Heat preservation sleeve for heating and ventilation branch pipe

Abstract

The utility model relates to the field of heating and ventilation heat preservation structures, in particular to a heat preservation sleeve for a heating and ventilation branch pipe. Comprising a front shell and a rear shell, a front mounting groove matched with the branch pipe in shape is formed in the front shell, a rear mounting groove matched with the branch pipe in shape is formed in the rear shell, the branch pipe is wrapped after the front shell and the rear shell are combined, and the front mounting groove and the rear mounting groove are spliced to form a cavity for containing the branch pipe. The edges of the two sides of the front shell in the width direction are provided with step faces, the corresponding positions of the two sides of the rear shell in the width direction are provided with matched step faces, and the front shell and the rear shell are fixed through a connecting structure. The front shell and the rear shell are designed in a split mode, the front shell and the rear shell are designed in a step shape in the width direction, rapid positioning can be achieved, two right-angle matching faces are formed between the two shells, the two right-angle matching faces are matched with the positioning grooves and the positioning protruding strips, sealing is better achieved, condensate water is prevented, the installation structure is simple, and machining and installation operation are convenient.

Description

Technical Field

[0001] This utility model relates to the field of HVAC insulation structures, specifically to an insulation sleeve for HVAC branch pipes. Background Technology

[0002] Refrigerant piping in refrigeration units typically uses copper tubing. To prevent condensation due to temperature differences during refrigerant transport, a layer of rubber-plastic insulation material is usually wrapped around the outside of the copper tubing, or a rubber-plastic insulation sleeve is fitted over the copper tubing. In the refrigeration cycle system, refrigerant is distributed from the main pipe to various branch pipes via branch pipes. A branch pipe generally consists of a main pipe, a branch pipe body, and branch pipes. Due to its irregular shape, it is impossible to fit insulation sleeves or achieve a tight wrapping with rubber-plastic material. Therefore, existing technology generally uses branch pipe insulation sleeves to individually wrap and protect the branch pipes.

[0003] To achieve better wrapping effect, an installation groove corresponding to the shape of the branch pipe is set inside the insulation sleeve for fitting against the outer wall of the branch pipe. For ease of installation, the protective sleeve is designed as a split type, which can be directly installed and fixed on site. The branch pipe insulation sleeve disclosed in patent CN222479883U forms the body of the protective sleeve through a front sleeve and a rear sleeve, and the connection between the front and rear sleeves is achieved by the cooperation of a first protrusion and a second protrusion with corresponding first and second recesses. The installation structure of the protrusion is relatively complex, and the fixing method is simple. It is prone to gaps at the connection surface during use due to dimensional errors during molding and material shrinkage, which can eventually lead to condensation and other problems. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an insulation sleeve for HVAC branch pipes that is easy to install, has a stable connection method, and can prevent condensation.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An insulation sleeve for a heating and ventilation manifold includes a front shell and a rear shell. The front shell has a front mounting groove adapted to the shape of the manifold, and the rear shell has a rear mounting groove adapted to the shape of the manifold. The front and rear shells are combined to enclose the manifold. The front mounting groove and the rear mounting groove are spliced ​​to form a cavity for accommodating the manifold. The front and rear shells are fixed together by a connecting structure. The connecting structure includes a positioning groove on the inner side of the connecting surface of the front shell and a positioning protrusion on the inner side of the connecting surface of the rear shell. The positioning groove extends along the length of the front mounting groove and passes through both ends. The positioning protrusion corresponds to and cooperates with the positioning groove.

[0007] Furthermore, positioning grooves are provided on both sides of the front mounting groove in the width direction, and the positioning grooves are coated with an adhesive layer.

[0008] Furthermore, stepped surfaces are provided at both edges of the front housing in the width direction, and corresponding stepped surfaces are provided at both sides of the rear housing in the width direction.

[0009] Furthermore, concave step surfaces are provided on both sides of the front housing, and convex step surfaces are provided on both sides of the rear housing, or each housing is provided with one concave step surface and one convex step surface; the concave step surface and the convex step surface are adapted to each other.

[0010] Furthermore, both the positioning groove and the protrusion are provided on the stepped surface.

[0011] Furthermore, an auxiliary fixing structure is installed between the front and rear housings. The auxiliary fixing structure is a press-type buckle. The male and female buckles of the press-type buckle are respectively installed in the middle of the mating surfaces of the front and rear housings and located between the two branch pipes of the branch pipe.

