Automobile rear heater assembly

Abstract

The utility model provides a kind of automobile rear heater assembly, belong to vehicle air conditioning system technical field.The rear heater assembly of this is fixedly installed in the shell below automobile front row seat, the shell air outlet is towards rear seat, install axial fan at air inlet, rear movement core installed in the shell is between air outlet and axial fan, the design that outlet branch pipe, inlet branch pipe are communicated with this rear movement core, solve the problem that the existing technology automobile rear row heating effect is poor, cannot satisfy the demand of user in high and cold area.This assembly includes the shell below automobile front row seat, the side towards rear seat is provided with air outlet;Axial fan is installed at the air inlet of shell;Rear movement core is installed in the shell, between air outlet and axial fan;Outlet branch pipe, the hot state cooling liquid of cooling line of automobile engine is flowed into rear movement core by outlet branch pipe;Inlet branch pipe, the cold state cooling liquid in rear movement core is backflowed to cooling line from inlet branch pipe.

Description

Technical Field

[0001] This utility model belongs to the technical field of vehicle air conditioning systems, and in particular relates to a rear heating assembly for automobiles. Background Technology

[0002] To meet users' comfort needs in low-temperature winter environments, the existing automotive air conditioning system uses a centrifugal fan connected to the front air vents to guide the warm air from the front vents to the rear seats.

[0003] Firstly, the centrifugal fan limits the airflow; secondly, the use of warm air from the front vents not only results in a complex duct layout but also leads to lower temperatures of the warm air directed to the rear, resulting in poor heating performance in the rear and failing to meet the needs of users in cold regions. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a rear heating assembly for automobiles, which solves the problems of insufficient air volume, complex air duct layout, and poor heating effect in the heating of the rear seats in existing automobile air conditioning systems.

[0005] To achieve the above and other related objectives, this utility model provides a rear heating assembly for automobiles, comprising: The housing is fixedly installed under the front seats of the car, and the side facing the rear seats has an air vent. An axial flow fan is installed at the air inlet of the housing; The rear mechanism is installed inside the housing and located between the air outlet and the axial flow fan; The hot coolant from the cooling pipes of the automobile engine flows into the rear engine core through the outlet branch pipe. The inlet branch pipe allows the cooled coolant inside the rear movement to flow back to the cooling pipe.

[0006] As described above, the automotive rear heating assembly of this utility model has at least the following beneficial effects: This automotive rear heating assembly is fixedly installed under the front seats of the vehicle via a housing with air outlets facing the rear seats and an axial fan installed at the air inlet. The rear coolant core is installed inside the housing between the air outlets and the axial fan. Both the outlet and inlet pipes are connected to this rear coolant core. When the user needs the rear heating assembly to heat the rear seats, hot coolant flows from the outlet pipe into the rear coolant core. The axial fan carries away the heat from the core and blows it towards the rear passengers. The cooled hot coolant then becomes cold. After the coolant is cooled, it flows back to the engine's cooling system through the inlet branch pipe. Compared to existing technologies that use centrifugal fans to connect the front air vents and guide the warm air from the front vents to the rear, the rear heating assembly of this car has a larger air volume. By installing the entire rear heating assembly under the front seats, interior space is saved. Integrating the rear heating lines into the engine's cooling system not only simplifies the air duct layout but also ensures heating performance while making full use of energy, thus meeting the needs of users in cold regions. Attached Figure Description

[0007] Figure 1 The diagram shown is a schematic of the installation position of a rear heating assembly for automobiles according to this utility model.

[0008] Figure 2 The diagram shown is a schematic diagram of the principle of a rear heating assembly for automobiles according to this utility model.

[0009] Figure 3 The diagram shown is an exploded view of a rear heating assembly for automobiles according to this utility model.

[0010] Component designation explanation Cooling pipe 1, rear heater assembly 3, rear core 31, axial fan 32, housing 33, speed control resistor 34, plug 35, liquid outlet branch pipe 4, liquid inlet branch pipe 5, solenoid water valve 61, flow switch 62, air volume switch 63. Detailed Implementation

[0011] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0012] Please see Figures 1 to 3It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0013] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0014] Please see Figure 1 This utility model provides a rear air heater assembly 3 for automobiles, which solves the problem in the prior art that uses a centrifugal fan connected to the front air vents to guide the warm air from the front vents to the rear. This solution has limited airflow, a complex duct layout, and results in lower temperatures of the warm air guided to the rear, leading to poor rear heating and failing to meet the needs of users in cold regions. The rear air heater assembly 3 includes: like Figure 3 The housing 33 shown is fixedly installed under the front seat of the car, and an air vent is provided on the side facing the rear seat.

[0015] like Figure 3 The rear fan shown is an axial flow fan 32, which is installed at the air inlet of the housing 33. Generally speaking, the air inlet and the air outlet are arranged opposite each other for the best energy utilization. Of course, it is also possible to arrange the air inlet on both sides of the air outlet.

