Heat recovery device of cooking range

By installing a stainless steel filter screen in the heat recovery device of the stove, impurities in the flue gas are filtered out, solving the problem of reduced heat recovery efficiency caused by impurity deposition and achieving a highly efficient heat recovery effect.

CN224003746UActive Publication Date: 2026-03-17ZHEJIANG MAN KITCHEN ENERGY SAVING TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-17
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

When using existing stove heat recovery devices, impurities in the flue gas tend to accumulate on the surface of the heat exchange tubes, resulting in reduced heat recovery efficiency.

Method used

A filter screen is installed below the spiral metal tube. The filter screen, made of stainless steel, filters out impurities in the flue gas and prevents them from adhering to the heat recovery device. The filter screen blocks and captures impurities in the flue gas through its physical structure.

Benefits of technology

This improved heat recovery efficiency, ensured the effectiveness of heat recovery, and maintained the high-efficiency operation of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The heat recovery device comprises a cooking bench and the cooking range, a wall surface is arranged on the rear side of the upper end of the cooking bench, a flue is fixedly installed at the front end of the wall surface, a spiral metal pipe is arranged in an inner cavity of the flue, a water inlet pipe is fixedly installed at the left end of the flue and communicated with the spiral metal pipe, and a water outlet pipe is fixedly installed at the right end of the flue and communicated with the spiral metal pipe. And a water outlet end is arranged at the right end of the spiral metal pipe. The problem that the heat recovery efficiency is reduced due to impurities in flue gas is solved. According to the technical scheme, the heat recovery device of the cooking range is provided. Impurities in flue gas are filtered by the filter screen, and the filter screen can prevent the impurities from being attached to the heat recovery device, so that efficient operation of equipment is kept. Therefore, the heat recovery efficiency is improved, and the heat recovery effect is guaranteed.
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Description

Technical Field

[0001] This utility model relates to a heat recovery device for a stove, and more specifically, to a heat recovery apparatus for a stove. Background Technology

[0002] A stove heat recovery device can be defined as: a device installed on or around a stove, designed to recover and reuse the heat generated during the stove's use. Through specific technologies and designs, this device can capture the waste heat released during stove combustion and convert it into usable thermal energy, thereby improving energy efficiency and reducing energy waste.

[0003] Existing stove heat recovery devices contain dust and other impurities in the flue gas during use. These impurities are easily deposited on the surface of the heat exchange tubes, reducing heat recovery efficiency and thus affecting the heat recovery effect.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a heat recovery device for stoves. This device uses a filter to remove impurities from the flue gas, preventing these impurities from adhering to the heat recovery device and thus maintaining its efficient operation. This helps improve heat recovery efficiency and ensures effective heat recovery.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a heat recovery device for a stove, including a stove platform and a stove, a wall is provided on the upper rear side of the stove platform, a flue is fixedly installed on the front end of the wall, a spiral metal tube is provided in the inner cavity of the flue, a water inlet pipe is fixedly installed on the left end of the flue and connected to the spiral metal tube, a water outlet is provided on the right end of the spiral metal tube, a filter screen is movably arranged in the middle of the inner cavity of the flue, a baffle is fixedly installed on the right end of the filter screen, the filter screen is located below the spiral metal tube, and a smoke exhaust pipe is fixedly installed on the upper end of the flue.

[0007] The present invention is further configured such that a fan is provided in the lower part of the inner cavity of the flue.

[0008] The present invention is further configured such that: two fixing blocks are fixedly installed on the left wall of the inner cavity of the flue, and the filter screen is movably connected to the fixing blocks.

[0009] The present invention is further configured such that a lever is fixedly installed on the right end of the baffle.

[0010] The present invention is further configured such that the flue is located above the stove.

[0011] In summary, this utility model has the following beneficial effects:

[0012] 1. A filter screen, made of stainless steel, is installed below the spiral metal tube. This screen boasts excellent corrosion resistance and high-temperature resistance, allowing it to withstand the impact of high-temperature flue gas while remaining resistant to rust and deformation. The filter screen works primarily based on its physical structure's ability to block and capture impurities in the flue gas. When flue gas passes through the filter screen, impurities (such as particulate matter and dust) are captured by the pores or fibers on the screen's surface. The clean flue gas then continues through the flue into the heat recovery device. By filtering out impurities from the flue gas, the filter screen prevents these impurities from adhering to the heat recovery device, thus maintaining the equipment's high efficiency. This helps improve heat recovery efficiency and ensures effective heat recovery. 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 internal three-dimensional structure of the flue of this utility model;

[0015] Figure 3 This is a top view of the flue structure of this utility model.

