Condensing boiler capable of filtering smoke dust

By using metal fiber filters and electronically controlled three-way valves in condensing boilers, the problem of difficulty in quickly clearing clogged filters has been solved, enabling continuous operation of the condensing boiler and efficient dust filtration during filter replacement.

CN224175347UActive Publication Date: 2026-04-28DEZHOU WEINUO COOLING & HEATING EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DEZHOU WEINUO COOLING & HEATING EQUIP CO LTD
Filing Date
2025-06-04
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

The existing condensing boiler's filter is difficult to clear quickly after it becomes clogged, and replacement requires disassembling the machine, which affects normal operation.

Method used

Employing a metal fiber filter and an electronically controlled three-way valve, the flow meter detects blockages and automatically switches to the emergency flow path, allowing for quick filter replacement and ensuring continuous operation of the condensing boiler.

Benefits of technology

It enables quick replacement of clogged filters without shutting down the machine, ensuring continuous operation of the condensing boiler and efficient filtration of flue gas.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224175347U_ABST
    Figure CN224175347U_ABST
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Abstract

The utility model discloses a condensing boiler capable of filtering smoke dust. A condensation boiler capable of filtering smoke dust comprises a working line, the working line comprises a main body, an input pipe is fixedly installed at the steam input end of the main body, a collecting pipe is fixedly installed at the end, away from the main body, of the input pipe, and a filtering mechanism for filtering the smoke dust of input steam is fixedly installed at the end, away from the input pipe, of the collecting pipe; the metal fiber filter screen is used for filtering passing steam, the filter screen can be quickly replaced only by opening the dismounting layer after the filter device is blocked, when the inside of the filter device is blocked, the flow meter displays that the flow is reduced, and at the moment, the electronic control three-way valve enables a flow channel to be replaced by an emergency flow channel. An operator can quickly replace the filter device only by opening the dismounting layer, and the condensation boiler can continue to operate when the filter screen is replaced.
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Description

Technical Field

[0001] This utility model relates to the field of condensing boilers, specifically a condensing boiler capable of filtering smoke and dust. Background Technology

[0002] A condensing boiler utilizes a highly efficient condensing waste heat recovery device to absorb the sensible heat and latent heat released from the high-temperature flue gas discharged from the boiler, thereby improving the boiler's thermal efficiency. A search revealed prior art publication number CN219199232U, which discloses a low-noise mixed-NOx condensing boiler. This low-noise mixed-NOx condensing boiler includes: a boiler body comprising a soundproof enclosure, a fan, a sound insulation panel, and a flue. The soundproof enclosure is fixedly installed on one side of the boiler body, the fan is fixedly installed inside the enclosure, the sound insulation panel is fixedly installed inside the enclosure, and the flue is fixedly connected to the boiler body; a filter box is fixedly installed on the boiler body; and a connecting pipe is fixedly installed at the flue outlet end, with the outlet end of the connecting pipe fixedly connected to the filter box. The existing condensing boilers mentioned above have filters that are difficult to unclog or replace after becoming clogged during use, and the machine needs to be disassembled to replace the filters, making it impossible to replace the filters quickly. Therefore, based on the above research and in light of the existing problems, a condensing boiler that can filter smoke and dust is provided. Utility Model Content

[0003] The purpose of this invention is to provide a condensing boiler that can filter smoke and dust, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a condensing boiler capable of filtering smoke and dust, comprising a working line, the working line comprising a main body, an input pipe fixedly installed at the steam input end of the main body, a manifold fixedly installed at the end of the input pipe away from the main body, and a filter mechanism for filtering smoke and dust from the input steam fixedly installed at the end of the manifold away from the input pipe.

[0005] Furthermore, the working line includes an outer protective layer, which is fixedly installed on the outer layer of the main body.

[0006] Furthermore, the filtration mechanism includes a protective shell, which is fixedly installed at the output end of the manifold away from the input pipe. A flow meter is fixedly installed on the outer layer of the manifold near the protective shell. Meanwhile, a disassembly layer is fixedly installed at the lower end of the protective shell, and a three-way valve is fixedly installed at the input end of the protective shell.

[0007] Furthermore, a secondary filter is fixedly installed at the internal output outlet of the protective shell, and a primary filter is fixedly installed at the internal input inlet of the protective shell.

