and the gearbox housing 21 are installed and positioned by the cooperation of positioning pins and positioning holes to ensure the coaxiality of the bearing mounting base 18 located at both ends of the first rotating shaft 143 along the axial direction of the first rotating shaft 143 during the assembly process, and the coaxiality of the bearing mounting base 18 located at both ends of the second rotating shaft 144 along the axial direction of the second rotating shaft 144, so as to reduce the excessive rotational resistance caused by poor coaxiality of the first Roots rotor 141 and the second Roots rotor 142 during the rotation process. Figure 1 、 Figure 2 and Figure 3 In the illustrated embodiment, the Roots rotor housing 13 is provided with six groups of screw mounting holes 131 and two groups of positioning holes 132 , wherein the screws 136 are used in conjunction with the screw mounting holes 131 ; and the positioning holes 132 are used in conjunction with positioning pins.

[0035] Please refer to Figure 9 As shown, the present invention is as follows in one embodiment Figure 1 The longitudinal section of the Roots rotor housing is shown in FIG. Figure 9 As shown, the connecting area of ​​the Roots rotor housing 13 connecting the first chamber 15 and the air inlet 11 is a first inclined surface 133, which gradually increases the transition space from the air inlet 11 to the first chamber 15. The connecting area of ​​the Roots rotor housing 13 connecting the first chamber 15 and the air outlet 12 is a second inclined surface 134, which gradually increases the transition space from the air outlet 12 to the first chamber 15. This inclined surface structure primarily ensures that the first chamber 15 slowly increases and decreases during air delivery, thereby ensuring a smooth transition of delivered air and preventing air interception and abnormal noise caused by air interception.

[0036] exist Figure 1 、 Figure 2 and Figure 3 In the illustrated embodiment, a mounting chamber 135 is defined at the top of the Roots rotor housing 13. The mounting chamber 135 is located above the first chamber 15. A bearing mounting base 18 corresponding to the upper bearing connection portion 1431 of the first rotating shaft 143 is disposed in the mounting chamber 135. A bearing mounting base 18 corresponding to the upper bearing connection portion of the second rotating shaft 144 is disposed in the mounting chamber 135.

[0037] exist Figure 2 In the illustrated embodiment, the portion of the motor shaft 323 extending from the upper end of the motor rotor 322 seals the lubricating oil in the second chamber 23 formed by the gear box 2 through the corresponding bearing 36 and the matching oil seal component 34; the portion of the motor shaft 323 extending from the lower end of the motor rotor 322 is mounted on the controller housing 41 through the corresponding bearing 36; the portion of the motor shaft 323 extending from the upper end of the motor rotor 322 and entering the gear box 2 is sleeved with a first speed-increasing gear 223.

[0038] Please refer to Figure 10 As shown, the present invention is as follows in one embodiment Figure 1 An exploded view of the controller assembly is shown. Figure 10 The controller device shown includes, in addition to a controller housing 41 and a circuit board 42, terminals 43, an insulating cap 44, and a mounting collar 45. The controller housing 41 includes an end cap 411 and a housing 412 with an opening at the bottom. The end cap 411 snaps into the opening of the housing 412. The top of the housing 412 is adjacent to the motor device 3, and the housing 412 houses the circuit board 42 and the mounting collar 45. Terminals 43 are fixed to the top of the housing 412 and extend through the top of the housing 412. Terminals 43 electrically connect the circuit board 42 and the motor 32.

[0039] exist Figure 10 In the illustrated embodiment, a plurality of heat dissipation bosses 413 are provided on the surface of the end cap 411 adjacent to the circuit board 42. These bosses 413 are located near the electronic components on the circuit board 42 and are used to conduct heat away from the components, thereby preventing excessive temperature rise that could lead to component failure. A dedicated program is implemented on the circuit board 42 to drive the motor 32 to operate within the most economical and appropriate range based on feedback from the vehicle control unit, thereby achieving intelligent and efficient operation and air transportation.

[0040] Please refer to Figure 11 As shown, the present invention is as follows in one embodiment Figure 4The process diagram of the Roots rotor device in a rotation cycle is shown below. Figure 11 Specific introduction such as Figure 1-Figure 3 The working principle of the electric compressed air delivery device shown.