[0016] In the picture: 1. Stovetop; 2. Stove; 3. Wall; 4. Flue; 5. Spiral metal pipe; 6. Water inlet pipe; 7. Water outlet; 8. Filter screen; 9. Baffle; 10. Exhaust pipe; 11. Fan; 12. Fixing block; 13. Lever. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0018] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "set up / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The present invention will now be described in detail with reference to the accompanying drawings.

[0021] A heat recovery device for a stove, such as Figures 1 to 3 As shown, the system includes a stove 1 and a stove 2. A wall 3 is provided on the upper rear side of the stove 1. A flue 4 is fixedly installed on the front end of the wall 3. The flue 4 is located above the stove 2. A spiral metal pipe 5 is installed inside the flue 4. A water inlet pipe 6 is fixedly installed on the left end of the flue 4 and is connected to the spiral metal pipe 5. A water outlet 7 is provided on the right end of the spiral metal pipe 5. A filter screen 8 is movably installed in the middle of the inner cavity of the flue 4. A baffle 9 is fixedly installed on the right end of the filter screen 8. The filter screen 8 is located below the spiral metal pipe 5. An exhaust pipe 10 is fixedly installed on the upper end of the flue 4. The exhaust pipe 10 discharges the flue gas after heat recovery.

[0022] like Figure 3 As shown, a fan 11 is installed in the lower part of the inner cavity of the flue 4. The fan 11 serves to draw air and ensure that the high-temperature flue gas generated by the stove 2 can flow smoothly and recover heat through the flue 4.

[0023] like Figure 2 As shown, two fixing blocks 12 are fixedly installed on the left wall of the inner cavity of the flue 4. The filter screen 8 is movably attached to the fixing blocks 12, and the fixing blocks 12 provide support for the filter screen 8.

[0024] A lever 13 is fixedly installed on the right end of the baffle 9. When the lever 13 is moved to the right, the filter screen 8 can be disassembled, cleaned, or replaced to ensure that the filter screen 8 can effectively treat impurities in the flue gas.

[0025] Working principle: Cold water enters the spiral metal tube 5 through the water inlet pipe 6. The fan 11 is connected to an external power source and is in the on state. When the fan 11 rotates, it guides the high-temperature flue gas generated by the stove 2 into the flue 4. During the flow of flue gas, its heat is absorbed by the water in the spiral metal tube 5. The spiral metal tube 5, together with the cold water inside, exchanges heat with the high-temperature flue gas, thus recovering the heat generated by the high-temperature flue gas. The heated water flows out from the water outlet 7 of the spiral metal tube 5. A filter screen 8 is installed below the spiral metal tube 5. The filter screen 8 is made of stainless steel, which has excellent corrosion resistance and high temperature resistance. It can withstand the impact of high-temperature flue gas and is not easy to rust or deform. The working principle of the filter screen 8 is mainly based on its physical structure to block and capture impurities in the flue gas. When flue gas passes through filter screen 8, impurities (such as particulate matter and dust) are captured by the pores or fibers on the surface of filter screen 8, while the clean flue gas continues to enter the heat recovery device through flue 4. By filtering out impurities in the flue gas, filter screen 8 can prevent these impurities from adhering to the heat recovery device, thereby maintaining the efficient operation of the equipment. This helps to improve heat recovery efficiency and ensure the heat recovery effect.

[0026] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A heat recovery device for a cooking range, comprising a hob (1) and a cooking range (2), characterized in that: The upper end rear side of the cooking bench (1) is provided with a wall surface (3), the front end of the wall surface (3) is fixedly provided with a flue (4), the inner cavity of the flue (4) is provided with a spiral metal pipe (5), the left end of the flue (4) is fixedly provided with a water inlet pipe (6), the water inlet pipe (6) is communicated with the spiral metal pipe (5), the right end of the spiral metal pipe (5) is provided with a water outlet end (7), the inner cavity of the flue (4) is movably provided with a filter screen (8) in the middle, the right end of the filter screen (8) is fixedly provided with a baffle (9), the filter screen (8) is below the spiral metal pipe (5), and the upper end of the flue (4) is fixedly provided with a smoke exhaust pipe (10).

2. A heat recovery device for a cooking appliance as claimed in claim 1, wherein: The inner cavity of the flue (4) is provided with a fan (11) in the lower part.

3. A heat recovery device for a cooking appliance as claimed in claim 1, wherein: The left wall of the inner cavity of the flue (4) is fixedly provided with two fixed blocks (12), and the filter screen (8) is movably overlapped on the fixed blocks (12).

4. A heat recovery device for a cooking appliance as claimed in claim 1, wherein: The right end of the baffle (9) is fixedly provided with a push rod (13).

5. A heat recovery device for a cooking appliance as claimed in claim 1, wherein: The flue (4) is above the stove (2).