[0012] Furthermore, the press-type buckle is preferably a spring buckle.

[0013] Furthermore, the front shell and the rear shell are combined to form the main body of the insulation sleeve. The main body of the insulation sleeve includes a main pipe section, a main body section and a branch pipe section. The main pipe section is installed at one end of the main body section and the branch pipe section is installed at the other end of the main body section. The main pipe section is a thick pipe section that wraps the main pipe and the branch pipe section is a thin pipe section that wraps the two branch pipes.

[0014] Furthermore, a clearance groove is provided on the outer side of the end of the main pipe section and each of the branch pipe sections away from the main pipe section, and the clearance groove cooperates with the insulation pipe on the outside of the connecting pipe.

[0015] Furthermore, the middle part of the main pipe section and each of the branch pipe sections is provided with a fixing groove, and a clamp or cable tie is installed in the fixing groove.

[0016] After adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0017] The design features a split front and rear housing. The positioning grooves and positioning protrusions extending along the length of the mounting groove and distributed on both sides of the mounting groove, along with the adhesive within the positioning grooves, enable the positioning and fixation of the front and rear housings. The width of the front and rear housings can optionally be achieved through a stepped design, which allows for quick positioning and forms two right-angle mating surfaces between the two housings, resulting in better sealing and preventing condensation. The installation structure is simple and easy to process and install. Additionally, the push-button fasteners in the middle of the housings provide a dual-fixed installation method, allowing for the installation of the front and rear housings at both the edges and the middle.

[0018] Fixing grooves are set on the outer shell of each pipe section. By installing clamps or cable ties in the fixing grooves, further fixation can be achieved. While ensuring rapid installation, the stability of the installation is ensured, which can better avoid problems such as insufficient wrapping and condensate leakage caused by dimensional deviations and subsequent deformation.

[0019] A clearance groove is provided on the outer side of the end of the main pipe and the branch pipe section away from the main section. The clearance groove is used to connect the protective sleeve on the pipe connected to the main pipe and the branch pipe section, forming the overlap of the protective sleeve, which better avoids condensation caused by the gap of the connection section and improves the protection effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the outside of the split-type shell.

[0021] Figure 2 This is a schematic diagram of the inner side of the split-type shell.

[0022] In the diagram: front housing 1, rear housing 2, mounting groove 3, stepped surface 4, positioning groove 5, positioning protrusion 6, main pipe section 7, main body section 8, diversion pipe section 9, clearance groove 10, press-type buckle 11, fixing groove 12. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:

[0024] As shown in the figure, an insulation sleeve for HVAC manifolds consists of two parts: a front shell 1 and a rear shell 2. Both the front and rear shells are molded from foamed insulation materials such as PU or EVA. It is used to wrap the manifolds to prevent condensation from forming upon contact with air.

[0025] The front and rear housings each have mounting grooves 3 that fit the shape of the manifold. When the front and rear housings are combined, they completely enclose the manifold. The two mounting grooves 3 are joined to form a cavity to accommodate the manifold, creating a snug fit. Stepped surfaces 4 are provided on both sides of the front housing's width direction, extending along its length. Corresponding stepped surfaces are provided on both sides of the rear housing's width direction. Alternatively, concave stepped surfaces can be provided on both sides of the front housing 1, and convex stepped surfaces on both sides of the rear housing 2, or each housing can have one concave and one convex stepped surface. The fit of the stepped surfaces allows the connection seam between the front and rear housings to become two right angles, further preventing external hot air from entering the insulation sleeve. This results in better insulation.

[0026] To ensure the stability of the connection between the front and rear housings, in addition to the stepped surface positioning connection, a positioning groove 5 is machined on the stepped surface of the front housing. The positioning groove 5 extends along the length of the front mounting groove and passes through both ends. A positioning protrusion 6 adapted to the positioning groove is machined on the stepped surface of the rear housing. Adhesive is filled into the positioning groove 5. During installation, the positioning protrusion 6 is embedded into the positioning groove and filled with adhesive, which not only achieves adhesive connection and fixation but also provides further sealing and isolation.

