CN220870906U

CN220870906U - External economizer system of hanging stove and hanging stove

Info

Publication number: CN220870906U
Application number: CN202322579074.2U
Authority: CN
Inventors: 王丹; 王永一; 杜顺洪
Original assignee: Sichuan Tongyi Thermal Equipment Co ltd
Current assignee: Sichuan Tongyi Thermal Equipment Co ltd
Priority date: 2023-09-21
Filing date: 2023-09-21
Publication date: 2024-04-30
Anticipated expiration: 2033-09-21

Abstract

The utility model provides an external energy-saving system of a wall-mounted furnace and the wall-mounted furnace. The heat exchange box is also internally provided with an air channel for flue gas circulation. The heat exchanger is arranged in the air duct, so that the flue gas needs to be discharged out of the heat exchange box through the heat exchanger after entering the heat exchange box. The heat exchanger comprises a plurality of heat exchange areas. The air duct is arranged in an S shape, so that different areas of the air duct are connected with different heat exchange areas of the heat exchanger. When the wall-mounted boiler is used, the air inlet of the heat exchange box is connected to the smoke outlet of the wall-mounted boiler or the water heater, so that smoke of the wall-mounted boiler enters the heat exchange box. The flue gas in the heat exchange box flows through the air duct and then exchanges heat through the heat exchanger. The heat exchanger can be connected to the water return pipe of the wall-mounted boiler, so that water in the water return pipe is preheated by waste heat of flue gas. And the preheated backwater enters the wall-mounted furnace for heating. In this way, the waste heat of the flue gas can be recovered.

Description

External economizer system of hanging stove and hanging stove

Technical Field

The utility model relates to the technical field of wall-mounted furnaces, in particular to an external energy-saving system of a wall-mounted furnace and the wall-mounted furnace.

Background

The gas wall-mounted stove has a powerful household central heating function, can meet the heating requirements of multiple rooms, and can also give consideration to the hot water bathing function. The smoke of the wall hanging stove still has higher temperature when being discharged. In order to better utilize waste heat in flue gas, mechanisms for recycling waste heat of flue gas are provided in the prior art. But these mechanisms do not provide good cooling of the flue gas.

Disclosure of utility model

The utility model aims to provide an external energy-saving system of a wall-mounted furnace and the wall-mounted furnace, which can more effectively absorb the waste heat of flue gas.

The embodiment of the utility model is realized by the following technical scheme:

An external energy-saving system of a wall-mounted furnace and the wall-mounted furnace comprise a heat exchange box and a heat exchanger arranged in the heat exchange box; an air duct for circulating flue gas is also arranged in the heat exchange box; the heat exchanger is arranged in the air duct, so that the flue gas needs to be discharged out of the heat exchange box through the heat exchanger after entering the heat exchange box; the heat exchanger comprises a plurality of heat exchange areas; the air duct is arranged in an S shape, so that different areas of the air duct are connected with different heat exchange areas of the heat exchanger.

Further, the heat exchanger comprises a plurality of fins; the heat exchange box is internally matched with the fins and is provided with a plurality of clapboards, so that the fins and the clapboards are matched to form the air duct.

Further, a water collecting tank is arranged below the heat exchanger of the heat exchange box.

Further, the sump opening is directed towards the heat exchanger; a funnel-shaped water collecting bucket is arranged at the opening of the water collecting tank; the bottom of the water collecting bucket is provided with a through hole communicated with the inside of the water collecting tank.

Further, a water collecting bucket is arranged at the lower part of each heat exchange area; the top of the water collecting bucket is abutted against the fins of the heat exchanger.

Further, the water collecting tank is communicated with the exhaust port of the heat exchange box through a pipeline.

Further, the pipeline is also provided with a water pump.

Further, the exhaust port is a venturi; the pipe is communicated with the throat part of the venturi tube.

A wall-mounted furnace comprises the external energy-saving system of the wall-mounted furnace; the air inlet of the heat exchange box is connected with the smoke outlet of the wall-mounted furnace; the heat exchanger is connected into the water return pipe of the wall-mounted furnace.

The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:

When the external energy-saving system of the wall-mounted furnace is used, the air inlet of the heat exchange box is connected with the smoke outlet of the wall-mounted furnace or the water heater, so that smoke of the wall-mounted furnace enters the heat exchange box. The flue gas in the heat exchange box flows through the air duct and then exchanges heat through the heat exchanger. The heat exchanger can be connected to the water return pipe of the wall-mounted boiler, so that water in the water return pipe is preheated by waste heat of flue gas. And the preheated backwater enters the wall-mounted furnace for heating. The waste heat of the flue gas can be recovered through the mode, and the energy consumption is further reduced.

