Electrical safety protection device of ventilation and air conditioning system
By introducing smoke and temperature sensors and opening/closing mechanisms into the ventilation and air conditioning system, the air inlet and outlet are automatically controlled. Combined with filter components and filters, the problems of existing fire valves requiring manual reset and smoke easily passing through are solved, thus achieving safe protection and improved air quality.
Patent Information
- Application Number
- CN202520340356.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing fire dampers require manual reset and are difficult to close when the smoke temperature is low, which makes it easy for smoke and particulate matter to enter through the pipes and affect the air environment.
It uses smoke and temperature sensors to monitor air quality, automatically controls the opening and closing of the air inlet and outlet through an opening and closing mechanism, and is equipped with a filter assembly and filter screen to filter particulate matter. It also uses a motor to drive the baffle to move for convenient operation.
It achieves air environment safety protection, avoids manual reset operation, ensures effective valve closure at any temperature, and improves air quality.
Smart Images
Figure CN223840566U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of air conditioning system protection technology, specifically relating to electrical safety protection devices for ventilation and air conditioning systems. Background Technology
[0002] A ventilation and air conditioning system is a comprehensive system primarily used to regulate indoor air temperature, humidity, airflow speed, and cleanliness to provide a comfortable and healthy working or living environment. A ventilation and air conditioning system consists of two parts: a ventilation system and an air conditioning system.
[0003] To improve the safety of ventilation and air conditioning systems, protective devices are installed on the ducts to prevent the spread of smoke and fire. Existing protective devices, such as fire dampers, are temperature-controlled valves made of shape memory alloy. These valves close using gravity and a spring mechanism. When the temperature inside the duct rises, the shape memory metal melts, causing the valve to close via the spring mechanism, thus providing fire protection. However, these devices still have certain drawbacks in practical use. First, after the valve closes, it needs to be manually reset to open, which is inconvenient. Second, the valve requires the temperature in the smoke to reach a certain level for the shape memory metal to melt before it can close. When the temperature of the smoke in the air is low, the valve is difficult to close, and the mixture of smoke and particulate matter can easily enter through the duct, affecting the air quality. Utility Model Content
[0004] The purpose of this utility model is to provide an electrical safety protection device for ventilation and air conditioning systems, which facilitates flexible control of airflow according to air conditions, ensures air environment safety, avoids manual reset, and is easy to operate.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] An electrical safety protection device for a ventilation and air conditioning system includes: a mounting box, wherein an air inlet box and an air outlet box are fixedly installed inside the mounting box, ventilation components are provided on the air inlet box and the air outlet box, a smoke sensor and a temperature sensor are fixedly installed inside the air inlet box, a partition is provided between the air inlet box and the air outlet box, an air inlet and an air outlet are respectively provided at opposite ends of the air inlet box and the air outlet box, an air passage is formed between the partition and the air inlet and the air outlet, a filter component is provided in the air passage, and an opening and closing mechanism is provided on both the air inlet and the air outlet.
[0007] The opening and closing mechanism includes baffles, two baffles are slidably disposed on the inner side walls of the air inlet box and the air outlet box respectively, and a first sealing strip is fixedly disposed on one end of each of the two baffles. A second sealing strip adapted to the first sealing strip is fixedly disposed on the inner side walls of the air inlet box and the air outlet box. An adjustment component for adjusting the movement of the baffles is provided in the mounting box.
[0008] Preferably, the adjusting assembly includes a bidirectional lead screw, with both ends of the bidirectional lead screw passing through the air inlet box and the air outlet box respectively and rotatably connected to the inner sidewalls of the air inlet box and the air outlet box. Two adjusting plates are threaded onto the bidirectional lead screw, and the two adjusting plates are fixedly connected to two corresponding baffles. Guide rods are fixedly installed inside both the air inlet box and the air outlet box. The two adjusting plates are slidably sleeved on the two corresponding guide rods. The mounting box is provided with a control assembly for adjusting the rotation of the bidirectional lead screw.
[0009] Preferably, the control component includes a fixed plate fixedly disposed between the air inlet box and the air outlet box, a rotating rod being disposed through and rotatably disposed on the fixed plate, a first bevel gear being fixedly disposed at one end of the rotating rod near the end of the bidirectional lead screw, and a second bevel gear being fixedly sleeved on the bidirectional lead screw, the first bevel gear and the second bevel gear being meshed together.
