Parallel return water device on the boiler

Abstract

The present invention discloses a parallel flow water outlet device on a boiler, which comprises a heat exchanger and an outer water inlet pipe. The first water outlet on the heat exchanger is communicated with the outer water inlet pipe. An inner water outlet pipe is inserted into the outer water inlet pipe. One end of the inner water outlet pipe extends out of the end of the outer water inlet pipe, and the other end thereof is communicated with the inside of the outer water inlet pipe. Both ends of the outer water inlet pipe are of a closed structure, and the second water outlet thereof is communicated with the water inlet of the inner water outlet pipe. There is a certain distance between the inner wall of the outer water inlet pipe and the outer wall of the inner water outlet pipe, so that the water flow flowing out of the heat exchanger can converge into the water inlet of the inner water outlet pipe. The advantages are as follows: The present invention can save space, has a lighter weight and a lower manufacturing cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of boilers, and particularly relates to a same - way water outlet device on a boiler. Background Art

[0002] Currently, in the part of the inner water outlet pipe of the boiler, a U - shaped arrangement is adopted, that is, one of the pipes (the water inlet pipe) is connected to the heat exchanger, and the other pipe (the water outlet pipe) is arranged in parallel with it and connected through a transition pipe. As described in the patent numbers: 2018217048228 and 2017208664781, the water outlet structure part in these two published documents adopts a U - shaped structure. This structural design makes the product occupy a large space, have a heavy weight, and a high cost. Therefore, it is necessary to make improvements. Summary of the Invention

[0003] The purpose of the present invention is to address the deficiencies of the above - mentioned existing technologies and provide a same - way water outlet device on a boiler, which has the characteristics of saving space, having a light weight, and a low manufacturing cost.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a same - way water outlet device on a boiler, including a heat exchanger and an outer water inlet pipe. The first water outlet on the heat exchanger is communicated with the outer water inlet pipe. An inner water outlet pipe is inserted into the outer water inlet pipe. One end of the inner water outlet pipe extends out of the end of the outer water inlet pipe, and the other end is communicated with the inside of the outer water inlet pipe. Both ends of the outer water inlet pipe are of a closed structure, and its second water outlet is communicated with the water inlet of the inner water outlet pipe. There is a certain distance between the inner wall of the outer water inlet pipe and the outer wall of the inner water outlet pipe to allow the water flowing out of the heat exchanger to gather into the water inlet of the inner water outlet pipe.

[0005] The central axes of the outer water inlet pipe and the inner water outlet pipe coincide.

[0006] The outer water inlet pipe and the heat exchanger are of an integral structure, and its structure is: there is a sleeve on the heat exchanger, and the sleeves on adjacent heat exchangers are tightly connected to form the outer water inlet pipe, and the connection part is sealed by a sealing ring.

[0007] A separable condensation pan is connected to the bottom of the heat exchanger, and the condensation pan has a reinforcing hem.

[0008] Sealing flanges are provided on the outer side end faces of the sleeves sleeved on the front - most and the rearmost ends of the outer water inlet pipe.

[0009] After adopting the above structure, the advantages of the present invention compared with the prior art are as follows: The inner water outlet pipe of the present invention is sleeved inside the outer water inlet pipe, and the water sources of the outer water inlet pipe are uniformly gathered at the water inlet of the inner water outlet pipe and then discharged uniformly. Compared with the existing U-shaped connection structure, this structure can save space and reduce costs; the outer water inlet pipe is composed of sleeves connected and combined on multiple heat exchangers, which can further optimize the structure and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural diagram of the present invention.

[0011] Figure 2 is a schematic diagram of the position of the inner water outlet pipe of the present invention.

[0012] Figure 3 is a partial structural cross-sectional view of the present invention.

[0013] Figure 4 is a schematic diagram of the partial structure of the heat exchanger of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0014] The following are only the preferred embodiments of the present invention, which do not limit the protection scope of the present invention. The present invention will be further described below with reference to the drawings and embodiments.

