CN110686267A - Filtration system and gas hanging stove - Google Patents

Abstract

The invention belongs to the technical field of gas wall-hung boilers, and discloses a filtering system and a gas wall-hung boiler. Wherein, the filtering system includes an air intake and smoke exhaust device, an air pipe and a filtering device. The air intake and exhaust device is used to introduce air into the gas wall-hung furnace and export the flue gas from the gas wall-hung furnace. One end of the air pipe is connected to the intake and exhaust device, and the filter device is installed on the gas wall-hung furnace to connect the air pipe The other end of the fan and the air inlet of the fan are provided with an operation port corresponding to the filter device on the chassis. Wherein, the gas wall-hung boiler includes the above filtering system. In the present invention, by setting the filter device, the outdoor air with impurities such as dust can be filtered and dedusted after passing through the air intake and exhaust device and the air pipe before entering the fan. On this basis, the setting of the operation port makes the Users can easily open the filter device from the outside of the cabinet or remove the filter device from the gas wall-hung boiler for cleaning and maintenance.

Description

A filter system and gas wall-hung boiler

technical field

The invention relates to the technical field of gas wall-hung boilers, in particular to a filtering system and a gas wall-hung boiler.

Background technique

The gas wall-hung boiler is a device that relies on natural gas to provide hot water and heating heat. The air required for the combustion of the natural gas is taken from the outside, and the flue gas generated after the combustion of the natural gas is discharged to the outside.

Because the outdoor air quality is not up to standard, the gas wall-hung boiler inhales air with a large amount of dust and other impurities through the fan during operation, and the air with a large amount of dust and other impurities is mixed with the gas and then enters the combustion chamber, and passes through the burner nozzle. Small, dust and other impurities can easily cause nozzle blockage after long-term operation. In addition, impurities such as dust are mixed into the flue gas after combustion and enter the heat exchanger. Due to the small gap between the internal components of the heat exchanger, it is easy to cause the problem of ash blocking, which further affects the emission of flue gas, resulting in reduced heat exchange efficiency or even damage to the heat exchanger.

In order to solve this problem, the existing gas wall-hung boiler usually adopts the method of adding a filter screen on the fan to prevent dust and other impurities in the air from entering the fan and heat exchanger. Dust and other impurities accumulate in the gas wall-hung boiler, which is not conducive to the cleaning and elimination of dust.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a filter system that can filter impurities such as dust in the air, and is easy to clean and maintain.

Another object of the present invention is to provide a gas wall-hung boiler, which can filter impurities such as dust in the air, and is easy to clean and maintain.

For this purpose, the present invention adopts the following technical solutions:

A filtration system comprising:

an air intake and exhaust device for introducing air into the gas wall-hung boiler and exporting flue gas from the gas wall-hung boiler;

an air pipe, one end of which is connected to the air intake and smoke exhaust device;

The filter device is installed on the casing of the gas wall-hung boiler and is used for connecting the other end of the air pipe with the air inlet of the fan, and the casing is provided with an operation port corresponding to the filter device.

Preferably, the filtering device includes a filter box and a filter screen;

The filter box is installed on the chassis, the filter screen is detachably installed in the filter box, the communication port between the air pipe and the filter box and the communication port between the fan and the filter box are located on both sides of the filter screen respectively.

Preferably, the communication port between the air pipe and the filter box is lower than the communication port between the fan and the filter box.

Preferably, the filtering device is detachably mounted on the bottom, side or top of the cabinet.

Preferably, the air intake and smoke exhaust device includes:

The air supply and exhaust box is provided with an air inlet, an air outlet, an exhaust inlet and an exhaust outlet, and a horizontally extending through cavity is arranged in the air supply and exhaust box, and the air inlet and the air intake outlet are respectively connected to the through cavity, the exhaust inlet is communicated with the exhaust outlet, one end of the air pipe is communicated with the air intake outlet, and the air outlet of the fan is connected to the air outlet. The exhaust gas inlets are respectively connected to opposite sides of the heat exchanger of the gas wall-hung boiler;

The liquid collecting device is arranged on the air supply and exhaust box and communicates with the through cavity.

Preferably, the air inlet and the air outlet are communicated with the top of the through cavity;

The liquid collecting device is communicated with the bottom of the through cavity.

Preferably, the air inlet is communicated with the top of the through cavity;

The air inlet and the liquid collecting device are respectively communicated with the bottom of the through cavity.

Preferably, the intake inlet and the intake outlet are arranged at intervals in the horizontal direction;

The communication port between the liquid collecting device and the through cavity is an annular port, and the annular port is arranged around the air inlet outlet.

Preferably, a separator is provided at the bottom of the through cavity;

The communication port between the liquid collecting device and the through cavity and the air inlet are located on one side of the partition plate, and the air intake outlet is located on the other side of the partition plate.

Preferably, the intake outlet and the exhaust inlet are located at two ends of the bottom of the air supply and exhaust box, respectively, and the partition plate is located between the intake outlet and the exhaust inlet.

Preferably, the exhaust outlet is located above the exhaust inlet and coincides with the axis of the exhaust inlet.

Preferably, the intake inlet is annular and is arranged around the exhaust outlet.

Preferably, the liquid collecting device includes a funnel joint, and the large-diameter end of the funnel joint is communicated with the through cavity.

