Interface structure of heat exchanger of wall-hanging stove

Abstract

The utility model relates to an interface structure of a wall-hanging stove heat exchanger, the interface structure is connected on the wall-hanging stove heat exchanger, the wall-hanging stove heat exchanger comprises a shell and a coil pipe, the shell comprises an upper shell and a lower shell, the coil pipe is provided with a water inlet pipe and a water outlet pipe, two sides of the lower shell are provided with sleeves, and the sleeves are connected with the upper shell and the lower shell. The interface structures are respectively clamped in the sleeves, the interface structures are respectively communicated with the water inlet pipe and the water outlet pipe, each interface structure comprises a metal joint, an external pipe and a clamp spring, the metal joints are respectively inserted in the water inlet pipe and the water outlet pipe, the external pipe is inserted in the metal joints, and the clamp spring is connected with the external pipe. And the clamp spring is clamped between the sleeve and the metal joint.

Description

Technical Field

[0001] This utility model relates to an interface structure, and more particularly to an interface structure applied to the heat exchanger of a wall-hung boiler. Background Technology

[0002] As is well known, such as Figure 1 As shown, the heat exchanger 1 of the wall-hung boiler is a heat exchange device. Its design typically involves placing a plastic connector 2 on the shell 3, then fitting a stainless steel coil 4, followed by sealing and closing the cover. This design means that if the plastic connector 2 is damaged, it cannot be replaced separately due to the sealant; the entire heat exchanger 1 must be scrapped. This traditional design not only wastes resources and increases after-sales costs, but also requires equipment shutdown in some applications until a new heat exchanger is installed, inevitably affecting the continuity of use and significantly reducing the user experience. This is considered a major drawback of the existing technology. Summary of the Invention

[0003] The technical solution adopted by this utility model is as follows: an interface structure for a wall-hung boiler heat exchanger. The interface structure is connected to the wall-hung boiler heat exchanger. The wall-hung boiler heat exchanger includes a shell and a coil. The coil is disposed in the shell. The shell includes an upper shell and a lower shell. The coil has an inlet pipe and an outlet pipe. Sleeves are provided on both sides of the lower shell. The inlet pipe and the outlet pipe are respectively disposed in the sleeves.

[0004] The interface structure is respectively snapped into the sleeve, and is connected to the inlet pipe and the outlet pipe. The interface structure includes a metal connector, an outer pipe, and a retaining spring. The metal connector is inserted into the inlet pipe and the outlet pipe, the outer pipe is inserted into the metal connector, and the retaining spring is snapped between the sleeve and the metal connector. The metal connector has a connecting cavity and a connecting cavity, the connecting cavity and the connecting cavity are connected, and the outer pipe is inserted into the connecting cavity. A retaining rib is provided on the outer surface of the metal connector, corresponding to the retaining rib of the metal connector. A retaining ring is provided in the sleeve of the lower housing, and a retaining spring cavity is formed between the retaining rib and the retaining ring. The retaining spring is snapped into the retaining spring cavity.

[0005] The beneficial effects of this utility model are as follows: The interface structure of this utility model is respectively snapped into the sleeve, and the interface structure is respectively connected to the water inlet pipe and the water outlet pipe. The interface structure includes a metal connector, an outer pipe and a retaining spring. The metal connector is respectively inserted into the water inlet pipe and the water outlet pipe. The outer pipe is inserted into the metal connector. The retaining spring is snapped between the sleeve and the metal connector. The metal connector has a connecting cavity and a connecting cavity. The connecting cavity and the connecting cavity are connected. The outer pipe is inserted into the connecting cavity. A retaining rib is provided on the outer surface of the metal connector, corresponding to the retaining rib of the metal connector. A retaining ring is provided in the sleeve of the lower housing. A retaining spring cavity is formed between the retaining rib and the retaining ring. The retaining spring is snapped into the retaining spring cavity. Through the above connection structure, the interface structure is detachably connected to the heat exchanger of the wall-mounted boiler, so as to facilitate replacement, assembly and disassembly. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the existing technology.