[0008] Furthermore, a bend is fixedly installed on the protruding part of the manifold, and the end of the bend away from the manifold is fixedly installed on the output end of the emergency filter disassembly layer. An air guide pipe is fixedly installed on the input end of the emergency filter disassembly layer, and the end of the air guide pipe away from the emergency filter disassembly layer is fixedly installed on the protruding part of the three-way valve.

[0009] Furthermore, an air inlet pipe is fixedly installed at the input end of the three-way valve.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention filters the steam through a metal fiber filter screen. When the filter screen becomes clogged, it can be quickly replaced simply by opening the disassembly layer. Furthermore, when replacing the filter screen, the air intake of the condensing boiler is changed to an emergency flow channel, allowing the condensing boiler to continue operating.

[0012] This invention uses a flow meter to detect whether the filter is clogged. When the filter is clogged, the flow meter shows a decrease in flow. At this time, the electronically controlled three-way valve will switch the flow channel to the emergency flow channel. Therefore, the condensing boiler can continue to be used without stopping when the filter is replaced. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the condensing boiler structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the pipeline structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the filter mechanism of this utility model.

[0017] In the diagram: 1. Working line; 101. Outer protective layer; 102. Main body; 103. Input pipe; 104. Manifold; 105. Bend; 106. Air guide pipe; 107. Air inlet pipe;

[0018] 2. Filtering mechanism; 201. Flow meter; 202. Protective shell; 203. Disassembly layer; 204. Three-way valve; 205. Secondary filter screen; 206. Primary filter screen. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example: Please refer to Figure 2 A condensing boiler capable of filtering flue gas includes a working line 1, which comprises a main body 102. An input pipe 103 is fixedly installed at the steam input end of the main body 102. A manifold 104 is fixedly installed at the end of the input pipe 103 away from the main body 102. A filter mechanism 2 for filtering flue gas from the input steam is fixedly installed at the end of the manifold 104 away from the input pipe 103. Specifically, the processing medium steam first enters the filter mechanism 2 for flue gas filtration. After filtration, the steam exits the filter mechanism 2, passes through the input pipe 103, and enters the main body 102 through its input end to heat the cold water inside. After heating, the hot water inside the main body 102 is discharged through the hot water output end at the bottom of the main body 102 into a storage tank. The steam that has lost heat also enters other pre-designed pipes for recycling through the exhaust gas output end at the bottom of the main body 102.

[0021] Please see Figures 1-2 The working line 1 includes an outer protective layer 101, which is fixedly installed on the outer layer of the main body 102. The outer protective layer 101 is fixedly installed on the outer layer of the main body 102 to protect the inner outer protective layer 101, preventing the structure of the outer protective layer 101 from deforming due to external forces.

[0022] Please see Figure 2 The filter mechanism 2 includes a protective shell 202, which is fixedly installed at the output end of the manifold 104 away from the input pipe 103. A flow meter 201 is fixedly installed on the outer layer of the manifold 104 near the protective shell 202. A disassembly layer 203 is fixedly installed at the lower end of the protective shell 202, and a three-way valve 204 is fixedly installed at the input end of the protective shell 202. Steam enters the protective shell 202 and the disassembly layer 203 through the three-way valve 204 to filter dust. After filtration, it enters the manifold 104 from the output end. The flow meter 201 detects the steam in the manifold 104. When the flow meter 201 detects a slowdown in the steam flow rate inside the manifold 104, it indicates that the metal fiber filter screen is blocked. The electronically controlled three-way valve 204 diverts the steam, allowing workers to clean it by simply opening the protective shell 202 and the disassembly layer 203.

[0023] Please see Figure 4 A secondary filter 205 is fixedly installed at the internal output outlet of the protective shell 202, and a primary filter 206 is fixedly installed at the internal input inlet of the protective shell 202. Both the secondary filter 205 and the primary filter 206 are metal fiber filters. The primary filter 206 filters the steam that just enters the protective shell 202 and the disassembly layer 203, trapping the smoke and dust. When smoke or dust accidentally enters the protective shell 202 and the disassembly layer 203, the secondary filter 205 intercepts it. When it is necessary to replace the secondary filter 205 and the primary filter 206, simply open the disassembly layer 203, remove the secondary filter 205 and the primary filter 206, take out the new secondary filter 205 and the primary filter 206, insert them along the gaps in the disassembly layer 203, and then close the disassembly layer 203.

