Micro-positive pressure ventilation fresh air pre-warming device

Abstract

The utility model relates to preheating device technical field, and disclose a kind of micro-positive pressure ventilation fresh air preheating device, including first pipe body, second pipe body, air inlet filter heating mechanism, clamping fixing mechanism.Using this structure, the fresh air of the device can be heated and preheated to the new air pipe, so that the new air into the room improves comfort, and reduces the load of original heating system, and the preheated and filtered fresh air can avoid condensation and mold growth in the pipe wall;It can be stably clamped from the air inlet filter heating mechanism two ends by clamping fixing mechanism, so as to realize the installation and fixation of air inlet filter heating mechanism, and the structure is convenient for disassembling and assembling air inlet filter heating mechanism;At the same time, the two ends clamping mode can be adapted to different thickness specifications of air inlet filter heating mechanism, with strong versatility.

Description

Technical Field

[0001] This utility model relates to the technical field of preheating devices, specifically a micro-positive pressure ventilation fresh air preheating device. Background Technology

[0002] During the winter heating season, building ventilation systems need to introduce outdoor fresh air to ensure indoor air quality. However, the temperature of outdoor fresh air is extremely low. If it is directly introduced into the room, it will cause a sharp drop in indoor temperature, increasing the load on the heating system. At the same time, the low-temperature fresh air is prone to condensation when it comes into contact with the inner wall of the duct, which will cause duct corrosion and mold growth in the long run, affecting the lifespan of the system and indoor health. Utility Model Content

[0003] This utility model mainly provides a micro-positive pressure ventilation fresh air preheating device to solve the problems of existing fresh air systems directly introducing fresh air, which can cause a sudden drop in indoor temperature, increase the load on the heating system, and cause mold growth when the low-temperature fresh air comes into contact with the inner wall of the duct.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A micro-positive pressure ventilation fresh air preheating device includes a first pipe and a second pipe. An air inlet filtration and heating mechanism is disposed between the first and second pipes. Clamping and fixing mechanisms for holding and fixing the air inlet filtration and heating mechanism are provided on the first and second pipes. Specifically, flanges can be provided at the outer ends of the first and second pipes for connection to a fresh air duct via flange connections. In use, the clamping and fixing mechanisms clamp the air inlet filtration and heating mechanism from both ends, and then the air inlet filtration and heating mechanism filters and preheats the fresh air. This structure allows for the preheating of incoming fresh air into the duct, improving indoor comfort and reducing the load on the heating system. The preheated and filtered air also prevents condensation and mold growth on the duct walls. The clamping mechanism securely holds the inlet air filter heating unit from both ends, facilitating its installation and disassembly. Furthermore, the clamping method allows for compatibility with inlet air filter heating units of varying thicknesses, offering strong versatility.

[0006] Furthermore, the air intake filtration and heating mechanism includes a mounting frame. A filter screen is detachably connected to the outer side of the mounting frame, and an electric heating component is provided on the inner side of the mounting frame. The front and rear sides of the mounting frame are fixed by the clamping and fixing mechanism. Specifically, the filter screen can be detachably connected to the mounting frame by bolts, snap-fit, or other methods. In use, as fresh air flows from the outside of the mounting frame, it first passes through the filter screen, then is preheated by the electric heating component, and finally enters the fresh air duct from the other end of the pipe. During this process, when the filter screen needs to be replaced, it can be removed and installed on the mounting frame. With this structure, the fresh air entering the duct is first filtered by the filter screen and then preheated by the electric heating component, which can effectively prevent dust from adhering to the surface of the heating component and affecting the heating efficiency, ensuring the stability of the preheating effect. Moreover, the filter screen and the mounting frame are detachably connected, allowing the filter screen to be removed and installed independently, reducing maintenance difficulty.

