Thermal insulation ventilated duct

Abstract

This utility model discloses an insulated ventilation duct, including a square tube body and an insulation pad fitted onto the surface of the square tube body. A vertically movable base strip is provided above the square tube body, and a pressure strip is fixedly connected to the bottom of the base strip. The pressure strip is pressed against the junction of the two ends of the insulation pad. Both ends of the square tube body are fixedly connected to a connecting frame, and the two ends of the base strip can be detachably and fixedly installed with the connecting frames. In this utility model, the insulation pad is wrapped around the surface of the square tube body, a screw is passed through the positioning hole, and then the base strip is pressed down from above, causing the pressure strip to press against the junction of the two ends of the insulation pad. A nut is then screwed onto the end of the screw to lock the base strip, thus fixing the insulation pad. When disassembly is required, the operation is the reverse of the above process, facilitating the separation of the insulation pad from the square tube body without the need for cutting with a utility knife or scraping adhesive; the operation can be completed by a single person.

Description

Technical Field

[0001] This utility model relates to the field of ventilation duct technology, specifically to an insulated ventilation duct. Background Technology

[0002] Air conditioning and ventilation ducts are networks of pipes used in air conditioning and ventilation systems to transport air or fluids. They are widely used in various places such as buildings, industrial facilities, and vehicles to regulate indoor temperature, humidity, and air quality, providing a comfortable indoor environment. In cooling and heating systems, the stability of duct temperature is crucial for the normal operation of the system.

[0003] Flexible insulation layers are typically bonded to the surface of pipes. The core issue in securing this bonding is achieving a strong adhesion between the insulation layer and the pipe surface. The insulation layer adheres completely to the pipe using specialized insulation adhesives (such as rubber and plastic adhesives or all-purpose adhesives). There are no pre-drilled openings or clips for disassembly; it must be forcibly peeled off from the edges. This is especially problematic for large-diameter or curved pipes, where it is difficult for a single person to exert force and requires the cooperation of multiple people. If residual adhesive is not cleaned properly during disassembly, the organic solvents (such as benzene and esters) in the adhesive will remain on the metal pipe surface for a long time, damaging the galvanized or passivation layer. This is particularly problematic in humid environments (such as air conditioning condensate pipes), accelerating rust and corrosion and shortening the pipe's lifespan. Forcibly scraping off residual adhesive may also scratch the pipe surface, creating new corrosion spots. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the prior art, this utility model provides an insulated ventilation duct that solves the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a heat-insulating ventilation duct, comprising a square pipe body and a heat-insulating pad fitted on the surface of the square pipe body, a vertically movable base strip provided on the top of the square pipe body, a pressure strip fixedly connected to the bottom of the base strip, the pressure strip being pressed and set at the junction of the two ends of the heat-insulating pad, and a docking frame fixedly connected to both ends of the square pipe body, the two ends of the base strip being detachably and fixedly installed with the docking frame.

[0008] Preferably, positioning holes are provided at both ends of the base strip, and a screw is fixedly connected to the top of the docking frame. The top end of the screw passes through the positioning hole, and a nut is threaded onto the top end of the screw. The bottom end of the nut abuts against the base strip.

[0009] Preferably, a handle is fixedly connected to the top of the base strip, and the handle is in the shape of an inverted U.

[0010] Preferably, the two ends of the square tube are respectively fixedly connected with a insertion frame and a sleeve frame, and the insertion frame at one end of the square tube can be inserted into the sleeve frame at the other end of the square tube.

[0011] Preferably, the surface of the docking frame is provided with a plurality of symmetrically distributed through holes, and bolts are inserted into the through holes, and nuts are threaded onto the threaded ends of the bolts.

[0012] Preferably, the insulation pad is made of centrifugal glass wool.

[0013] (III) Beneficial Effects

[0014] This utility model provides a heat-insulated ventilation duct, which has the following beneficial effects:

[0015] 1. In this utility model, the insulation pad is first wrapped around the surface of the square tube. The screw is passed through the positioning hole, and then the base strip is pressed from above, so that the pressure strip presses against the junction of the two ends of the insulation pad. A nut is then screwed onto the end of the screw to lock the base strip, thus fixing the insulation pad. When disassembly is required, the operation is the reverse of the above process. The base strip and pressure strip can be removed by loosening the nut, which makes it easy to separate the insulation pad from the square tube. There is no need to use a utility knife to cut or scrape off the glue. The operation can be completed by one person. Moreover, there is no scraping or prying action during disassembly, which avoids damage to the surface of the square tube.

