Dual-motor dual-control air heater

Abstract

The utility model discloses a double-motor double-control air heater, which relates to the field of air heating equipment and comprises a cylindrical shell, an air inlet cover is mounted at an air inlet at the front end of the shell, and an air outlet cover is mounted at an air outlet at the rear end of the shell; a connecting body, a combustion chamber assembly and a heat exchanger assembly are sequentially installed in the shell from front to back, a heat exchange motor and a combustion-supporting motor are sequentially installed in the connecting body from front to back, a rotatable heat exchange fan is arranged at the front end of the connecting body, a rotatable combustion-supporting fan is arranged at the rear end of the connecting body, and the combustion-supporting motor is connected with the heat exchange fan. The output end of the heat exchange motor is rotationally connected with the heat exchange fan, and the combustion-supporting motor is rotationally connected with the combustion-supporting fan. The problems of large heat loss, insufficient combustion, carbon deposition and the like of a traditional air heater are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of air heating equipment, and in particular to a dual-motor dual-control air heater. Background Technology

[0002] A typical air heater contains a motor inside its casing, with the motor's output connected to a combustion fan and a heat exchange fan. In practical applications, the combustion fan speed required for combustion and the heat exchange fan speed required for heat exchange are not the same, leading to problems such as excessive heat loss, incomplete combustion, and carbon buildup in ordinary air heaters.

[0003] Therefore, how to control the combustion fan and heat exchange fan separately according to combustion and heat exchange needs to achieve the optimal ratio, save fuel, improve heat exchange effect, reduce carbon deposits, and extend product life has become a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a dual-motor, dual-control air heater that solves the problems of large heat loss, incomplete combustion, and carbon buildup in traditional air heaters.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model provides a dual-motor dual-control air heater, including a housing, which is cylindrical in shape. An air inlet hood is installed at the air inlet at the front end of the housing, and an air outlet hood is installed at the air outlet at the rear end of the housing. Inside the housing, a connecting body, a combustion chamber assembly, and a heat exchanger assembly are installed sequentially from front to back. A heat exchange motor and a combustion-supporting motor are installed sequentially from front to back inside the connecting body. A rotatable heat exchange fan is provided at the front end of the connecting body, and a rotatable combustion-supporting fan is provided at the rear end of the connecting body. The output end of the heat exchange motor is rotatably connected to the heat exchange fan, and the combustion-supporting motor is rotatably connected to the combustion-supporting fan.

[0007] Optionally, the connector includes a base, which is annular in shape. A combustion-supporting air duct is provided at the bottom of the base, and a combustion-supporting air inlet pipe is provided on the side wall of the base. The chamber of the combustion-supporting air duct and the cavity of the combustion-supporting air inlet pipe are connected. A combustion-supporting fan is rotatably disposed in the combustion-supporting air duct, and the combustion-supporting fan and the combustion-supporting air duct are matched. The top end of the combustion-supporting air inlet pipe passes through a hole in the outer shell and is located on the outside of the outer shell.

[0008] A claw cavity is provided above the base. The heat exchange motor and the combustion motor are both installed inside the claw cavity. A limit ring is provided above the claw cavity. The heat exchange fan is located outside the limit ring. The output shaft of the heat exchange motor passes through the limit ring and is connected to the heat exchange fan in a drive system.

[0009] Optionally, a fixing hole is provided on the outer peripheral side of the substrate, and the substrate is connected to the inner wall of the outer shell through the fixing hole;

[0010] Motor mounting holes are provided at the top of the base and at the bottom of the limiting ring.

[0011] Optionally, the top of the base is V-shaped.

[0012] Optionally, the combustion chamber assembly includes an oil inlet, a combustion air inlet, an ignition plug, and an exhaust gas outlet pipe. The ignition plug is located at the oil inlet, the combustion air inlet is directly opposite the combustion fan, the exhaust gas outlet pipe is connected to the combustion chamber, and the top end of the exhaust gas outlet pipe passes through the housing and is located on the outside of the housing.

[0013] Optionally, a heat exchange channel is provided between the heat exchanger assembly and the housing, and the heat exchanger assembly includes a temperature sensor located within the heat exchange channel.

[0014] Optionally, a fixing plate is also included, on which the outer casing is mounted, and the combustion air inlet pipe and the exhaust gas outlet pipe both pass through the fixing plate.

[0015] Optionally, the heat exchange motor, the combustion motor, and the temperature sensor are all connected to an external controller.