[0010] Preferably, a motor is fixedly mounted on the mounting box, and the end of the rotating rod away from the first bevel gear passes through the mounting box and is fixedly connected to the output end of the motor.
[0011] Preferably, the ventilation assembly includes an air inlet pipe that passes through and is fixedly installed on the air inlet box, and an air outlet pipe that passes through and is fixedly installed on the air outlet box. The air inlet pipe and the air outlet pipe both pass through the mounting box and extend outward on the side away from the air inlet box and the air outlet box.
[0012] Preferably, the filter assembly includes a mounting plate, on which a mounting frame is fixedly disposed, and multiple fixing frames are fixedly disposed on the mounting plate, with an air filter element fixedly disposed within each fixing frame.
[0013] Preferably, the mounting box has a mounting opening that matches the mounting frame, the mounting frame is inserted into the air duct through the mounting opening, and ventilation openings are provided on both sides of the mounting frame near the air inlet and air outlet, with filters installed in the ventilation openings.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] (1) By setting and using smoke and temperature sensors, the air quality entering the air inlet box is monitored. At the same time, the opening and closing of the air inlet and outlet are controlled by the cooperation of the opening and closing mechanism. This avoids the need for manual reset after the valve is closed, making the operation more convenient. It also prevents the valve from being difficult to close when the temperature of the smoke in the air is low, thus preventing the gas mixed with smoke and particulate matter from entering through the pipeline and ensuring the safety of the air environment.
[0016] (2) By using the installation frame and filter screen, larger particles mixed in the air entering the airway are filtered, and by using the fixed frame and air filter element, the air is filtered again, thereby improving air quality and making it convenient to use. Attached Figure Description
[0017] Figure 1 This is a front view of the present invention;
[0018] Figure 2 This is a rear view of the present invention;
[0019] Figure 3 This is a cross-sectional view of the present invention;
[0020] Figure 4 This is a schematic diagram of the connection structure between the baffle and the first sealing strip in this utility model;
[0021] Figure 5 for Figure 3 Enlarged view of the structure at point A in the middle;
[0022] In the diagram: 1. Mounting box; 2. Air inlet box; 3. Air outlet box; 4. Smoke sensor; 5. Temperature sensor; 6. Partition plate; 7. Baffle plate; 8. First sealing strip; 9. Second sealing strip; 10. Two-way lead screw; 11. Adjusting plate; 12. Guide rod; 13. Fixing plate; 14. Rotating rod; 15. First bevel gear; 16. Second bevel gear; 17. Motor; 18. Air inlet pipe; 19. Air outlet pipe; 20. Mounting plate; 21. Mounting frame; 22. Fixing frame; 23. Air filter element; 24. Filter screen. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Example 1:
[0025] Please see Figures 1-5As shown, the electrical safety protection device for the ventilation and air conditioning system includes: a mounting box 1, an air inlet box 2 and an air outlet box 3 are fixedly installed inside the mounting box 1, ventilation components are provided on the air inlet box 2 and the air outlet box 3, a smoke sensor 4 and a temperature sensor 5 are fixedly installed inside the air inlet box 2, a partition 6 is provided between the air inlet box 2 and the air outlet box 3, an air inlet and an air outlet are respectively provided at opposite ends of the air inlet box 2 and the air outlet, an air passage is formed between the partition 6 and the air inlet and the air outlet, a filter component is provided in the air passage, and an opening and closing mechanism is provided on both the air inlet and the air outlet;
[0026] The opening and closing mechanism includes baffles 7. Two baffles 7 are slidably disposed on the inner side walls of the air inlet box 2 and the air outlet box 3, respectively. A first sealing strip 8 is fixedly disposed on one end of each of the two baffles 7. A second sealing strip 9 adapted to the first sealing strip 8 is fixedly disposed on the inner side walls of the air inlet box 2 and the air outlet box 3. An adjustment component for adjusting the movement of the baffles 7 is provided in the mounting box 1.
[0027] As can be seen from the above, air enters the air inlet box 2 through the ventilation assembly. The smoke concentration and temperature in the air are monitored by the smoke sensor 4 and the temperature sensor 5. The smoke sensor 4 and the temperature sensor 5 are existing technologies and will not be described in detail here. When the smoke concentration or temperature in the air reaches the point where it is necessary to cut off the air flow, the smoke sensor 4 and the temperature sensor 5 release a signal to the opening and closing mechanism, causing the opening and closing mechanism to close, thereby achieving the protective effect of fire prevention and smoke prevention.
