Automobile air conditioner speed regulating device with over-temperature protection function

Abstract

The utility model discloses an automobile air conditioner speed regulation device with an over-temperature protection function, which comprises a speed regulation module main body, a metal seat, a PCB (printed circuit board), an auxiliary safety resistor and an alarm, the PCB is fixedly mounted on the inner side of the speed regulation module main body, a temperature fuse and the auxiliary safety resistor are fixedly mounted on the surface of the PCB, and the temperature fuse and the auxiliary safety resistor are fixedly mounted on the inner side of the metal seat. A temperature controller and an alarm are further fixedly installed on the inner side of the speed regulation module body, a side groove is formed in the side wall of the speed regulation module body, a plurality of cooling fins are evenly and fixedly installed on the surface of the metal base, the surface of the side, facing the side groove, of the metal base is coated with heat conduction silicone grease, and the heat conduction silicone grease makes contact with an auxiliary safety resistor. The auxiliary fuse resistor is arranged to share the large current of the temperature fuse and dissipate the generated heat, so that the temperature fuse does not need to bear the large current for a long time to be damaged.

Description

Technical Field

[0001] The present application relates to the technical field of automobile air conditioning, and in particular to an automobile air conditioning speed regulating device with an over-temperature protection function. Background Art

[0002] The automobile air conditioning speed control device, that is, the speed control module, plays a vital role in the automobile air conditioning system. By working in conjunction with other components of the automobile air conditioning system, the speed control module can achieve precise control of parameters such as temperature and humidity, which helps to provide passengers with a more comfortable in-car environment. The speed control module also has functions such as pressure difference protection, overcurrent, overload, and thermal protection. These functions can ensure the safe operation of the automobile air conditioning system and prevent damage caused by faults or abnormal operations. When the temperature of the speed control device is too high, the overtemperature protection will be triggered, but during the protection process, the temperature fuse may be damaged due to the continuous large current passing through, affecting the normal use of the device. Utility Model Content

[0003] The purpose of this application is to provide an automobile air-conditioning speed control device with an over-temperature protection function, which solves the problem proposed in the background art that when the temperature of the speed control device is too high, the over-temperature protection will be triggered, but during the protection process, the temperature fuse may be damaged due to the continuous large current passing through, affecting the normal use of the device.

[0004] To achieve the above-mentioned objectives, the present application provides the following technical solutions: an automobile air-conditioning speed control device with an over-temperature protection function, comprising a speed control module body, a metal seat, a PCB board, a secondary fuse resistor and an alarm, wherein the PCB board is fixedly installed on the inner side of the speed control module body, the surface of the PCB board is fixedly installed with a temperature fuse and a secondary fuse resistor, the inner side of the speed control module body is also fixedly installed with a temperature controller and an alarm, the side wall of the speed control module body is provided with a side groove, a plurality of heat sinks are evenly fixedly installed on the surface of the metal seat, the surface of the metal seat facing the side groove is coated with thermal conductive silicone grease, and the thermal conductive silicone grease is in contact with the secondary fuse resistor.

[0005] In this technical solution, the temperature fuse can be protected by a secondary fuse resistor, an alarm and a temperature controller. When the heat generated by the temperature fuse due to the passage of current exceeds a predetermined value, the temperature sensor will be notified through the temperature sensor and the control circuit will be closed, so that the secondary fuse resistor is connected to the circuit. The secondary fuse resistor will share the current of the temperature fuse, thereby avoiding damage caused by the temperature fuse being subjected to large current for a long time. In this process, the alarm will be connected to the circuit and send an alarm signal to remind the driver to turn off the air conditioner or power off the vehicle in time. At the same time, the heat of the secondary fuse resistor can be dissipated in time through the metal seat, heat sink, thermal grease and secondary fuse resistor. The thermal grease is in contact with the secondary fuse resistor. After the secondary fuse resistor is connected to the circuit, the heat generated by the current will be absorbed by the thermal grease in time and transferred to the metal seat and the heat sink on the outside, avoiding heat accumulation on the inside and causing damage to the temperature fuse due to being in a high temperature environment for a long time.