[0016] 2. In this utility model, the initial docking work can be achieved by inserting the insertion frame at the end of one square tube into the sleeve frame at the end of another square tube; then, by using multiple sets of bolts and nuts, the two docking frames are locked together, thus achieving the assembly of the two square tubes. Attached Figure Description

[0017] Figure 1 This is a left-side perspective view of the thermal insulation ventilation duct proposed in this utility model.

[0018] Figure 2 This is a right-side perspective view of the thermal insulation ventilation duct proposed in this utility model.

[0019] Figure 3 for Figure 1 Cross-sectional structural diagram;

[0020] Figure 4 This is a partial structural diagram of an insulated ventilation duct proposed in this utility model;

[0021] Figure 5 This is a structural diagram of the assembled state of an insulated ventilation duct proposed in this utility model.

[0022] In the diagram: 1. Square tube; 2. Insulation pad; 3. Connecting frame; 301. Through hole; 4. Insert frame; 5. Sleeve frame; 6. Base strip; 601. Positioning hole; 7. Pressure strip; 8. Handle; 9. Screw; 10. Nut 1; 11. Bolt; 12. Nut 2. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figures 1 to 3 This utility model provides a technical solution: a heat-insulated ventilation duct, including a square pipe body 1, a heat-insulating pad 2 sleeved on the surface of the square pipe body 1, a vertically movable base strip 6 provided on the top of the square pipe body 1, a pressure strip 7 fixedly connected to the bottom of the base strip 6, the pressure strip 7 being pressed and set at the junction of the two ends of the heat-insulating pad 2 (the two ends of the heat-insulating pad 2 are laid on the upper side of the square pipe body 1, so the pressure strip 7 is pressed and set on the upper side of the square pipe body 1), and a docking frame 3 fixedly connected to both ends of the square pipe body 1, the two ends of the base strip 6 being detachably and fixedly installed with the docking frame 3.

[0025] The insulation pad 2 is wrapped around the surface of the square tube 1, so that the two ends of the insulation pad 2 are placed on the upper side of the square tube 1. Then, the base strip 6 is pressed down, so that the pressure strip 7 presses and fixes the junction of the two ends of the insulation pad 2, and fixes the end of the base strip 6 to the docking frame 3. The base strip 6 can be easily separated and disassembled from the docking frame 3, that is, the insulation pad 2 can be easily disassembled without damaging the square tube 1.

[0026] Reference Figure 2 and Figure 4 The base strip 6 has positioning holes 601 at both ends. The top of the mating frame 3 is fixedly connected to a screw 9. The top of the screw 9 passes through the positioning hole 601 and a nut 10 is threaded onto the top of the screw 9. The bottom of the nut 10 abuts against the base strip 6.

[0027] The installation and removal of the insulation pad 2 are described in detail below. First, wrap the insulation pad 2 around the surface of the square tube 1. Then, pass the screw 9 through the corresponding positioning hole 601. Next, press the base strip 6 from above, so that the pressure strip 7 presses the junction of the two ends of the insulation pad 2. Finally, screw the nut 10 onto the end of the screw 9 to lock the base strip 6, thus fixing the insulation pad 2. When disassembly is required, the operation is the reverse of the above process. By loosening the nut 10, the base strip 6 and pressure strip 7 can be removed, making it easy to separate the insulation pad 2 from the square tube 1. There is no need to use a utility knife to cut or scrape off the glue. The operation can be completed by one person. Moreover, there is no scraping or prying action during disassembly, avoiding damage to the surface of the square tube 1.

[0028] Reference Figure 2 and Figure 4 A handle 8 is fixedly connected to the top of the base strip 6, and the handle 8 is in the shape of an inverted U.

[0029] When installing the base strip 6, the operator can hold the handle 8 with one hand to easily control the position of the base strip 6. After aligning the screw 9 with the positioning hole 601 and passing it through, press down on the base strip 6 so that the pressure strip 7 comes into contact with the insulation pad 2.