[0016] Because the axial fan 32 has a larger air volume but relatively lower air pressure, while the centrifugal fan has higher air pressure but relatively smaller air volume, the axial fan 32 is obviously more suitable for the relatively small space of the front seat of a car, as it can deliver more warm air and is quieter.

[0017] like Figure 3 The rear unit 31 shown is installed inside the housing 33, located between the air outlet and the axial fan 32; when the axial fan 32 generates airflow, it can carry away the heat from the rear unit 31 and send it from the air outlet to the passenger sitting in the rear seat.

[0018] like Figure 2 and Figure 3The hot coolant from the cooling pipe 1 of the automobile engine flows into the rear engine core 31 through the outlet branch pipe 4 shown.

[0019] like Figure 2 and Figure 3 The inlet branch pipe 5 shown is through which the cold coolant in the rear movement 31 flows back to the cooling pipe 1.

[0020] The rear heating assembly 3 of this vehicle is fixedly installed under the front seats of the car via a housing 33. The air outlet of the housing 33 faces the rear seats, and an axial flow fan 32 is installed at the air inlet. The rear core 31, installed inside the housing 33, is located between the air outlet and the axial flow fan 32. The liquid outlet pipe 4 and the liquid inlet pipe 5 are both connected to the rear core 31. When the user needs the rear heating assembly 3 to heat the rear seats, hot coolant flows from the liquid outlet pipe 4 into the rear core 31. The axial flow fan 32 carries away the heat from the rear core 31 and blows it onto the passengers sitting in the rear seats, reducing heat loss. After the hot coolant is cooled, it flows back to the engine's cooling pipe 1 through the inlet branch pipe 5. Compared with the existing technology that uses a centrifugal fan to connect the front air vents and guide the warm air from the front air vents to the rear, the rear air heater assembly 3 of this car has a larger air volume. By installing the entire rear air heater assembly 3 under the front seats, interior space is saved. The rear heating pipes are integrated into the engine's cooling pipes 1, which not only simplifies the air duct layout but also ensures heating effect while making full use of energy, thus meeting the needs of users in cold regions.

[0021] In another implementation, please refer to Figures 1 to 3 The vehicle has two rear heating assemblies 3, one installed under the driver's seat and the other under the passenger seat; two liquid outlet branches 4, each connected to the rear core 31 of the two rear heating assemblies 3; two liquid inlet branches 5, each connected to the rear core 31 of the two rear heating assemblies 3; and two axial flow fans 32, which are connected in parallel, to fully guarantee the heating needs of passengers sitting in the rear seats.

[0022] In another implementation, please refer to Figure 2 and Figure 3An electromagnetic water valve 61 is installed on the outlet branch pipe 4 to control the flow rate of hot coolant flowing into the rear engine core 31. The electromagnetic water valve 61 is controlled by a flow switch 62 located in the rear of the vehicle. An air volume switch 63 is installed on the axial flow fan 32 in the rear of the vehicle. The flow switch 62 controls the opening and closing of the electromagnetic water valve 61, thereby controlling the flow rate of hot coolant entering the rear engine core 31. The air volume switch 63 controls the air volume of the axial flow fan 32. This allows rear passengers to flexibly adjust the heating temperature, thus solving the problem of rear passengers having difficulty adjusting the rear temperature and further improving the thermal comfort inside the vehicle.

[0023] In another implementation, please refer to Figure 1 and Figure 3 A bracket is welded under the front seat of the car, and the housing 33 is fixed to the bracket by bolts; this ensures the stability of the rear heating assembly 3 of the car, reduces vibration and noise, and the installation method facilitates later maintenance and repair; installing it under the front seat also saves interior space.

[0024] In another implementation, please refer to Figures 1 to 3 Both the air inlet and the air outlet are equipped with grilles and air guides; the liquid outlet branch pipe 4 and the liquid inlet branch pipe 5 are fixedly connected by water pipe fixing blocks; the materials of the housing 33, the grille, the air guide, and the water pipe fixing blocks are all PP+TD20 (polypropylene material with added TD20 additive), which has both lightweight and high temperature resistance characteristics. The lightweight design reduces the overall weight of the rear heating assembly 3, improving the vehicle's fuel economy and handling performance, while the high temperature resistance ensures the stable operation of the device in high temperature environments; at the same time, the spacing between the air guides at the air inlet is set to 4mm to prevent impurities from entering the rear core 31.