[0006] As an optional solution of the technical solution of the present application, the temperature fuse and the secondary fuse resistor are connected in parallel in the circuit.

[0007] As an optional solution to the technical solution of the present application, the left and right side walls of the metal seat are fixedly connected with mounting plates, and the surface of the mounting plate is threadedly connected with fixing bolts, which pass through the mounting plate and are threadedly connected to the side walls of the speed control module body.

[0008] As an optional solution of the technical solution of the present application, a heat dissipation fan is fixedly mounted on the surface of the metal seat on one side of the heat sink.

[0009] As an optional solution of the technical solution of the present application, the alarm is connected in series with the secondary safety resistor in the circuit.

[0010] As an optional solution of the technical solution of the present application, the temperature sensor arranged inside the temperature controller is connected to the temperature fuse.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. This application can protect the temperature fuse through a secondary fuse resistor, an alarm and a temperature controller. When the heat generated by the temperature fuse due to the passage of current exceeds a predetermined value, the temperature sensor will be notified through the temperature sensor, and the control circuit will be closed to connect the secondary fuse resistor to the circuit. The secondary fuse resistor will share the current of the temperature fuse, thereby avoiding damage to the temperature fuse caused by long-term exposure to large current.

[0013] 2. This application uses a metal seat, a heat sink, thermal grease and a secondary fuse resistor to dissipate the heat of the secondary fuse resistor in a timely manner. The thermal grease is in contact with the secondary fuse resistor. After the secondary fuse resistor is connected to the circuit, the heat generated by the current will be absorbed by the thermal grease in a timely manner and transferred to the metal seat and the heat sink on the outside, avoiding heat accumulation on the inside and causing damage to the temperature fuse due to being in a high temperature environment for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0015] Figure 1 This is an overall view of an automobile air-conditioning speed regulating device with an over-temperature protection function according to the present application;

[0016] Figure 2 This is a schematic cross-sectional view of a vehicle air-conditioning speed regulating device with an over-temperature protection function according to the present application;

[0017] Figure 3 This application discloses an over-temperature protection principle diagram of an automobile air-conditioning speed regulating device with an over-temperature protection function.

[0018] In the figure: 1. Speed control module body; 11. Side groove; 12. Mounting plate; 13. Fixing bolts; 2. Metal seat; 3. Heat sink; 4. Cooling fan; 5. Thermal grease; 6. PCB board; 7. Temperature controller; 8. Auxiliary fuse resistor; 9. Temperature fuse; 10. Alarm. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, they are further elaborated below in conjunction with specific implementation methods.

[0020] like Figure 1 and Figure 2 As shown, an automobile air-conditioning speed regulating device with an over-temperature protection function includes a speed regulating module body 1, a metal base 2, a PCB board 6, a secondary fuse resistor 8 and an alarm 10. The side wall of the speed regulating module body 1 is provided with a side groove 11. A plurality of heat sinks 3 are evenly and fixedly mounted on the surface of the metal base 2. The side surface of the metal base 2 facing the side groove 11 is coated with thermal grease 5. The thermal grease 5 is in contact with the secondary fuse resistor 8. A heat dissipation fan 4 is fixedly mounted on the surface of the metal base 2 on one side of the heat sink 3. The thermal grease 5 can promptly conduct away the heat of the secondary fuse resistor 8.

[0021] like Figure 2As shown, a PCB board 6 is fixedly installed on the inner side of the speed control module body 1, and a temperature fuse 9 and a secondary fuse resistor 8 are fixedly installed on the surface of the PCB board 6. A temperature controller 7 and an alarm 10 are also fixedly installed on the inner side of the speed control module body 1. The temperature controller 7 and the alarm 10 are both connected in the circuit to protect the temperature fuse 9.

[0022] like Figure 3 As shown, the temperature fuse 9 and the auxiliary fuse resistor 8 are connected in parallel in the circuit. The parallel connection can shunt the current. The alarm 10 is connected in series with the auxiliary fuse resistor 8 in the circuit. The temperature sensor arranged on the inside of the temperature controller 7 is connected to the temperature fuse 9. The temperature sensor can continuously detect the temperature of the temperature fuse 9 and transmit it back to the temperature controller 7 in real time. When the preset temperature value is reached, it will control the closed circuit.