[0007] Furthermore, the electric heating assembly includes an annular high-temperature resistant insulating substrate and a clamp for holding the annular high-temperature resistant insulating substrate. An annular heat-insulating gasket is provided between the clamp and the annular high-temperature resistant insulating substrate. A heating wire is wound on the annular high-temperature resistant insulating substrate. A through groove is formed on the clamp, and a ceramic guide tube is placed in the through groove. The wiring terminals of the heating wire pass through the ceramic guide tube. A connecting seat is provided on the outside of the clamp, and the connecting seat is detachably connected to the mounting bracket by bolts. An external connection groove is formed on the mounting bracket corresponding to the mounting groove. Specifically, the annular high-temperature resistant insulating substrate can be an alumina ceramic substrate, a mica substrate, etc. The heating wire can be a nickel-chromium alloy wire, an iron-chromium-aluminum alloy wire, etc., and the contact surface between the heating wire and the substrate is coated with a high-temperature resistant insulating varnish, such as silicone varnish. The ceramic guide tube can be made of alumina ceramic, mainly to facilitate the passage of the wiring terminals of the heating wire. The annular heat-insulating gasket can be made of mica sheet or aerogel felt. In use, the annular high-temperature resistant insulating substrate is clamped and fixed using a clamp, and then the clamp is detached and reattached to the mounting bracket using a screw. The wiring terminals pass through the ceramic guide tube and then exit through the external slot to connect to the external power supply point. This structure, with its annular heat-insulating gasket, blocks the conduction of heat generated by the heating wire to the clamp and mounting bracket, reducing heat loss and preventing the mounting bracket from deforming due to overheating. Furthermore, the ceramic guide tube allows the wiring terminals to pass through safely, and the insulating properties of the ceramic prevent the terminals from conducting to the metal clamp. Simultaneously, the detachable connection between the clamp and the mounting bracket allows the electric heating component to be disassembled and maintained independently, eliminating the need to replace the entire air intake filter heating mechanism and reducing maintenance costs.

[0008] Furthermore, the clamping and fixing mechanism includes a screw rod disposed on the outside of the first and second tube bodies, and multiple guide rods disposed on the outside of the first and second tube bodies. A first annular clamping block is threadedly connected to the screw rod located at the inner end of the first tube body, and a second annular clamping block is threadedly connected to the screw rod located at the inner end of the second tube body. Both the first and second annular clamping blocks are slidably connected to the guide rods. A first telescopic tube is disposed between the first annular clamping block and the first tube body, and a second telescopic tube is disposed between the second annular clamping block and the second tube body. A motor for driving the screw rod to rotate is disposed on the first or second tube body. Specifically, the axial directions of the guide rods and the screw rod are parallel. In use, the screw rod can be driven to rotate by the motor, thereby causing the first and second annular clamping blocks threadedly connected to the screw rod to slide on the guide rods. During the displacement of the first and second annular clamping blocks, the first and second telescopic tubes can be extended and retracted, thereby preventing air leakage. Finally, the mounting bracket is clamped or released by the moved first and second annular clamping blocks. This structure, driven by an electric motor to rotate the screw, enables relatively rapid movement of the first and second annular clamping blocks, improving the assembly and disassembly efficiency of the air intake filter heating mechanism compared to manual operation. Furthermore, the guide rod ensures the stability of the sliding motion of the first and second annular clamping blocks, preventing clamping deviation. Simultaneously, the first and second telescopic tubes extend and retract synchronously with the clamping blocks, sealing the gap between the tubes and the clamping blocks to prevent fresh air leakage and ensure the stability of the slightly positive pressure ventilation environment.

[0009] Furthermore, protective shells are provided on the outer sides of the first and second pipe bodies, with an installation port at the lower end of the protective shell. An installation plate for sealing the installation port is provided at the lower end of the mounting bracket. In use, the mounting bracket can be inserted upwards through the installation port, and the installation port can be sealed by the installation plate. With this structure, the protective shells effectively protect the clamping and fixing mechanisms such as screws and guide rods on the outer sides of the first and second pipe bodies, extending the service life of the device. The installation port provides a channel for the disassembly and assembly of the air intake filtration and heating mechanism, and, in conjunction with the sealing effect of the installation plate, prevents external debris from entering the duct through the installation port, ensuring the cleanliness of the fresh air and overall airtightness.