[0015] Embodiment, see Figures 1 to 4As shown: A same-way water outlet device on a boiler, including a heat exchanger 10, an inlet outer pipe 20 and an outlet inner pipe 30. The heat exchanger 10 is integrally formed by casting and is used for heat conduction to heat the water source passing through its interior. At the bottom of the heat exchanger 10, there is an inlet pipe 11 which can transport the water source into the heat exchanger 10. The first water outlet 12 on the heat exchanger 10 is communicated with the inlet outer pipe 20. The inlet outer pipe 20 can be made of stainless steel pipe or carbon steel pipe. When it is made of stainless steel pipe or carbon steel pipe, a plurality of water inlets are provided on its peripheral surface, and the water inlets are communicated with the first water outlet 12 on the heat exchanger 10. Or, the inlet outer pipe 20 and the heat exchanger 10 are of an integral structure. The specific structure is: There is a sleeve 21 on the heat exchanger 10. The sleeve 21 is formed together with the heat exchanger 10 during casting, and the sleeve 21 is a structure with both ends penetrating. The sleeves 21 on adjacent heat exchangers 10 are tightly connected to form the inlet outer pipe 20, and are sealed at their connection by a sealing ring. The first water outlet 12 of the heat exchanger 10 penetrates to the inner peripheral surface of the sleeve 21. The outlet inner pipe 30 is sleeved inside the inlet outer pipe 20, and its central axis can be coincident or parallel to each other. One end of the outlet inner pipe 30 extends out of the end of the inlet outer pipe 20, and the other end is communicated with the inside of the inlet outer pipe 20. Both ends of the inlet outer pipe 20 are of a closed structure. It should be noted that when an integral stainless steel pipe or carbon steel pipe structure is adopted, sealing flanges 22 are respectively arranged at both ends. Among them, the water outlet of the outlet inner pipe 30 penetrates through the sealing flange 22 and is communicated with the flange pipe. And when the sleeve 21 structure is adopted, sealing flanges 22 are arranged on the outer end faces of the sleeves 21 at the frontmost and rearmost ends of the inlet outer pipe 20. Among them, there is a through hole on the sealing flange 22 at the front end for the pipeline to be communicated with the outlet inner pipe 30 for water outlet. The second water outlet 23 of the inlet outer pipe 20 is communicated with the water inlet of the outlet inner pipe 30. The specific structure is: There is a certain distance between the water inlet of the outlet inner pipe 30 and the sealing flange 22, and this distance forms the second water outlet 23 of the inlet outer pipe 20. There is a certain distance between the inner wall of the inlet outer pipe 20 and the outer wall of the outlet inner pipe 30 to allow the water flow flowing out of the heat exchanger 10 to gather into the water inlet of the outlet inner pipe 30. During operation, the water source enters the heat exchanger 10 from the inlet pipe 11 from bottom to top for heat exchange, and after heat exchange, it flows into the inside of the inlet outer pipe 20 from its first water outlet 12, and then flows into the outlet inner pipe 30 from the second water outlet 23 of the inlet outer pipe 20. A condensating pan 40 which can be separated from it is connected to the bottom of the heat exchanger 10. This split connection structure can reduce the overall weight to save costs. There is a reinforcing folded edge 41 on the condensating pan 40, and the reinforcing folded edge 41 can play a role in strengthening its strength.

Claims

1. A same-way water outlet device on a boiler, comprising a heat exchanger (10) and an outer water inlet pipe (20), wherein a first water outlet (12) on the heat exchanger (10) is communicated with the outer water inlet pipe (20); and it is characterized in that: An inner water outlet pipe (30) is inserted into the outer water inlet pipe (20). One end of the inner water outlet pipe (30) extends out of the end of the outer water inlet pipe (20), and the other end thereof communicates with the interior of the outer water inlet pipe (20). Both ends of the outer water inlet pipe (20) are of a closed structure, and its second water outlet (23) communicates with the water inlet of the inner water outlet pipe (30). There is a certain distance between the inner wall of the outer water inlet pipe (20) and the outer wall of the inner water outlet pipe (30) to allow the water flow flowing out of the heat exchanger (10) to converge into the water inlet of the inner water outlet pipe (30). The outer water inlet pipe (20) and the heat exchanger (10) are of an integral structure, and its structure is: a sleeve (21) is provided on the heat exchanger (10), and the sleeves (21) on adjacent heat exchangers (10) are tightly connected to form the outer water inlet pipe (20), and are sealed at the connection thereof through a sealing ring. A separable condensation tray (40) is connected to the bottom of the heat exchanger (10), and the condensation tray (40) has a reinforcing flange (41).

2. The same-way water outlet device on the boiler according to claim 1, characterized in that: The central axes of the outer water inlet pipe (20) and the inner water outlet pipe (30) coincide.

3. The same-way water outlet device on the boiler according to claim 1, characterized in that: Sealing flanges (22) are provided on the outer side end faces of the sleeves (21) sleeved on the foremost and rearmost ends of the outer water inlet pipe (20).

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