[0023] The left and right side walls of the metal base 2 are fixedly connected with mounting plates 12 , and the surface of the mounting plates 12 is threadedly connected with fixing bolts 13 . The fixing bolts 13 penetrate the mounting plates 12 and are threadedly connected to the side walls of the speed control module body 1 .

[0024] In actual use, when the heat generated by the temperature fuse 9 due to the passage of current exceeds a predetermined value, the temperature sensor will be notified through the temperature sensor, and the control circuit will be closed, so that the auxiliary fuse resistor 8 is connected to the circuit. The auxiliary fuse resistor 8 will share the current of the temperature fuse 9, thereby avoiding damage caused by the temperature fuse 9 being subjected to a large current for a long time. In this process, the alarm 10 will be connected to the circuit and send an alarm signal to remind the driver to turn off the air conditioner or power off the vehicle in time. The thermal grease 5 is in contact with the auxiliary fuse resistor 8. After the auxiliary fuse resistor 8 is connected to the circuit, the heat generated by the current will be absorbed by the thermal grease 5 in time and transferred to the metal seat 2 and the outer heat sink 3, avoiding the heat inside. The accumulation causes the temperature fuse 9 to be damaged due to being in a high-temperature environment for a long time. It should be noted that the temperature controller 7, also known as the thermostat, is mainly composed of two parts: temperature detection and temperature control. Most thermostats also have alarm and protection functions. Its working principle is to automatically sample and monitor the ambient temperature through a temperature sensor. The temperature sensor will continuously detect the ambient temperature and feed back the real-time temperature information to the thermostat. When the ambient temperature is higher than the control set value, the thermostat will start the control circuit. The control circuit here can be a simple switching circuit or a complex electronic circuit. Therefore, it is only used here and no structural and functional improvements are made to it, so it will not be described in detail.

Claims

1. An automobile air-conditioning speed regulating device with an over-temperature protection function, comprising a speed regulating module body (1), a metal base (2), a PCB board (6), a secondary safety resistor (8) and an alarm (10), characterized in that: A PCB board (6) is fixedly mounted on the inner side of the speed regulating module body (1), a temperature fuse (9) and a secondary fuse resistor (8) are fixedly mounted on the surface of the PCB board (6), a temperature controller (7) and an alarm (10) are also fixedly mounted on the inner side of the speed regulating module body (1), a side groove (11) is provided on the side wall of the speed regulating module body (1), a plurality of heat sinks (3) are evenly fixedly mounted on the surface of the metal seat (2), a side surface of the metal seat (2) facing the side groove (11) is coated with thermal conductive silicone grease (5), and the thermal conductive silicone grease (5) is in contact with the secondary fuse resistor (8).

2. The automobile air-conditioning speed regulating device with over-temperature protection function according to claim 1, characterized in that: The temperature fuse (9) and the secondary fuse resistor (8) are connected in parallel in the circuit.

3. The automobile air-conditioning speed regulating device with over-temperature protection function according to claim 1, characterized in that: The left and right side walls of the metal seat (2) are fixedly connected with a mounting plate (12), and the surface of the mounting plate (12) is threadedly connected with a fixing bolt (13), and the fixing bolt (13) passes through the mounting plate (12) and is threadedly connected to the side wall of the speed control module body (1).

4. The automobile air-conditioning speed regulating device with over-temperature protection function according to claim 1, characterized in that: A heat dissipation fan (4) is fixedly mounted on the surface of the metal seat (2) on one side of the heat dissipation fin (3).

5. The automobile air-conditioning speed regulating device with over-temperature protection function according to claim 1, characterized in that: The alarm (10) is connected in series with the secondary safety resistor (8) in the circuit.

6. The automobile air-conditioning speed regulating device with over-temperature protection function according to claim 1, characterized in that: The temperature sensor provided inside the temperature controller (7) is connected to the temperature fuse (9).

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