[0028] The baffle 7 is moved by adjusting the component. When the baffle 7 is close to the air inlet and air outlet, the first sealing strip 8 and the second sealing strip 9 are pressed together, so that the air inlet and air outlet are closed. When the baffle 7 is away from the air inlet and air outlet, the first sealing strip 8 and the second sealing strip 9 are separated, so that the air inlet and air outlet are opened. The first sealing strip 8 and the second sealing strip 9 are both made of high temperature resistant polymer rubber material.
[0029] Specifically, regarding the aforementioned adjustment components, please refer to... Figure 3 and Figure 5 As shown, the adjustment assembly includes a bidirectional lead screw 10, with both ends of the bidirectional lead screw 10 passing through the air inlet box 2 and the air outlet box 3 respectively, and rotatably connected to the inner sidewalls of the air inlet box 2 and the air outlet box 3. Two adjusting plates 11 are threadedly connected to the bidirectional lead screw 10, and the two adjusting plates 11 are fixedly connected to the corresponding two baffles 7 respectively. Guide rods 12 are fixedly installed inside the air inlet box 2 and the air outlet box 3. The two adjusting plates 11 are slidably sleeved on the corresponding two guide rods 12 respectively. The mounting box 1 is provided with a control assembly for adjusting the rotation of the bidirectional lead screw 10.
[0030] The control assembly includes a fixed plate 13 fixedly disposed between the air inlet box 2 and the air outlet box 3. A rotating rod 14 is rotatably disposed through the fixed plate 13. A first bevel gear 15 is fixedly disposed at one end of the rotating rod 14 near the end of the bidirectional lead screw 10. A second bevel gear 16 is fixedly sleeved on the bidirectional lead screw 10. The first bevel gear 15 and the second bevel gear 16 are meshed and connected.
[0031] A motor 17 is fixedly mounted on the mounting box 1. The end of the rotating rod 14 away from the first bevel gear 15 passes through the mounting box 1 and is fixedly connected to the output end of the motor 17.
[0032] As can be seen from the above, the smoke sensor 4 and the temperature sensor 5 output signals to control the motor 17 to start rotating in the forward direction. The motor 17 drives the rotating rod 14 and the first bevel gear 15 to rotate. The first bevel gear 15 drives the double-acting screw 10 to rotate through the second bevel gear 16. The double-acting screw 10 drives the two adjusting plates 11 to move in opposite directions, thereby causing the two baffles 7 to move in opposite directions, so that the two baffles 7 fit with the air inlet and the air outlet, so that the first sealing strip 8 and the second sealing strip 9 are pressed together, thereby closing the air inlet and the air outlet.
[0033] When the air inlet and outlet need to be opened, the control motor 17 reverses, causing the two baffles 7 to move in opposite directions, separating the first sealing strip 8 and the second sealing strip 9, thus opening the air inlet and outlet. The operation is convenient. The motor 17 is a servo motor, which is existing technology and will not be described in detail here.
[0034] Specifically, regarding the aforementioned ventilation components, please refer to... Figure 1 , Figure 2 and Figure 3 As shown, the ventilation assembly includes an air inlet pipe 18 that passes through and is fixedly installed on the air inlet box 2, and an air outlet pipe 19 that passes through and is fixedly installed on the air outlet box 3. The air inlet pipe 18 and the air outlet pipe 19 both pass through the mounting box 1 and extend outward on the side away from the air inlet box 2 and the air outlet box 3.
[0035] As can be seen from the above, the use of the ventilation components allows air to enter the air inlet box 2, making it convenient to detect the incoming air.
[0036] Example 2:
[0037] refer to Figure 3 and Figure 5 As shown, the filter assembly includes a mounting plate 20, a mounting frame 21 fixedly mounted on the mounting plate 20, and multiple fixing frames 22 fixedly mounted on the mounting plate 20. An air filter element 23 is fixedly mounted inside the fixing frame 22.
[0038] As can be seen from the above, the use of multiple air filter elements 23 facilitates the filtration of tiny particles in the air, thereby improving air quality. The mounting plate 20 and the mounting box 1 are fixed together by multiple fixing bolts, which facilitates the installation and removal of the mounting plate 20 and makes it convenient to clean and replace the air filter elements 23.