[0041] When the rated voltage is applied to the product, the circuit connection board 42 drives the motor 32 to rotate, and the motor 32 drives the speed increasing gears 223, 224 and the synchronous gears 221, 222 to operate. Figure 11 As shown in (a), the Roots rotor on the left (i.e., the first Roots rotor 141) rotates counterclockwise, while the Roots rotor on the right (i.e., the second Roots rotor 142) rotates clockwise, and the two operate synchronously. In order to facilitate the description of the product air conveying process, the Roots rotor on the left (i.e., the first Roots rotor 141) is used for description, and the Roots rotor on the right (i.e., the second Roots rotor 142) is used for description. Figure 11 As shown in (a), during the rotation process, air enters from the air inlet 11 and passes through the first inclined surface 133, forming an air intake area 1a (filled with gray area for convenience of display), and the Roots rotor on the left continues to rotate (as shown in FIG. Figure 11 (b) As shown in FIG, the Roots rotor on the left and the Roots rotor housing 13 form a closed area 1b, compressing the air in the original area 1a to form the air transport in the area 1b, and continue to rotate (as shown in FIG. Figure 11 (c) shows), the compressed air in area 1b continues to be transported to form the air in area 1c, and the air in area 1c continues to rotate toward the air outlet 12 (as shown in FIG. Figure 11 (d) forms air in region 1d, which is then discharged through the second inclined surface 134 and the air outlet 12. This completes an air delivery cycle. Since the Roots rotors 141 and 142 are three-blade rotors, one Roots rotor 141 and 142 delivers air three times during one rotation, while a pair of Roots rotors 141 and 142 delivers air six times, resulting in high air delivery efficiency.

[0042] To sum up, the technical solution of the electric air compression conveying device provided by the utility model is: 1. Adopting a Roots-type structural rotor design for air conveying; 2. Using synchronous gears and speed-increasing gears to connect the motor and the Roots rotor to drive the Roots rotor; 3. Designing a brushless motor and matching it with a dedicated controller to intelligently control the brushless motor to achieve the purpose of efficient operation.

[0043] In conjunction with the application of the present invention, before the vehicle starts, the electric air compression and delivery device provided by the present invention introduces fresh air with a certain compression ratio, and cooperates with the nozzle to spray atomized diesel for active combustion, so as to achieve the purpose of rapidly increasing the exhaust temperature in a short period of time, thereby meeting the requirements of emission regulations during the cold start stage of the engine. In addition, under special conditions such as long-term idling of the vehicle, the temperature of the exhaust gas is intelligently monitored to control the operation of the electric air compression and delivery device provided by the present invention, so that the exhaust temperature is in a temperature range that can meet emission regulations for a long time. Therefore, the technical route of exhaust combustion of the present invention is an effective method to solve the cold start problem, and it will be widely used in the subsequent implementation stage of laws and regulations. In this way, the present invention can meet the newly promulgated emission regulations and solve the problem that during the cold start process of the vehicle, due to the low temperature of the exhaust pipe, the exhaust gas emissions are not up to standard due to incomplete combustion, thus failing to meet the requirements of laws and regulations.

[0044] It should be noted that any changes made by those skilled in the art to the specific embodiments of the present invention do not depart from the scope of the claims of the present invention. Accordingly, the scope of the claims of the present invention is not limited to the aforementioned specific embodiments.

Claims

1. An electric air compression conveying device, characterized in that: It includes: A Roots rotor device comprising an air inlet, an air outlet, a Roots rotor housing, and a Roots rotor assembly, wherein a first chamber is defined within the Roots rotor housing, the air inlet and the air outlet are both in communication with the first chamber, and the Roots rotor assembly is located in the first chamber; A gearbox comprising a gearbox housing and a gear transmission device, wherein a second chamber is defined in the gearbox housing, the gear transmission device is located in the second chamber, and the gear transmission device is connected to the Roots rotor assembly; A motor device comprising a motor housing and a motor, wherein a third chamber is defined in the motor housing, and the motor is located in the third chamber; the motor is connected to the gear transmission device; a controller device comprising a controller housing and a circuit connection board, wherein a fourth chamber is defined within the controller housing, the circuit connection board is located in the fourth chamber, the circuit connection board is electrically connected to the motor, and the circuit connection board drives the motor to rotate; The motor drives the Roots rotor assembly to rotate via the gear transmission device, so that the Roots rotor device compresses the air sucked in by the air inlet and provides the compressed air to the vehicle's fuel engine through the air outlet.