[0007] Figure 2 This is a three-dimensional exploded view of the present invention.

[0008] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0009] Figure 4 This is a schematic diagram of the metal connector and retaining ring of this utility model. Detailed Implementation

[0010] like Figures 2 to 4 As shown, an interface structure 100 of a wall-hung boiler heat exchanger is connected to a wall-hung boiler heat exchanger 10. The wall-hung boiler heat exchanger 10 includes a housing 20 and a coil 30. The coil 30 is disposed in the housing 20. The housing 20 includes an upper housing 21 and a lower housing 22. The coil 30 has an inlet pipe 31 and an outlet pipe 32. Sleeves 23 are provided on both sides of the lower housing 22. The inlet pipe 31 and the outlet pipe 32 are respectively disposed in the sleeves 23.

[0011] The interface structure 100 is respectively snapped into the sleeve 23, and the interface structure 100 is respectively connected to the water inlet pipe 31 and the water outlet pipe 32.

[0012] The interface structure 100 includes a metal connector 200, an outer pipe 300, and a retaining ring 400. The metal connector 200 is inserted into the inlet pipe 31 and the outlet pipe 32, respectively. The outer pipe 300 is inserted into the metal connector 200. The retaining ring 400 is snapped between the sleeve 23 and the metal connector 200. Through the above connection structure, the interface structure 100 is detachably connected to the wall-hung boiler heat exchanger 10 to facilitate replacement, assembly, and disassembly.

[0013] The metal connector 200 has a communicating cavity 210 and a connecting cavity 220, wherein the communicating cavity 210 is connected to the connecting cavity 220, the outer pipe 300 is inserted into the connecting cavity 220, and a retaining rib 230 is provided on the outer surface of the metal connector 200.

[0014] In practical implementation, the front end of the metal connector 200 is provided with several sealing ring grooves 241, and each sealing ring groove 241 is provided with a sealing ring 242.

[0015] Corresponding to the retaining rib 230 of the metal connector 200, a retaining ring 231 is provided in the sleeve 23 of the lower housing 22. A retaining spring cavity 232 is formed between the retaining rib 230 and the retaining ring 231. The retaining spring 400 is engaged in the retaining spring cavity 232. The metal connector 200 can be detachably engaged in the sleeve 23 of the lower housing 22 by means of the retaining spring 400.

[0016] In practice, the metal connector 200 is made of copper, and the retaining rib 230 is annular.

[0017] In practice, stainless steel outer sealing sleeves 500 are respectively provided between the water inlet pipe 31, the water outlet pipe 32 and the sleeve 23. The snap ring 400 is abutted on one side of the snap rib 230, and the end of the stainless steel outer sealing sleeve 500 is abutted on the other side of the snap rib 230.

[0018] In practical implementation, the end of the outer pipe 300 is provided with an end sealing groove 310, and an end sealing ring 311 is provided in the end sealing groove 310.

[0019] In practice, the structure of this utility model can not only be directly connected to the heat exchanger 10 of the wall-hung boiler, but also be used to replace the existing heat exchanger 10 when the interface is damaged and leaks. The specific replacement method is described below.

[0020] Step 1: Preparation: Prepare the following tools and components: electric heating knife, metal connector 200 (as per this invention), snap ring 400, sealing ring, snap ring pliers, etc. Check whether the specifications of the metal connector 200 are compatible with the heat exchanger and whether the sealing ring is intact.

[0021] Step 2: Remove the old plastic connector: Turn on the electric heating knife and wait for it to reach the appropriate cutting temperature. Slowly bring the cutting edge of the electric heating knife close to the sealant connecting the plastic connector to the heat exchanger, and evenly heat and cut along the plastic connector. After cutting, carefully use tools to separate the plastic connector from the heat exchanger and remove it, taking care to avoid damaging the heat exchanger's pipes.

