An intelligent respirator with IP67 waterproof function

Abstract

The present invention discloses an intelligent respirator with IP67 waterproof function, wherein a ventilation port is opened on the side of an outer cover, and a ventilation door is provided on the ventilation port, and one side of the ventilation door is fixed to the side of the ventilation port by a spring pin and a door hinge structure, and the spring pin is used to control the ventilation door to automatically reset and close when no force is applied; an electromagnet push rod is provided on the inner side of the ventilation port, and the electromagnet push rod can push the ventilation door to open when it is energized and pushed out; two waterproof contacts are provided at the inner port of the ventilation port, and the two waterproof contacts are short-circuited when encountering water; a switchable ventilation door is installed on the respirator, and the ventilation door is automatically controlled to open when the fan is started, and automatically controlled to close when the fan is turned off, and the fan is automatically controlled to close and the ventilation door is closed when water enters the door.

Description

Technical Field

[0001] The present invention relates to an intelligent respirator, in particular to an intelligent respirator with IP67 waterproof function. Background Art

[0002] As electric vehicles become increasingly popular, users are also experiencing some issues. The temperature of an electric vehicle's motor control box can rise by around 80 degrees Celsius while the vehicle is in motion. Because the control box is sealed to ensure waterproofing, the high-temperature, high-pressure air inside can explode. Furthermore, the temperature difference between the inside and outside of the box can cause condensation on the inner walls, potentially causing electrical short circuits or fires.

[0003] The current solution to this problem is to install an intelligent respirator on the wall of the control cabinet to replace the general breather valve. Although this solves the condensation problem, the respirator needs to perform heat exchange between the inside and outside of the control box to prevent condensation. Since general breathable and waterproof breathable membranes can only balance pressure differences but not temperature differences, in order to perform heat exchange between the inside and outside of the control box, breathable membranes cannot be used for waterproofing, and other methods must be used for waterproofing. Summary of the Invention

[0004] In response to the problems existing in the prior art, the present invention provides an intelligent respirator with IP67 waterproof function. A switchable ventilation door is installed on the respirator. The ventilation door is automatically controlled to open when the fan is started and automatically controlled to close when the fan is turned off. When water enters the door, the fan is automatically controlled to close the ventilation door.

[0005] The technical solution of the present invention is: an intelligent respirator with IP67 waterproof function, comprising an outer cover with a bottom opening and a body capable of extending into a motor control box, wherein the top surface of the body is fixedly connected to the bottom opening of the outer cover, a control circuit board and a fan are arranged in the outer cover, an internal temperature sensor is arranged on the control circuit board, and an external temperature sensor is arranged on the outer surface of the outer cover;

[0006] A ventilation hole is provided on the side of the outer cover, and a ventilation door is provided on the ventilation hole. One side of the ventilation door is fixed to the side of the ventilation hole by a spring pin and a door hinge structure. The spring pin is used to control the ventilation door to automatically return to close when no force is applied;

[0007] An electromagnet push rod is provided inside the vent, and when the electromagnet push rod is energized and pushed out, it can push the vent door to open;

[0008] Two waterproof contacts are provided at the inner side port of the vent, and the two waterproof contacts are short-circuited when encountering water.

[0009] Furthermore, a door push-pull connection plate is provided on the inner side of the ventilation door, and the door push-pull connection plate is rotatably fixedly connected to the push rod end of the electromagnetic push rod. When the electromagnetic push rod is energized, the push rod is pushed outward, pushing the ventilation door open. When the electromagnetic push rod is de-energized, it drives the ventilation door to retract and return to its original position. Simultaneously, the spring pin of the ventilation door also automatically drives the ventilation door to return to its original position, thereby ensuring the airtightness of the ventilation door.

[0010] Furthermore, the inner surface of the ventilation door has convex ridges around it and a concave structure in the middle. A door sealing frame structure is provided around the ventilation opening. When the ventilation door is closed, the convex ridges around the ventilation door tightly contact the outer surface of the outer cover outside the door sealing frame structure, and the door sealing frame structure presses and seals with the concave structure surface in the middle of the ventilation door. Double sealing ensures airtightness.