2. The electric air compression conveying device according to claim 1, characterized in that: The Roots rotor assembly includes a first Roots rotor, a second Roots rotor, a first rotating shaft, and a second rotating shaft. The first Roots rotor, the second Roots rotor, the first rotating shaft, and the second rotating shaft are located in a first chamber. The first Roots rotor is sleeved on the first rotating shaft, and the first Roots rotor rotates synchronously with the first rotating shaft. The second Roots rotor is sleeved on the second rotating shaft, and the second Roots rotor rotates synchronously with the second rotating shaft. The first rotating shaft and the second rotating shaft are parallel to each other, and the first Roots rotor and the second Roots rotor are meshed with each other. The first rotating shaft and the second rotating shaft are both connected to the gear transmission device. The motor includes a motor stator, a motor rotor, and a motor shaft, wherein the motor stator, motor rotor, and motor shaft are located in the third chamber; the motor stator is disposed on the periphery of the motor rotor and is fixed to the motor housing; the motor rotor is sleeved on the motor shaft, and the motor shaft rotates synchronously with the motor rotor; the motor shaft is connected to the gear transmission device; The circuit connection board is electrically connected to the motor stator, and the circuit connection board inputs a current signal to the motor stator based on the monitored temperature of the vehicle exhaust pipe, thereby driving the motor rotor to rotate around a central axis; The motor shaft rotates synchronously with the motor rotor, and the motor shaft drives the first shaft and the second shaft to rotate in opposite directions at a constant speed through the gear transmission device, thereby driving the first Roots rotor and the second Roots rotor to rotate in opposite directions at a constant speed, thereby enabling the Roots rotor device to compress the air sucked into the air inlet.

3. The electric compressed air delivery device according to claim 2, characterized in that: The circuit connection board drives the motor to rotate based on the monitored temperature of the vehicle exhaust pipe; The Roots rotor device, the gear box, the motor device and the controller device are arranged in sequence from top to bottom along the axial direction of the motor shaft; The Roots rotor device, gear box, motor device and controller device are fixedly connected in sequence.

4. The electric compressed air delivery device according to claim 3, characterized in that: The gear transmission device includes a set of synchronous gears and a set of acceleration gears. The set of synchronous gears includes a first synchronous gear and a second synchronous gear, the first synchronous gear and the second synchronous gear are meshed with each other; the first synchronous gear is sleeved on the first rotating shaft, and the first rotating shaft rotates synchronously with the first synchronous gear; the second synchronous gear is sleeved on the second rotating shaft, and the second rotating shaft rotates synchronously with the second synchronous gear; The group of acceleration gears includes a first speed-increasing gear and a second speed-increasing gear, and the first speed-increasing gear and the second speed-increasing gear are meshed with each other; the first speed-increasing gear is sleeved on the motor shaft, and the first speed-increasing gear rotates synchronously with the motor shaft; the second speed-increasing gear is sleeved on the second shaft, and the second shaft rotates synchronously with the second speed-increasing gear. Wherein, the speed increasing ratio between the first speed increasing gear and the second speed increasing gear is less than 1.

5. The electric compressed air delivery device according to claim 4, characterized in that: The second chamber defined in the gearbox housing serves as a storage space for lubricating oil. The gear box housing is further provided with a mounting hole, which is communicated with the second chamber, and the mounting hole is sealed by a screw plug via a sealing ring.

6. The electric air compression conveying device according to claim 3, characterized in that: The first Roots rotor and the second Roots rotor each include a rotor body and three end heads arranged on the rotor body and evenly distributed along the circumferential direction. The end is an axisymmetric figure, and the symmetrical half of the end includes a first involute located at the top of the end, a third involute located at the bottom of the end, and a second involute connecting the first involute and the third involute; the connecting end of the second involute and the first involute is called the first endpoint, and the connecting end of the second involute and the third involute is called the second endpoint. During the rotation process, a predetermined gap is always maintained between the first involutes of the first and second Roots rotors and the inner wall of the Roots rotor housing; the meshing gap between the first and second Roots rotors is matched by the second end point and the second involute, and the meshing gap between the first and second Roots rotors is always maintained at a predetermined value.