[0027] The front and rear shells are combined to form the main body of the insulation jacket. Since the branch pipe includes a main pipe, a main body (tee), and two branch pipes, the main body of the insulation jacket includes a main pipe section 7, a main body section 8, and branch pipe sections 9. The main pipe section 7 is installed at one end of the main body section 8, and the branch pipe section 9 is installed at the other end of the main body section 8. The main pipe section 7 is the thicker pipe section that wraps around the main pipe, the main body section is the middle section that wraps around the main body (tee), and the branch pipe section 9 is the thinner pipe section that wraps around the two branch pipes. The main pipe, main body, and both sides of each branch pipe of the branch pipe are provided with stepped surfaces and a combination of positioning grooves and positioning protrusions to ensure effective protection and isolation on both sides of the branch pipe.

[0028] A relief groove 10 can be provided on the outer side of the main pipe section 7 and the two branch pipe sections 9 at the ends away from the main pipe section 8. The relief groove runs through the side of each pipe section close to the end face. The protective sleeve on the outer pipe connected to the main pipe and the branch pipe is inserted and matched with the relief groove, so that the protective sleeve overlaps at the connection point, forming protection at both ends of the branch pipe, and avoiding condensation caused by gaps at the connection point.

[0029] To prevent bulges or other issues between the front and rear housings, an auxiliary fixing structure is installed in the middle of the front and rear housings. This auxiliary fixing structure is a push-button buckle 11, with its male and female clips installed in the middle of the front and rear housings respectively, located between the two branch pipes. Spring clips or plastic snap clips can be used for easy installation and removal.

[0030] To further improve the fixing effect, a fixing groove 12 is provided in the middle of the outer side of the main pipe section and the two branch pipe sections, and clamps or cable ties can be selectively installed in the fixing groove.

Claims

1. An insulation sleeve for HVAC branch pipes, characterized in that, The device includes a front housing and a rear housing. The front housing has a front mounting groove adapted to the shape of the manifold, and the rear housing has a rear mounting groove adapted to the shape of the manifold. The front and rear housings are combined to enclose the manifold. The front and rear mounting grooves are spliced ​​together to form a cavity for accommodating the manifold. The front and rear housings are fixed together by a connecting structure. The connecting structure includes a positioning groove on the inner side of the connecting surface of the front housing and a positioning protrusion on the inner side of the connecting surface of the rear housing. The positioning groove extends along the length of the front mounting groove and passes through both ends. The positioning protrusion corresponds to and cooperates with the positioning groove.

2. The insulation sleeve for HVAC branch pipes according to claim 1, characterized in that, Positioning grooves are provided on both sides of the front mounting groove in the width direction, and the positioning grooves are coated with an adhesive layer.

3. The insulation sleeve for HVAC branch pipes according to claim 1, characterized in that, The front housing has stepped surfaces on both sides of its width direction, and the rear housing has corresponding stepped surfaces on both sides of its width direction.

4. The insulation sleeve for HVAC branch pipes according to claim 3, characterized in that, The front housing has concave stepped surfaces on both sides, and the rear housing has convex stepped surfaces on both sides, or each housing has one concave and one convex stepped surface; the concave stepped surfaces and the convex stepped surfaces are adapted to each other.

5. The insulation sleeve for HVAC branch pipes according to claim 3, characterized in that, The positioning groove and the protrusion are both provided on the stepped surface.

6. The insulation sleeve for HVAC branch pipes according to claim 1, characterized in that, An auxiliary fixing structure is installed between the front and rear housings. The auxiliary fixing structure is a press-type buckle. The male and female buckles of the press-type buckle are respectively installed in the middle of the mating surfaces of the front and rear housings and located between the two branch pipes of the branch pipe.

7. The insulation sleeve for HVAC branch pipes according to claim 6, characterized in that, The press-type buckle is preferably a spring buckle.

8. The insulation sleeve for HVAC branch pipes according to claim 1, characterized in that, The front shell and the rear shell are combined to form the main body of the insulation jacket. The main body of the insulation jacket includes a main pipe section, a main body section and a branch pipe section. The main pipe section is installed at one end of the main body section and the branch pipe section is installed at the other end of the main body section. The main pipe section is a thick pipe section that wraps the main pipe and the branch pipe section is a thin pipe section that wraps the two branch pipes.

9. The insulation sleeve for HVAC branch pipes according to claim 8, characterized in that, The outer side of the main pipe section and each of the branch pipe sections away from the main pipe section is provided with a relief groove, which cooperates with the insulation pipe on the outside of the connecting pipe.

10. An insulation sleeve for HVAC branch pipes according to claim 8, characterized in that, The main pipe section and each of the branch pipe sections are provided with a fixing groove in the middle, and a clamp or cable tie is installed in the fixing groove.

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