[0011] Furthermore, the control circuit board and the fan are fixed to the inner top surface of the outer cover after being connected by screws.

[0012] Furthermore, one end of the body is inserted into the motor control box and fixed by a nut, and a sealing gasket is provided on the fixing surface.

[0013] The beneficial effects of the present invention are as follows: when the respirator is in a non-working state, the ventilation door is closed, and at this time, the various sealing components of the respirator play the role of IP67 waterproofing; when the internal and external sensors of the respirator sense the preset humidity and the internal and external temperature difference, the respirator needs to work to avoid condensation. At this time, the electromagnet push rod is controlled to push open the ventilation door, and the fan is started to work to perform internal and external heat exchange, so as to quickly eliminate the temperature difference between the inside and outside of the control box, thereby solving the problem of difficult heat exchange inside and outside the control box.

[0014] When the control box is accidentally flooded, the two waterproof contacts first touch the water, causing a short circuit and stopping the fan. The solenoid push rod is then de-energized, and the ventilation door is reset and closed by the spring pin, restoring the IP67 waterproof function of the respirator. This solves the contradiction between the respirator's need for heat exchange and IP67 waterproof function.

[0015] At the same time, the use of an electromagnetic push rod to operate the ventilation door greatly saves space, allowing the respirator to close and open the damper in a very small structural space, which not only reduces costs but also solves the problem of being unable to install the smart respirator due to limited space outside the control box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 An exploded view of the smart respirator with IP67 waterproof function;

[0017] Figure 2 Schematic diagram of the partially opened vent of the smart respirator with IP67 waterproof function.

[0018] In the figure: 1 is a nut, 2 is a sealing gasket, 3 is a body, 4 is an electromagnet push rod, 5 is a spring pin, 6 is an outer cover, 7 is a ventilation door, 8 is an internal temperature sensor, 9 is a control circuit board, 10 is a fan, 11 is a door push-pull connecting plate, 12 is a recessed structure, 13 is a door hinge structure, 14 is a waterproof contact, 15 is an external temperature sensor, and 16 is a door sealing frame structure. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figure 1 、 2 As shown, an intelligent respirator with IP67 waterproofing includes an outer cover 6 with a bottom opening and a body 3 that can be inserted into the motor control box. One end of the body 3 is inserted into the motor control box and secured with a nut 1. A sealing gasket 2 is provided on the securing surface. The top surface of the body 3 is fixedly connected to the bottom opening of the outer cover 6. The outer cover 6 contains a control circuit board 9 and a fan 10, which are screwed together and fixed to the top surface of the outer cover 6. The control circuit board 9 is equipped with an internal temperature sensor 8, and the outer surface of the outer cover 6 is provided with an external temperature sensor 15.

[0021] A ventilation hole is provided on the side of the outer cover 6, and a ventilation door 7 is provided on the ventilation hole. One side of the ventilation door 7 is fixed to the side of the ventilation hole by a spring pin 5 and a door hinge structure 13. The spring pin 5 is used to control the ventilation door to automatically reset and close when no force is applied.

[0022] An electromagnet push rod 4 is located inside the ventilation opening. When energized, the electromagnet push rod 4 pushes the ventilation door 7 open. Specifically, a door push-pull connection plate 11 is located inside the ventilation door 7 and is rotatably fixedly connected to the push rod end of the electromagnet push rod 4. When the electromagnet push rod is energized, it pushes outward, pushing the ventilation door open. When the electromagnet push rod is de-energized, it retracts the ventilation door, and its spring pin automatically retracts and closes, ensuring the airtightness of the ventilation door.

[0023] Two waterproof contacts 14 are provided at the inner side of the vent, and the two waterproof contacts 14 are short-circuited when exposed to water.

[0024] To ensure airtightness, the inner surface of the ventilation door 7 has raised ridges around it and a recessed structure 12 in the middle. A door sealing frame structure 16 is provided around the ventilation opening. When the ventilation door 7 is closed, the raised ridges around the ventilation door press into contact with the outer surface of the outer cover outside the door sealing frame structure, and the door sealing frame presses and seals against the recessed structure surface in the middle of the ventilation door.