In addition, the air duct is arranged in an S shape, and different areas of the air duct are connected with different heat exchange areas of the heat exchanger. That is, the flue gas can be discharged from the exhaust port of the heat exchange box after repeatedly passing through the heat exchanger. And then make the contact of flue gas and heat exchanger more abundant, waste heat recovery is more thorough.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an external energy saving system in front view;

FIG. 2 is a schematic top view of an external energy saving system;

Fig. 3 is an enlarged view at a in fig. 1.

Icon: the heat exchange device comprises a heat exchange box 1, an exhaust port 11, a venturi tube 12, a heat exchanger 2, fins 21, an air duct 3, a partition plate 4, a water collecting tank 5, a water collecting bucket 51 and a through hole 52.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which a product of the application is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1:

As shown in fig. 1-3, the utility model provides an external energy-saving system of a wall-mounted boiler and the wall-mounted boiler, which comprise a heat exchange box 1 and a heat exchanger 2 arranged in the heat exchange box 1. The heat exchange box 1 is also internally provided with an air duct 3 for the flue gas to circulate. Specifically, a plurality of partition boards 4 are arranged inside the heat exchange box 1, so that channels are formed among the partition boards 4, and the channels are the air channels 3. The heat exchanger 2 is arranged in the air duct 3, so that the flue gas needs to be discharged out of the heat exchange box 1 through the heat exchanger 2 after entering the heat exchange box 1. The heat exchanger 2 comprises several heat exchange zones. The air duct 3 is arranged in an S shape, so that different areas of the air duct 3 are connected with different heat exchange areas of the heat exchanger 2. Specifically, the air duct 3 is distributed in an S shape inside the heat exchange box 1. And the position where the heat exchanger 2 is placed is reserved in the heat exchange box 1. The heat exchanger 2 is a fin 21 type heat exchanger 2 provided with a plurality of fins 21. After the heat exchanger 2 is placed inside the heat exchange box 1, part of the fins 21 are butted with the partition plate 4. A plurality of fins 21 are arranged between the two fins 21 which are butted by the baffle plates 4 at the two sides of the air duct 3, and the area where the fins 21 are positioned is the heat exchange area. That is, the fins 21 between the two fins 21 are located inside the air duct 3. The heat exchanger 2 is divided into several heat exchange areas along the direction in which the fins 21 are distributed, each heat exchange area corresponding to a different part of the entire air duct 3. That is, when the flue gas enters the air duct 3, the flue gas flows along the air duct 3, and then sequentially passes through different heat exchange areas of the heat exchanger 2 and exchanges heat with water inside the heat exchanger 2.

When the external energy-saving system of the wall-mounted furnace is used, the air inlet of the heat exchange box 1 is connected with the smoke outlet of the wall-mounted furnace or the water heater, so that smoke of the wall-mounted furnace enters the heat exchange box 1. The flue gas in the heat exchange box 1 flows through the air duct 3 and then exchanges heat through the heat exchanger 2. The heat exchanger 2 can be connected to the water return pipe of the wall-mounted boiler, so that water in the water return pipe is preheated by waste heat of flue gas. And the preheated backwater enters the wall-mounted furnace for heating. The waste heat of the flue gas can be recovered through the mode, and the energy consumption is further reduced.

In addition, the air duct 3 is arranged in an S shape, and different areas of the air duct 3 are connected with different heat exchange areas of the heat exchanger 2. That is, the flue gas can be discharged from the exhaust port 11 of the heat exchange box 1 after repeatedly passing through the heat exchanger 2. And then the contact of flue gas and the heat exchanger 2 is more abundant, and waste heat recovery is more thorough.

In this embodiment, the heat exchange tank 1 is provided with a water collection tank 5 below the heat exchanger 2. The water collection sump 5 is capable of collecting condensed water on the heat exchanger 2. In practice, wall-hanging furnaces typically use natural gas, which generates a large amount of water vapor after combustion. These water vapour are liquefied following the flue gas being cooled at the heat exchanger 2. Further, water droplets are formed on the fins 21. These droplets drop down into the sump 5 and can be collected and treated in a unified manner. Effectively avoid leaking water.

In this embodiment the sump 5 is open towards the heat exchanger 2, i.e. the sump 5 is open upwards. The opening of the water collection tank 5 is provided with a funnel-shaped water collection bucket 51. The bottom of the water collection bucket 51 is provided with a through hole 52 communicated with the inside of the water collection tank 5. The water on the fin 21 falls into the water collecting bucket 51 firstly, and then flows into the water accumulating tank through the through hole 52 at the bottom of the water collecting bucket 51. The header 51 separates the header tank 5 from the heat exchanger 2 so that the high temperature air flow passing through the heat exchanger 2 cannot directly contact the water in the water accumulation, but only a small amount of hot air can enter the header tank 5 through the through holes 52. This avoids the hot gas at the heat exchanger 2 to heat the water in the water collection tank 5 again to evaporate, and reduces the waste of heat.