[0016] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0017] This invention ensures that the combustion and heat exchange of the heater are in optimal condition by separately controlling the heat exchange motor and the combustion motor. This improves heat exchange efficiency, saves fuel, reduces carbon deposits, and ensures stable and reliable operation of the heater. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a cross-sectional view of the dual-motor dual-control air heater of this utility model;

[0020] Figure 2 This is a front view of the connector of this utility model;

[0021] Figure 3 This is a side view of the connector of this utility model;

[0022] Figure 4 This is a bottom view of the connector of this utility model;

[0023] Figure 5 This is a top view of the connector of this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Outer casing; 2. Air inlet hood; 3. Air outlet hood; 4. Connector; 5. Combustion chamber assembly; 6. Heat exchanger assembly; 7. Heat exchange motor; 8. Combustion motor; 9. Heat exchange fan; 10. Combustion fan; 11. Mounting plate;

[0025] 41. Base; 42. Claw cavity; 43. Limiting ring;

[0026] 411. Combustion-supporting air duct; 412. Combustion-supporting air inlet pipe; 413. Fixing hole;

[0027] 51. Exhaust gas outlet pipe; 61. Temperature sensor. Detailed Implementation

[0028] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0029] like Figure 1-5 As shown, this utility model provides a dual-motor dual-control air heater, including a housing 1, which is cylindrical. An air inlet hood 2 is installed at the air inlet at the front end of the housing 1, and an air outlet hood 3 is installed at the air outlet at the rear end of the housing 1. Inside the housing 1, from front to back, a connecting body 4, a combustion chamber assembly 5, and a heat exchanger assembly 6 are installed sequentially. Inside the connecting body 4, from front to back, a heat exchange motor 7 and a combustion-supporting motor 8 are installed sequentially. A rotatable heat exchange fan 9 is provided at the front end of the connecting body 4, and a rotatable combustion-supporting fan 10 is provided at the rear end of the connecting body 4. The output end of the heat exchange motor 7 is rotatably connected to the heat exchange fan 9, and the combustion-supporting motor 8 is rotatably connected to the combustion-supporting fan 10.

[0030] Both the heat exchange motor 7 and the combustion-supporting motor 8 are brushless motors. Under the control of an external controller, the heat exchange motor 7 and the combustion-supporting motor 8 operate at different speeds to obtain the required heat exchange air volume and combustion-supporting air volume, meeting the needs of different scenarios.

[0031] Specifically, the connecting body 4 includes a base 41, which is annular in shape. A combustion-supporting air duct 411 is provided at the bottom of the base 41, and a combustion-supporting air inlet pipe 412 is provided on the side wall of the base 41. The chamber of the combustion-supporting air duct 411 and the cavity of the combustion-supporting air inlet pipe 412 are connected. The combustion-supporting fan 10 is rotatably disposed in the combustion-supporting air duct 411, and the combustion-supporting fan 10 and the combustion-supporting air duct 411 are matched. The top end of the combustion-supporting air inlet pipe 412 passes through a hole in the outer shell 1 and is located on the outside of the outer shell 1.

[0032] A claw cavity 42 is provided above the base 41. The heat exchange motor 7 and the combustion motor 8 are both installed inside the claw cavity 42. A limit ring 43 is provided above the claw cavity 42. The heat exchange fan 9 is located outside the limit ring 43. The output shaft of the heat exchange motor 7 passes through the limit ring 43 and is connected to the heat exchange fan 9 in a driving connection.

[0033] The connecting body 4 is a die-cast aluminum part of a special shape, and the base 41, the claw cavity 42 and the limiting ring 43 are integrally formed.

[0034] Specifically, a fixing hole 413 is provided on the outer peripheral side of the base 41, and the base 41 is connected to the inner wall of the outer shell 1 through the fixing hole 413;

[0035] Motor mounting holes are provided at the top of the base 41 and at the bottom of the limiting ring 43.

[0036] In practice, for ease of installation, the base 41 can also be directly installed on the burner through the fixing hole 413.

[0037] Specifically, the top of the base 41 is V-shaped. This V-shaped top of the base 41 helps reduce wind resistance and improves heat exchange and ventilation efficiency.

[0038] Specifically, the combustion chamber assembly 5 includes an oil inlet, a combustion air inlet, an ignition plug, and an exhaust gas outlet pipe 51. The ignition plug is located at the oil inlet, the combustion air inlet is directly opposite the combustion fan 10, the exhaust gas outlet pipe 51 is connected to the combustion chamber, and the top end of the exhaust gas outlet pipe 51 passes through the outer casing 1 and is located on the outside of the outer casing 1.

[0039] Specifically, a heat exchange channel is provided between the heat exchanger assembly 6 and the outer casing 1, and the heat exchanger assembly 6 includes a temperature sensor 61 located within the heat exchange channel.

[0040] Specifically, it also includes a fixing plate 11, on which the outer shell 1 is mounted, and the combustion air inlet pipe 412 and the exhaust gas outlet pipe 51 both pass through the fixing plate 11.

[0041] Specifically, the heat exchange motor 7, the combustion motor 8, and the temperature sensor 61 are all connected to an external controller.

[0042] The dual-motor dual-control air heater provided by this utility model is used for vehicle cab heating and windshield defrosting. Applicable vehicle types include trucks, engineering vehicles, freight vehicles, buses, tricycles and pure electric vehicles.