[0025] When the respirator is in non-working state, the ventilation door is closed, and the seals of the respirator play the role of IP67 waterproof. When the temperature sensors inside and outside the respirator sense the preset humidity and the temperature difference between the inside and outside, the respirator needs to work to avoid condensation. At this time, the control electromagnet push rod pushes open the ventilation door, and the fan is started to work for internal and external heat exchange, so as to quickly eliminate the temperature difference between the inside and outside of the control box, solving the problem of difficult heat exchange inside and outside the control box.

[0026] When the control box is accidentally flooded, the two waterproof contacts first touch the water, causing a short circuit and stopping the fan. The solenoid push rod is then de-energized, and the ventilation door is reset and closed by the spring pin, restoring the IP67 waterproof function of the respirator. This solves the contradiction between the respirator's need for heat exchange and IP67 waterproof function.

[0027] At the same time, the use of an electromagnetic push rod to operate the ventilation door greatly saves space, allowing the respirator to close and open the damper in a very small structural space, which not only reduces costs but also solves the problem of being unable to install the smart respirator due to limited space outside the control box.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An intelligent respirator with IP67 waterproof function, comprising an outer cover (6) with a bottom opening and a body (3) capable of extending into a motor control box, wherein the top surface of the body (3) is fixedly connected to the bottom opening of the outer cover (6), a control circuit board (9) and a fan (10) are arranged in the outer cover (6), an internal temperature sensor (8) is arranged on the control circuit board (9), and an external temperature sensor (15) is arranged on the outer surface of the outer cover (6); Its characteristics are: A ventilation opening is provided on the side of the outer cover (6), and a ventilation door (7) is provided on the ventilation opening. One side of the ventilation door (7) is fixed to the side of the ventilation opening by a spring pin (5) and a door hinge structure (13). The spring pin (5) is used to control the ventilation door to automatically return to its original position and close when no force is applied. An electromagnet push rod (4) is provided on the inner side of the vent, and when the electromagnet push rod (4) is energized and pushed out, it can push the vent door (7) to open; When the respirator is not in operation, the ventilation door is closed, and the seals of the respirator play the role of IP67 waterproof. When the internal and external sensors of the respirator sense the preset humidity and the temperature difference between the inside and outside, the respirator needs to work to avoid condensation. At this time, the electromagnetic push rod is controlled to push open the ventilation door, and the fan is started to work for internal and external heat exchange. Two waterproof contacts (14) are provided at the inner side of the vent, and the two waterproof contacts (14) are short-circuited when exposed to water; When the control box is accidentally flooded, the two waterproof contacts touch the water first, causing a short circuit between them and stopping the fan. The electromagnet push rod is powered off, and the ventilation door is reset and closed by the spring pin, restoring the IP67 waterproof function of the respirator. The inner surface of the ventilation door (7) is convex around and has a concave structure (12) in the middle; a door sealing frame structure (16) is provided around the ventilation opening. When the ventilation door (7) is closed, the convex parts around the ventilation door are pressed and contacted with the outer surface of the outer cover outside the door sealing frame structure, and the door sealing frame structure is pressed and sealed with the concave structure surface in the middle of the ventilation door.

2. The intelligent respirator with IP67 waterproof function according to claim 1, characterized in that: A door push-pull connecting plate (11) is provided on the inner side of the ventilation door (7), and the door push-pull connecting plate (11) is rotatably fixedly connected to the push rod end of the electromagnet push rod (4).

3. The intelligent respirator with IP67 waterproof function according to claim 1, characterized in that: The control circuit board (9) and the fan (10) are fixedly connected by screws and then fixed to the inner top surface of the outer cover (6).

4. The intelligent respirator with IP67 waterproof function according to claim 1, characterized in that: One end of the body (3) is inserted into the motor control box and fixed by a nut (1), and a sealing gasket (2) is provided on the fixing surface.

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