[0039] Preferably, the mounting box 1 has a mounting opening that matches the mounting frame 21. The mounting frame 21 is inserted into the air duct through the mounting opening. Ventilation openings are provided on both sides of the mounting frame 21 near the air inlet and air outlet, and a filter screen 24 is installed in the ventilation opening.
[0040] As can be seen from the above, the ventilation openings facilitate the flow of air into the mounting frame 21, while the filter 24 facilitates the filtration of larger particulate impurities in the air.
[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An electrical safety protection device for a ventilation and air conditioning system, characterized in that, include: The installation box (1) is equipped with an air inlet box (2) and an air outlet box (3) inside the installation box (1). Ventilation components are provided on the air inlet box (2) and the air outlet box (3). A smoke sensor (4) and a temperature sensor (5) are fixedly installed inside the air inlet box (2). A partition (6) is provided between the air inlet box (2) and the air outlet box (3). An air inlet and an air outlet are respectively provided at opposite ends of the air inlet box (2) and the air outlet box (3). An air passage is formed between the partition (6) and the air inlet and the air outlet. A filter component is provided in the air passage. An opening and closing mechanism is provided on both the air inlet and the air outlet. The opening and closing mechanism includes baffles (7), and two baffles (7) are slidably disposed on the inner side walls of the air inlet box (2) and the air outlet box (3), respectively. A first sealing strip (8) is fixedly disposed on one end of each of the two baffles (7), and a second sealing strip (9) adapted to the first sealing strip (8) is fixedly disposed on the inner side walls of the air inlet box (2) and the air outlet box (3). An adjustment component for adjusting the movement of the baffles (7) is provided in the mounting box (1).
2. The electrical safety protection device for the ventilation and air conditioning system according to claim 1, characterized in that: The adjustment assembly includes a bidirectional lead screw (10), with both ends of the bidirectional lead screw (10) passing through the air inlet box (2) and the air outlet box (3) respectively and rotatably connected to the inner sidewalls of the air inlet box (2) and the air outlet box (3). Two adjustment plates (11) are threadedly connected to the bidirectional lead screw (10), and the two adjustment plates (11) are fixedly connected to the corresponding two baffles (7). Guide rods (12) are fixedly installed inside the air inlet box (2) and the air outlet box (3). The two adjustment plates (11) are slidably sleeved on the corresponding two guide rods (12). The mounting box (1) is provided with a control assembly for adjusting the rotation of the bidirectional lead screw (10).
3. The electrical safety protection device for the ventilation and air conditioning system according to claim 2, characterized in that: The control assembly includes a fixed plate (13) fixedly disposed between the air inlet box (2) and the air outlet box (3). A rotating rod (14) is rotatably disposed through the fixed plate (13). A first bevel gear (15) is fixedly disposed at one end of the rotating rod (14) near the bidirectional lead screw (10). A second bevel gear (16) is fixedly sleeved on the bidirectional lead screw (10). The first bevel gear (15) and the second bevel gear (16) are meshed together.
4. The electrical safety protection device for the ventilation and air conditioning system according to claim 3, characterized in that: A motor (17) is fixedly installed on the mounting box (1). The end of the rotating rod (14) away from the first bevel gear (15) passes through the mounting box (1) and is fixedly connected to the output end of the motor (17).
5. The electrical safety protection device for the ventilation and air conditioning system according to claim 1, characterized in that: The ventilation assembly includes an air inlet pipe (18) that passes through and is fixedly installed on the air inlet box (2), and an air outlet pipe (19) that passes through and is fixedly installed on the air outlet box (3). The air inlet pipe (18) and the air outlet pipe (19) both pass through the mounting box (1) and extend outward on the side away from the air inlet box (2) and the air outlet box (3).
6. The electrical safety protection device for the ventilation and air conditioning system according to claim 1, characterized in that: The filter assembly includes a mounting plate (20), on which a mounting frame (21) is fixedly disposed, and multiple fixing frames (22) are fixedly disposed on the mounting plate (20), and an air filter element (23) is fixedly disposed inside the fixing frame (22).
7. The electrical safety protection device for a ventilation and air conditioning system according to claim 6, characterized in that: The mounting box (1) has an installation opening that matches the mounting frame (21). The mounting frame (21) is inserted into the air duct through the installation opening. Ventilation openings are provided on both sides of the mounting frame (21) near the air inlet and air outlet. A filter screen (24) is provided in the ventilation opening.