[0043] The usage process of this utility model is as follows:

[0044] Ignition Operation: After the ignition plug is preheated, the fuel pump supplies fuel to the combustion chamber assembly 5 through the fuel inlet. At this time, the external controller controls the combustion motor 8 to work, which drives the combustion fan 10 located in the combustion air duct 411 to rotate. When the combustion fan 10 is working, outside air enters the combustion chamber assembly 5 through the combustion air inlet pipe 412 and the combustion air duct 411 in sequence. At this time, the combustion fan 10 rotates slowly to facilitate successful ignition at low temperatures. The heat exchange motor 7 does not work at this time to avoid blowing out cold air.

[0045] Heat exchange operation: As combustion proceeds smoothly, the temperature of the heat exchanger continues to rise. When the temperature sensor 61 detects that the temperature of the heat exchanger has risen to 80°C, the external controller controls the heat exchange motor 7 to work. The heat exchange motor 7 drives the heat exchange fan 9 to rotate. External cold air enters the interior of the outer shell 1 through the air inlet hood 2. After being heated by the heat exchanger, the hot air is blown out through the air outlet hood 3, increasing the temperature inside the cab.

[0046] Temperature control operation: Temperature sensor 61 is used to detect the temperature of the heat exchanger and ensure that the temperature of the heat exchanger is controlled between 80℃ and 100℃ to avoid harm to passengers and heated objects.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A dual-motor, dual-control air heater, characterized in that: The device includes an outer shell (1), which is cylindrical. An air inlet hood (2) is installed at the air inlet at the front end of the outer shell (1), and an air outlet hood (3) is installed at the air outlet at the rear end of the outer shell (1). Inside the outer shell (1), a connecting body (4), a combustion chamber assembly (5), and a heat exchanger assembly (6) are installed sequentially from front to back. Inside the connecting body (4), a heat exchange motor (7) and a combustion motor (8) are installed sequentially from front to back. A rotatable heat exchange fan (9) is provided at the front end of the connecting body (4), and a rotatable combustion fan (10) is provided at the rear end of the connecting body (4). The output end of the heat exchange motor (7) is rotatably connected to the heat exchange fan (9), and the combustion motor (8) and the combustion fan (10) are rotatably connected. The connector (4) includes a base (41), which is annular. A combustion-supporting air duct (411) is provided at the bottom of the base (41), and a combustion-supporting air inlet pipe (412) is provided on the side wall of the base (41). The chamber of the combustion-supporting air duct (411) and the cavity of the combustion-supporting air inlet pipe (412) are connected. The combustion-supporting fan (10) is rotatably disposed in the combustion-supporting air duct (411), and the combustion-supporting fan (10) and the combustion-supporting air duct (411) are matched. The top end of the combustion-supporting air inlet pipe (412) passes through the hole on the outer shell (1) and is located on the outside of the outer shell (1). A claw cavity (42) is provided above the base (41). The heat exchange motor (7) and the combustion motor (8) are both installed inside the claw cavity (42). A limit ring (43) is provided above the claw cavity (42). The heat exchange fan (9) is located outside the limit ring (43). The output shaft of the heat exchange motor (7) passes through the limit ring (43) and is connected to the heat exchange fan (9) in a transmission. The base (41), the claw cavity (42), and the limiting ring (43) are integrally formed.

2. The dual-motor dual-control air heater according to claim 1, characterized in that: A fixing hole (413) is provided on the outer peripheral side of the base (41), and the base (41) is connected to the inner wall of the outer shell (1) through the fixing hole (413); Motor mounting holes are provided at the top of the base (41) and at the bottom of the limiting ring (43).

3. The dual-motor dual-control air heater according to claim 1, characterized in that: The top of the base (41) is V-shaped.

4. The dual-motor dual-control air heater according to claim 1, characterized in that: The combustion chamber assembly (5) includes an oil inlet, a combustion air inlet, an ignition plug, and an exhaust gas outlet pipe (51). The ignition plug is located at the oil inlet, the combustion air inlet is directly opposite the combustion fan (10), the exhaust gas outlet pipe (51) is connected to the combustion chamber, and the top end of the exhaust gas outlet pipe (51) passes through the outer casing (1) and is located outside the outer casing (1).

5. The dual-motor dual-control air heater according to claim 4, characterized in that: A heat exchange channel is provided between the heat exchanger assembly (6) and the outer shell (1). The heat exchanger assembly (6) includes a temperature sensor (61) located within the heat exchange channel.

6. The dual-motor dual-control air heater according to claim 4, characterized in that: It also includes a fixing plate (11), on which the outer shell (1) is mounted, and the combustion air inlet pipe (412) and the exhaust gas outlet pipe (51) both pass through the fixing plate (11).

7. The dual-motor dual-control air heater according to claim 5, characterized in that: The heat exchange motor (7), the combustion motor (8), and the temperature sensor (61) are all connected to an external controller.

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