[0025] In another implementation, please refer to Figure 3 The rear heating element 31 is made of aluminum alloy and is arranged perpendicular to the airflow path of the axial fan 32. This increases the effective heat exchange area by 30%, maximizing heat exchange efficiency. The aluminum alloy heating element has excellent thermal conductivity, enabling it to quickly transfer heat to the air and improving the thermal efficiency of the rear heating assembly 3. Simultaneously, the aluminum alloy material has high thermal stability, maintaining stable performance in high-temperature environments, extending the service life of the rear heating element 31, improving the safety of the rear heating assembly 3, and reducing safety hazards caused by thermal expansion. The rear heating element 31 is manufactured using precision processes, ensuring the accuracy and consistency of its structure, improving product quality and reliability. By optimizing the structural design and manufacturing process of the rear heating element 31, its heat exchange efficiency and performance are further improved.

[0026] In another implementation, please refer to Figure 2 and Figure 3 The speed regulating resistor 34 of the air volume switch 63 is made of a high-temperature resistant ceramic matrix (temperature resistance ≥150℃), which ensures the stable operation of the air volume switch 63 in high-temperature environments, improves the reliability and safety of the rear heating assembly 3, reduces the failure rate caused by high temperature, and extends the service life of the air volume switch 63.

[0027] In another implementation, please refer to Figure 3 The rear heating assembly 3 can also be equipped with a separate plug 35, allowing it to operate independently.

[0028] In other implementations, such as Figure 1 and Figure 3 As shown, the housing 33, the grille, the air guide plate, the axial fan 32, and the rear core 31 are all modular designs, which improve the production efficiency of the rear heating assembly 3, enhance the interchangeability of parts, and reduce production costs.

[0029] In summary, this utility model, through a housing 33 fixedly installed under the front seat of a car, with the air outlet of the housing 33 facing the rear seat and an axial flow fan 32 installed at the air inlet, and a rear heating element 31 installed inside the housing 33 located between the air outlet and the axial flow fan 32, with the liquid outlet branch pipe 4 and the liquid inlet branch pipe 5 both connected to the rear heating element 31, allows for efficient cooling. When the user requires the rear heating assembly 3 to heat the rear seats, hot coolant flows from the liquid outlet branch pipe 4 into the rear heating element 31. The axial flow fan 32 then carries away the heat from the rear heating element 31 and blows it towards the passengers sitting in the rear seats, thus reducing heat loss. After the hot coolant is cooled, it flows back to the engine's cooling pipe 1 through the inlet branch pipe 5. Compared to existing technologies that use centrifugal fans to connect to the front air vents and guide the warm air from the front vents to the rear, the rear heating assembly 3 of this vehicle has a larger air volume. Installing the entire rear heating assembly 3 under the front seats saves interior space. Integrating the rear heating pipes into the engine's cooling pipes 1 simplifies the air duct layout and ensures heating efficiency while fully utilizing energy, thus meeting the needs of users in cold regions. Therefore, this invention effectively overcomes the shortcomings of existing technologies and has high industrial application value.

[0030] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A rear heating assembly for automobiles, characterized in that, include: The housing is fixedly installed under the front seats of the car, and the side facing the rear seats has an air vent. A rear fan is installed at the air inlet of the housing; the rear fan is an axial flow fan. The rear mechanism is installed inside the housing and located between the air outlet and the axial flow fan; The hot coolant from the cooling pipes of the automobile engine flows into the rear engine core through the outlet branch pipe. The inlet branch pipe allows the cooled coolant inside the rear movement to flow back to the cooling pipe.

2. The automotive rear heating assembly according to claim 1, characterized in that: There are two, one installed under the driver's seat and the other under the passenger seat; There are two liquid outlet branches, which are respectively connected to the rear core of each of the two rear heating assemblies; There are two liquid inlet branches, which are respectively connected to the rear core of each of the two rear heating assemblies; Each of the vehicle rear heating assemblies has two axial flow fans, which are connected in parallel.

3. The automotive rear heating assembly according to claim 1, characterized in that: The outlet branch pipe is equipped with an electromagnetic water valve to control the flow rate of hot coolant flowing into the rear mechanism; The electromagnetic water valve is controlled by a flow switch installed in the rear of the car. The axial flow fan is equipped with an air volume switch, which is located in the rear seat of the car.

4. The automotive rear heating assembly according to claim 1, characterized in that: A bracket is welded under the front seat of the car, and the housing is fixed to the bracket by bolts.

5. The automotive rear heating assembly according to claim 1, characterized in that: Both the air inlet and the air outlet are equipped with grilles and air guide plates; Both the liquid outlet branch pipe and the liquid inlet branch pipe are fixedly connected by a water pipe fixing block. The shell, the grille, the air guide plate, and the water pipe fixing block are all made of PP+TD20.

6. The automotive rear heating assembly according to claim 1, characterized in that: The rear core is made of aluminum alloy and is arranged perpendicular to the airflow path of the axial fan.

7. The automotive rear heating assembly according to claim 3, characterized in that: The speed-regulating resistor of the airflow switch is made of a high-temperature resistant ceramic matrix.

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