[0024] Please see Figures 2-3 A bend 105 is fixedly installed on the protruding part of the manifold 104. The end of the bend 105 away from the manifold 104 is fixedly installed on the output end of the emergency filter disassembly layer 203. A guide pipe 106 is fixedly installed on the input end of the emergency filter disassembly layer 203. The end of the guide pipe 106 away from the emergency filter disassembly layer 203 is fixedly installed on the protruding part of the three-way valve 204. When the flow meter 201 detects that the flow rate inside the manifold 104 has slowed down, it indicates that the main filter mechanism 2 is blocked. The electronically controlled three-way valve 204 will redirect the flow to the emergency channel, i.e., the guide pipe 106. Steam enters the emergency filter mechanism 2 through the guide pipe 106. After filtration, the steam enters the input pipe 103 through the bend 105 at the output end of the emergency filter mechanism 2.

[0025] Please see Figure 2 An air inlet pipe 107 is fixedly installed at the input end of the three-way valve 204. The processing medium steam is guided into the three-way valve 204 through the air inlet pipe 107.

[0026] Working principle: The processing medium vapor enters the three-way valve 204 through the inlet pipe 107. Under normal conditions, the three-way valve 204 will introduce the vapor into the input end of the protective shell 202 of the main channel. At this time, the protective shell 202 and the disassembly layer 203 are closed. The primary filter 206 at the input end of the protective shell 202 will filter the vapor for dust. The secondary filter 205 at the output end of the protective shell 202 will filter any accidentally entered dust. After the vapor is filtered, it will enter the input end of the main body 102 through the manifold 104 and the input pipe 103 at the output end of the protective shell 202 to process the cold water inside the main body 102. After processing, the vapor will enter the exhaust gas treatment area through the exhaust gas channel at the bottom of the main body 102.

[0027] When the flow meter 201 on the manifold 104 detects that the steam flow rate inside the manifold 104 has slowed down, it will control the three-way valve 204 to guide the steam to the emergency filter. For the blockage, simply open the disassembly layer 203 to replace the primary filter 206 and the secondary filter 205, and then close the disassembly layer 203.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A condensing boiler capable of filtering flue gas, comprising a working line (1), characterized in that: The working line (1) includes a main body (102), an input pipe (103) is fixedly installed at the steam input end of the main body (102), a manifold (104) is fixedly installed at the end of the input pipe (103) away from the main body (102), and a filter mechanism (2) for filtering the input steam is fixedly installed at the end of the manifold (104) away from the input pipe (103).

2. A condensing boiler capable of filtering flue gas and dust according to claim 1, characterized in that: The working line (1) includes an outer protective layer (101), which is fixedly installed on the outer layer of the main body (102).

3. A condensing boiler capable of filtering flue gas and dust according to claim 1, characterized in that: The filter mechanism (2) includes a protective shell (202), which is fixedly installed at the output end of the manifold (104) away from the input pipe (103). A flow meter (201) is fixedly installed on the outer layer of the manifold (104) near the protective shell (202). Meanwhile, a disassembly layer (203) is fixedly installed at the lower end of the protective shell (202), and a three-way valve (204) is fixedly installed at the input end of the protective shell (202).

4. A condensing boiler capable of filtering flue gas according to claim 3, characterized in that: A secondary filter (205) is fixedly installed at the internal output outlet of the protective shell (202), and a primary filter (206) is fixedly installed at the internal input inlet of the protective shell (202).

5. A condensing boiler capable of filtering flue gas and dust according to claim 1, characterized in that: A bend (105) is fixedly installed on the protruding part of the manifold (104). The end of the bend (105) away from the manifold (104) is fixedly installed on the output end of the emergency filter disassembly layer (203). An air guide pipe (106) is fixedly installed on the input end of the emergency filter disassembly layer (203). The end of the air guide pipe (106) away from the emergency filter disassembly layer (203) is fixedly installed on the protruding part of the three-way valve (204).

6. A condensing boiler capable of filtering flue gas and dust according to claim 5, characterized in that: An air inlet pipe (107) is fixedly installed at the input end of the three-way valve (204).

Citation Information

Patent Citations

  • Low-noise mixed low-nitrogen condensing boiler

    CN219199232U