[0022] Step 3: Install the new copper connector: Install the sealing ring into the sealing groove of the metal connector 200, ensuring the sealing ring is installed flat and free from twisting or damage. Align the metal connector 200 with the sealing ring installed with the connecting pipe of the heat exchanger and slowly slide it in, ensuring a tight fit between the new copper connector and the pipe.

[0023] Step 4: Install the retaining ring: Use retaining ring pliers to clamp the retaining ring 400, align the retaining ring 400 with the limiting groove of the metal connector 200, and slowly slide the retaining ring 400 into the limiting groove so that the retaining ring 400 is embedded in the corresponding groove of the heat exchanger. Ensure that the retaining ring is securely installed and there are no signs of loosening.

[0024] Step 5: Inspection and Testing: After installation, check that the metal connector 200 is installed correctly and that the retaining ring 400 is properly installed. Reinstall the heat exchanger onto the equipment and perform pressure tests or other relevant performance tests. Check for leaks at the interfaces to ensure the heat exchanger is functioning properly.

[0025] The replacement method described above achieves the following effects: 1. Cost savings: It avoids scrapping the entire heat exchanger due to damage to the plastic connector; only a new copper connector needs to be replaced, significantly reducing equipment maintenance costs. 2. Simple operation: The replacement operation can be completed using common tools such as hot knife tools and snap ring pliers, requiring no complex equipment or professional skills, thus improving maintenance efficiency. 3. Reliable sealing: Using a sealing ring and controlling its compression to 22% effectively ensures the sealing performance of the new connector, ensuring the normal operation of the heat exchanger and reducing the risk of leakage. 4. Extended service life: By promptly replacing damaged connectors, the heat exchanger can continue to operate normally, extending the overall service life of the heat exchanger and increasing the value of the equipment.

Claims

1. An interface structure for a wall-hung boiler heat exchanger, the interface structure being connected to the wall-hung boiler heat exchanger, the wall-hung boiler heat exchanger including a shell and coils, wherein, The coil is disposed within the housing, which includes an upper housing and a lower housing. The coil has an inlet pipe and an outlet pipe. Sleeves are provided on both sides of the lower housing, and the inlet pipe and outlet pipe are respectively disposed within these sleeves. The coil is characterized by: The interface structure is respectively snapped into the sleeve, and is connected to the inlet pipe and the outlet pipe. The interface structure includes a metal connector, an outer pipe, and a retaining spring. The metal connector is inserted into the inlet pipe and the outlet pipe, the outer pipe is inserted into the metal connector, and the retaining spring is snapped between the sleeve and the metal connector. The metal connector has a connecting cavity and a connecting cavity, the connecting cavity and the connecting cavity are connected, and the outer pipe is inserted into the connecting cavity. A retaining rib is provided on the outer surface of the metal connector, corresponding to the retaining rib of the metal connector. A retaining ring is provided in the sleeve of the lower housing, and a retaining spring cavity is formed between the retaining rib and the retaining ring. The retaining spring is snapped into the retaining spring cavity.

2. The interface structure of a wall-hung boiler heat exchanger as described in claim 1, characterized in that: Stainless steel outer sealing sleeves are respectively installed between the water inlet pipe, the water outlet pipe and the sleeve. The snap ring is abutted on one side of the snap rib, and the end of the stainless steel outer sealing sleeve is abutted on the other side of the snap rib.

3. The interface structure of a wall-hung boiler heat exchanger as described in claim 1, characterized in that: The outer pipe end is provided with an end sealing groove, and an end sealing ring is provided in the end sealing groove.

4. The interface structure of a wall-hung boiler heat exchanger as described in claim 1, characterized in that: The front end of the metal connector is provided with several sealing ring grooves, and a sealing ring is provided in each of the sealing ring grooves.

5. The interface structure of a wall-hung boiler heat exchanger as described in claim 1, characterized in that: The metal connector is made of copper.

6. The interface structure of a wall-hung boiler heat exchanger as described in claim 1, characterized in that: The rib is ring-shaped.

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