[0030] Reference Figure 1 and Figure 2 The square tube 1 has a fixed frame 4 and a sleeve frame 5 at both ends, and the frame 4 at one end of the square tube 1 can be inserted into the sleeve frame 5 at the other end of the square tube 1.

[0031] By inserting the insertion frame 4 at one end of a square tube 1 into the sleeve frame 5 at the other end of the square tube 1, the initial docking of the two square tubes 1 can be achieved.

[0032] Since each square pipe segment 1 has both a insertion frame 4 (active docking end) and a sleeve frame 5 (passive docking end), there is no need to distinguish between the "male end pipe" and the "female end pipe" during docking—any two pipe segments can be quickly connected via "pipe A insertion frame 4 → pipe B sleeve frame 5," and this connection can be extended indefinitely. This "two-way adaptability" design is suitable for flexibly adjusting the pipeline path on-site (such as temporarily adding pipe segments or adjusting the direction).

[0033] Reference Figure 1 and Figure 2 The surface of the docking frame 3 is provided with multiple symmetrically distributed through holes 301. Bolts 11 are inserted into the through holes 301, and nuts 12 are threaded onto the threaded ends of the bolts 11.

[0034] Then, by using multiple sets of bolts 11 and nuts 12, the two mating frames 3 are locked together, thus achieving the assembly of the two square tubes 1.

[0035] The outer diameter of the insert frame 4 and the inner diameter of the sleeve frame 5 are designed with a "clearance fit" (the fit clearance is controlled at 0.1mm-0.3mm), which can be sealed by a rubber ring to improve the sealing degree;

[0036] When the insert frame 4 is inserted into the sleeve frame 5, the two mating frames 3 come into contact with each other; at this time, the lateral (left and right) and longitudinal (front and back) displacement of the insert frame 4 can be constrained to avoid "left and right offset" or "front and back misalignment" of the two pipe sections.

[0037] Reference Figure 1 and Figure 2 The insulation pad 2 is made of centrifugal glass wool.

[0038] Centrifugal glass wool is made from molten glass through a fiberization process. Its core advantages lie in its ability to provide insulation at medium and low temperatures, its low cost, and its ease of processing. It is suitable for scenarios with moderate insulation requirements and a focus on cost-effectiveness. In the medium and low temperature range of -120℃ to 250℃, it can effectively lock in heat or block the transfer of cold. For example, when used in air conditioning ventilation ducts (supply air temperature 5℃-50℃), it can reduce heat loss by more than 30%, and its insulation effect remains stable over long-term use without significant degradation due to temperature fluctuations.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A thermally insulated ventilation duct, characterized in that: Includes a square tube (1) and an insulation pad (2) fitted on the surface of the square tube (1). A vertically movable base strip (6) is provided on the top of the square tube (1). A pressure strip (7) is fixedly connected to the bottom of the base strip (6). The pressure strip (7) is pressed and set at the junction of the two ends of the insulation pad (2). Both ends of the square tube (1) are fixedly connected to a docking frame (3). The ends of the base strip (6) can be detachably fixed to the docking frame (3).

2. The insulated ventilation duct according to claim 1, characterized in that: The base strip (6) has positioning holes (601) at both ends. The top of the docking frame (3) is fixedly connected to a screw (9). The top of the screw (9) passes through the positioning hole (601). The top of the screw (9) is threaded with a nut (10). The bottom of the nut (10) abuts against the base strip (6).

3. The insulated ventilation duct according to claim 1, characterized in that: The top of the base strip (6) is fixedly connected to a handle (8), and the handle (8) is in the shape of an inverted U.

4. The thermal insulation ventilation duct according to claim 1, characterized in that: The square tube (1) is fixedly connected to a insertion frame (4) and a sleeve frame (5) at both ends, and the insertion frame (4) at one end of the square tube (1) can be inserted into the sleeve frame (5) at the other end of the square tube (1).

5. The thermal insulation ventilation duct according to claim 1, characterized in that: The surface of the docking frame (3) is provided with multiple symmetrically distributed through holes (301), and bolts (11) are inserted inside the through holes (301). The threaded end of the bolts (11) is threaded with a nut (12).

6. The thermal insulation ventilation duct according to claim 1, characterized in that: The insulation pad (2) is made of centrifugal glass wool.

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