7. The electric air compression conveying device according to claim 4, characterized in that: The portion of the first rotating shaft extending from the upper end of the first Roots rotor is called an upper bearing connection portion; the portion of the first rotating shaft extending from the lower end of the first Roots rotor and entering the gear box is called a gear connection portion; and the portion of the first rotating shaft extending from the lower end of the first Roots rotor and located in the Roots rotor housing is called a lower bearing connection portion. The portion of the second rotating shaft extending from the upper end of the second Roots rotor is called an upper bearing connecting portion; the portion of the second rotating shaft extending from the lower end of the second Roots rotor and entering the gear box is called a gear connecting portion; and the portion of the second rotating shaft extending from the lower end of the second Roots rotor and located in the Roots rotor housing is called a lower bearing connecting portion. The upper bearing connection portion and the lower bearing connection portion of the first rotating shaft are respectively mounted on corresponding bearing mounting bases via corresponding bearings and oil seal components; the upper bearing connection portion and the lower bearing connection portion of the second rotating shaft are respectively mounted on corresponding bearing mounting bases via corresponding bearings and oil seal components; the bearing mounting bases are mounted on the Roots rotor housing; The gear connecting portion of the first rotating shaft is sleeved with the first synchronous gear; the gear connecting portion of the second rotating shaft is sleeved with the second synchronous gear and the second speed-increasing gear.

8. The electric air compression conveying device according to claim 7, characterized in that: The portion of the motor shaft extending out of the upper end of the motor rotor seals the lubricating oil in the second chamber formed by the gear box through a corresponding bearing and a matching oil seal member; The portion of the motor shaft extending out from the lower end of the motor rotor is mounted on the controller housing through a corresponding bearing; The portion of the motor shaft extending out of the upper end of the motor rotor and entering the gear box is sleeved with the first speed-increasing gear.

9. The electric air compression conveying device according to claim 7, characterized in that: The Roots rotor device and the gear box are fixedly connected by mounting screws; The Roots rotor device and the gear box are sealed by a special-shaped sealing ring; The Roots rotor housing and the gearbox housing are installed and positioned by cooperating with the positioning pins and the positioning holes to ensure the coaxiality of the bearing mounting bases at both ends of the first rotating shaft along the axial direction of the first rotating shaft, and the coaxiality of the bearing mounting bases at both ends of the second rotating shaft along the axial direction of the second rotating shaft during the assembly process.

10. The electric air compression conveying device according to claim 2, characterized in that: The connecting area of ​​the Roots rotor housing connecting the first chamber and the air inlet is a first inclined surface, and the first inclined surface causes the transition space from the air inlet to the first chamber to gradually increase; The connecting area connecting the first chamber and the air outlet in the Roots rotor housing is a second inclined surface, and the second inclined surface causes the transition space from the air outlet to the first chamber to slowly increase.

11. The electric air compression conveying device according to claim 7, characterized in that: The top of the Roots rotor housing defines an installation chamber, which is located above the first chamber. A bearing mounting base corresponding to the upper bearing connection portion of the first rotating shaft is disposed in the mounting chamber; A bearing mounting base corresponding to the upper bearing connection portion of the second rotating shaft is disposed in the mounting chamber.

12. The electric air compression conveying device according to claim 2, characterized in that: The controller device further includes a terminal, the terminal being electrically connected to the circuit connection board and the motor. The controller housing includes an end cover and a shell having an opening at the bottom, and the end cover is buckled at the opening of the shell; The top of the housing is adjacent to the motor device, and the circuit connection board is accommodated in the housing; The terminal is fixed to the top of the shell, and the terminal passes through the top of the shell; A plurality of heat dissipation bosses are provided on a surface of one side of the end cover adjacent to the circuit connection board, and the heat dissipation bosses are close to the electronic components on the circuit connection board.

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