[0010] Beneficial effects: This device can heat and preheat the fresh air entering the fresh air duct, thereby improving the comfort of the fresh air entering the room and reducing the load on the original heating system. The preheated and filtered fresh air can also prevent condensation and mold growth on the inner wall of the duct. The clamping and fixing mechanism can stably clamp the air intake filter heating mechanism from both ends, thereby realizing the installation and fixing of the air intake filter heating mechanism. This structure is also convenient for disassembling and assembling the air intake filter heating mechanism. At the same time, the clamping method at both ends can be adapted to air intake filter heating mechanisms of different thicknesses, which has strong versatility. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the first tube body in this embodiment;

[0012] Figure 2 This is a schematic diagram of the air intake filtration and heating mechanism in this embodiment;

[0013] Figure 3 This is a rear-view schematic diagram of the air intake filtration and heating mechanism in this embodiment;

[0014] Figure 4 This is a schematic diagram of the air intake filtration and heating mechanism clamping in this embodiment;

[0015] Figure 5 This is a schematic cross-sectional view of the mounting shell in this embodiment.

[0016] Reference numerals: First tube body 1, Second tube body 2, Clamping and fixing mechanism 3, Screw 301, Guide rod 302, First annular clamping block 303, Second annular clamping block 304, First telescopic tube 305, Second telescopic tube 306, Motor 307, Mounting bracket 4, Filter screen 5, Electric heating assembly 6, Annular high-temperature resistant insulating substrate 601, Clamp 602, Heating wire 603, Terminal block 604, Connecting seat 605, Protective shell 7, Mounting plate 8. Detailed Implementation

[0017] The following will provide a more detailed description of the technical solution of a micro-positive pressure ventilation fresh air preheating device related to this utility model, with reference to the embodiments.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, a micro-positive pressure ventilation fresh air preheating device according to this embodiment includes a first pipe body 1 and a second pipe body 2. An air inlet filter heating mechanism is disposed between the first pipe body 1 and the second pipe body 2. A clamping and fixing mechanism 3 for clamping and fixing the air inlet filter heating mechanism is disposed on the first pipe body 1 and the second pipe body 2. Specifically, flanges can be provided at the outer ends of the first pipe body 1 and the second pipe body 2, and they can be connected to the fresh air duct through flange connection. The air inlet filter heating mechanism includes a mounting frame 4. A filter screen 5 is detachably connected to the outer side of the mounting frame 4, and an electric heating component 6 is disposed on the inner side of the mounting frame 4. The front and rear sides of the mounting frame 4 are fixed by the clamping and fixing mechanism 3. The electric heating assembly 6 includes an annular high-temperature resistant insulating substrate 601 and a clamp 602 for holding the annular high-temperature resistant insulating substrate 601. An annular heat-insulating gasket is provided between the clamp 602 and the annular high-temperature resistant insulating substrate 601. A heating wire 603 is wound on the annular high-temperature resistant insulating substrate 601. A through groove is provided on the clamp 602, and a ceramic guide tube is provided in the through groove. The wiring terminal 604 of the heating wire 603 passes through the ceramic guide tube. A connecting seat 605 is provided on the outside of the clamp 602. The connecting seat 605 is detachably connected to the mounting bracket 4 by bolts. An external groove is provided on the mounting bracket 4 corresponding to the mounting groove. The clamping and fixing mechanism 3 includes a screw 301 disposed on the outside of the first tube 1 and the second tube 2, and multiple guide rods 302 disposed on the outside of the first tube 1 and the second tube 2. A first annular clamping block 303 is threadedly connected to the screw 301 located at the inner end of the first tube 1, and a second annular clamping block 304 is threadedly connected to the screw 301 located at the inner end of the second tube 2. Both the first annular clamping block 303 and the second annular clamping block 304 are slidably connected to the guide rods 302. A first telescopic tube 305 is disposed between the first annular clamping block 303 and the first tube 1, and a second telescopic tube 306 is disposed between the second annular clamping block 304 and the second tube 2. A motor 307 for driving the screw 301 to rotate is disposed on the first tube 1 or the second tube 2. A protective shell 7 is disposed on the outside of the first tube 1 and the second tube 2. An installation port is opened at the lower end of the protective shell 7, and an installation plate 8 for closing the installation port is disposed at the lower end of the mounting bracket 4. In use, the mounting bracket 4 can be inserted upwards from the mounting port, and the mounting port can be closed by the mounting plate 8. In use, the air inlet filter heating mechanism is clamped from both ends by the clamping and fixing mechanism 3, and then the fresh air is filtered by the filter screen 5 of the air inlet filter heating mechanism and heated by the electric heating component 6 to achieve fresh air preheating.This structure allows for the preheating of incoming fresh air into the duct, thereby improving indoor comfort and reducing the load on the heating system. The preheated and filtered fresh air also prevents condensation and mold growth on the duct walls. The clamping and fixing mechanism 3 securely holds the air intake filter heating mechanism from both ends, facilitating its installation and disassembly. Furthermore, the clamping method at both ends is adaptable to air intake filter heating mechanisms of varying thicknesses, offering strong versatility.