In this embodiment, a water collection bucket 51 is provided at the lower portion of each heat exchange zone. The top of the header 51 abuts the fins 21 of the heat exchanger 2. This allows the individual heat exchange zones to be separated from each other underneath, avoiding the flow of hot gas from underneath the heat exchanger 2 between several heat exchange zones. So that the contact between the flue gas and the heat exchanger 2 is more sufficient, and the waste heat recovery is more thorough.

In this embodiment, the water collection sump 5 is connected to the exhaust port 11 of the heat exchange tank 1 through a pipe. That is, the water in the water collecting tank 5 is transported to the exhaust port 11 through the pipe, and is discharged from the exhaust port 11 with the flue gas. This also eliminates the need for a drainage mechanism, and is simpler in construction. And the leakage of condensed water from the wall-mounted boiler is avoided.

In this embodiment, the pipe is further provided with a water pump. The water can be effectively conveyed to the exhaust port 11 through the water pump, so that the reliability of water drainage is guaranteed.

Example 2:

In this embodiment is an alternative to embodiment 1. The procedure of example 1 was repeated except for the following differences. In this embodiment, the exhaust port 11 is a venturi 12. The conduit communicates with the throat of the venturi 12. As the flue gas passes through the throat, its flow velocity increases, which in turn causes the pressure to also decrease. The flue gas needs to pass through a plurality of fins 21 when the flue gas is in the heat exchange box 1, the flue gas has resistance, and the pressure is also larger than the pressure at the exhaust port 11. These cause the accumulated water in the water collection tank 5 to be transported to the exhaust port 11 through the pipe under the effect of the pressure difference, and then to be discharged with the flue gas. Through the structure, a water pump is not needed, so that the structure is simpler.

In order to allow water in the water collection tank 5 to be efficiently transferred to the exhaust port 11, the position of the exhaust port 11 is set to be low, and its height is slightly higher than that of the water collection tank 5, as shown in fig. 1.

Example 3:

a wall-mounted furnace comprises the external energy-saving system of the wall-mounted furnace. The air inlet of the heat exchange box 1 is connected with the smoke outlet of the wall-mounted furnace. The heat exchanger 2 is connected into a water return pipe of the wall-mounted furnace. The flue gas generated by the wall-mounted furnace enters the heat exchange box 1, so that backwater is preheated, and the backwater after preheating enters the wall-mounted furnace for heating. So that the heat in the flue gas is effectively absorbed, and the energy waste is avoided.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An external economizer system of hanging stove, its characterized in that: comprises a heat exchange box (1) and a heat exchanger (2) arranged inside the heat exchange box (1); an air duct (3) for circulating flue gas is further arranged in the heat exchange box (1); the heat exchanger (2) is arranged in the air duct (3) so that the flue gas enters the heat exchange box (1) and then is required to be discharged out of the heat exchange box (1) through the heat exchanger (2); the heat exchanger (2) comprises a plurality of heat exchange areas; the air duct (3) is arranged in an S shape, so that different areas of the air duct (3) are connected with different heat exchange areas of the heat exchanger (2).

2. The external energy saving system of a wall-mounted boiler as set forth in claim 1, wherein: the heat exchanger (2) comprises a plurality of fins (21); the heat exchange box (1) is internally matched with the fins (21) and provided with a plurality of clapboards (4), so that the fins (21) and the clapboards (4) are matched to form the air duct (3).

3. The external energy saving system of a wall-mounted boiler according to claim 2, wherein: the heat exchange box (1) is provided with a water collecting tank (5) below the heat exchanger (2).

4. The external energy saving system of a wall-mounted boiler according to claim 3, wherein: the water collection tank (5) opening points to the heat exchanger (2); a funnel-shaped water collecting bucket (51) is arranged at the opening of the water collecting tank (5); the bottom of the water collecting bucket (51) is provided with a through hole (52) communicated with the inside of the water collecting tank (5).

5. The external energy saving system of a wall-mounted boiler as set forth in claim 4, wherein: a water collecting bucket (51) is arranged at the lower part of each heat exchange area; the top of the water collecting bucket (51) is abutted against the fins (21) of the heat exchanger (2).

6. The external energy saving system of a wall-mounted boiler as set forth in claim 5, wherein: the water collecting tank (5) is communicated with an exhaust port (11) of the heat exchange box (1) through a pipeline.

7. The external energy saving system of a wall-mounted boiler as set forth in claim 6, wherein: the pipeline is also provided with a water pump.

8. The external energy saving system of a wall-mounted boiler as set forth in claim 6, wherein: the exhaust port (11) is a venturi tube (12); the conduit communicates with the throat of the venturi (12).

9. A hanging stove, its characterized in that: an external energy saving system comprising the wall-mounted boiler of any one of claims 1-8; an air inlet of the heat exchange box (1) is connected to a smoke outlet of the wall-mounted furnace; the heat exchanger (2) is connected into a water return pipe of the wall-mounted furnace.