[0020] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge or conventional technology in the field. Therefore, this utility model will not explain the control method and circuit connection in detail.

[0021] 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. A micro-positive pressure ventilation fresh air preheating device, characterized in that: It includes a first tube and a second tube, with an air inlet filter heating mechanism disposed between the first tube and the second tube, and clamping and fixing mechanisms for clamping and fixing the air inlet filter heating mechanism disposed on the first tube and the second tube.

2. The micro-positive pressure ventilation fresh air preheating device according to claim 1, characterized in that: The air intake filtration and heating mechanism includes a mounting frame, with a filter screen detachably connected to the outer side of the mounting frame and an electric heating component provided on the inner side of the mounting frame; the front and rear sides of the mounting frame are fixed by the clamping and fixing mechanism.

3. The micro-positive pressure ventilation fresh air preheating device according to claim 2, characterized in that: The electric heating assembly includes an annular high-temperature resistant insulating substrate and a clamp for holding the annular high-temperature resistant insulating substrate. An annular heat-insulating gasket is provided between the clamp and the annular high-temperature resistant insulating substrate. A heating wire is wound on the annular high-temperature resistant insulating substrate. A through groove is provided on the clamp, and a ceramic guide tube is provided in the through groove. The wiring terminals of the heating wire pass through the ceramic guide tube. A connecting seat is provided on the outside of the clamp, and the connecting seat is detachably connected to the mounting bracket by bolts. An external connection groove is provided on the mounting bracket corresponding to the mounting groove.

4. The micro-positive pressure ventilation fresh air preheating device according to claim 2, characterized in that: The clamping and fixing mechanism includes a screw rod disposed on the outside of the first tube and the second tube, and multiple guide rods disposed on the outside of the first tube and the second tube. A first annular clamping block is threadedly connected to the screw rod located at the inner end of the first tube, and a second annular clamping block is threadedly connected to the screw rod located at the inner end of the second tube. Both the first annular clamping block and the second annular clamping block are slidably connected to the guide rods. A first telescopic tube is disposed between the first annular clamping block and the first tube, and a second telescopic tube is disposed between the second annular clamping block and the second tube. An electric motor for driving the screw rod to rotate is disposed on the first tube or the second tube.

5. The micro-positive pressure ventilation fresh air preheating device according to claim 4, characterized in that: The first and second tubes are provided with protective shells on their outer sides. The lower end of the protective shells is provided with an installation port, and the lower end of the mounting bracket is provided with a mounting plate for closing the installation port.

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