In order to achieve another object, the present invention provides a gas-fired wall-hung boiler, including the above-mentioned filtering system.

The beneficial effects of the present invention are as follows: by setting the filter device, the outdoor air with impurities such as dust can be filtered and dedusted before entering the fan after passing through the air intake and exhaust device and the air pipe, so as to prevent impurities such as dust in the air from entering the fan In the heat exchanger, it will affect the normal operation of the gas wall-hung boiler. On this basis, the setting of the operation port allows the user to easily open the filter device from the outside of the chassis or remove the filter device from the gas wall-hung boiler for cleaning and maintenance. In addition, the arrangement of the air pipe can effectively reduce the sealing surface of the gas wall-hung boiler and reduce the manufacturing cost of the equipment, so that the filter device can make full use of the pressure of the fan to filter the air.

Description of drawings

FIG. 1 is a schematic structural diagram of the cooperation of the filter system according to the embodiment of the present invention and the gas-fired wall-hung boiler;

2 is a schematic structural diagram of a filtering system according to an embodiment of the present invention;

3 is a partial cross-sectional view of the air intake and smoke exhaust device according to the embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along the line A-A in FIG. 3 .

In the picture:

100, fan; 200, heat exchanger; 300, three-way valve; 400, water pump;

1. Intake and exhaust device; 11. Supply and exhaust box; 111, Inlet inlet; 112, Inlet outlet; 113, Exhaust inlet; 114, Exhaust outlet; 115, Through cavity; 116, Partition plate; 12 , liquid collection device;

2. Air pipe;

3. Filtering device; 31. Filter box; 32. Filter screen.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

The technical solutions of the present invention are further described below with reference to the accompanying drawings and through specific embodiments.

As shown in FIG. 1-FIG. 4 , the present invention provides a filtering system, including an intake and smoke exhaust device 1 , an air pipe 2 and a filtering device 3 . Among them, the air intake and exhaust device 1 is used to introduce air into the gas wall-hung boiler, and export the flue gas from the gas wall-hung furnace. The case is used to communicate the other end of the air pipe 2 with the air inlet of the fan 100, and an operation port corresponding to the filter device 3 is provided on the case (not shown in the figure).

In the present invention, by setting the filter device 3, the outdoor air with impurities such as dust can be filtered and dedusted before entering the fan 100 after passing through the air intake and exhaust device 1 and the air pipe 2, so as to avoid impurities such as dust in the air. Entering the fan 100 and the heat exchanger 200 will affect the normal operation of the gas wall-hung boiler. On this basis, the setting of the operation port enables the user to easily open the filter device 3 from the outside of the chassis or remove the filter device 3 from the gas wall-hung boiler. It is removed for cleaning and maintenance, and the arrangement of the air pipe 2 can effectively reduce the sealing surface of the gas wall-hung boiler and reduce the manufacturing cost of the equipment, so that the filter device 3 can make full use of the pressure of the fan 100 to filter the air.

Specifically, the filter device 3 includes a filter box 31 and a filter screen 32 . Among them, the filter box 31 is installed on the chassis (it can be fixedly installed or detachably installed), the filter screen 32 is detachably installed in the filter box 31, the communication port between the air pipe 2 and the filter box 31 and the fan 100 and the filter The communication ports of the box 31 are located on both sides of the filter screen 32, respectively. The detachable arrangement of the above-mentioned filter screen 32 enables the user to conveniently replace or clean the filter screen 32 without removing the filter box 31 .

More specifically, the communication port between the air pipe 2 and the filter box 31 is lower than the communication port between the fan 100 and the filter box 31 . The above arrangement enables impurities such as dust in the air to be filtered by the filter screen 32 more safely and reliably.

In this embodiment, the filter device 3 is detachably installed on the bottom plate of the gas wall-hung boiler chassis. When cleaning and maintenance are required, the filter box 31 can be opened on the bottom plate to remove dust. Besides, the filter device 3 can also be installed on the side or top of the cabinet.

In this embodiment, the air intake and smoke exhaust device 1 includes an air intake and exhaust box 11 and a liquid collection device 12 . The air supply and exhaust box 11 is provided with an intake inlet 111, an intake outlet 112, an exhaust inlet 113 and an exhaust outlet 114, and a horizontally extending through cavity 115 is arranged in the air supply and exhaust box 11. The intake inlet 111 and The air inlet 112 is connected to the through cavity 115 respectively, the air inlet 113 is connected to the air outlet 114, one end of the air pipe 2 is connected to the air inlet 112, the air outlet and the air outlet 113 of the fan 100 are respectively connected to the gas wall-hung boiler opposite sides of the heat exchanger 200 . The liquid collecting device 12 is arranged on the air supply and exhaust box 11 and communicates with the through cavity 115 .

In the present invention, through the cooperative arrangement of the air supply and exhaust box 11 and the air pipe 2, the outside air can directly enter the fan 100 through the air supply and exhaust box 11, the air pipe 2 and the filter device 3, which effectively reduces the sealing surface and reduces the cost, and the overall structure makes full use of the pressure of the fan 100, while forcibly discharging the flue gas, a negative pressure is formed on the other side of the fan 100 to extract the outdoor air, and the extracted air is mixed with the gas under the action of pressure. While mixing the air-fuel ratio, it ensures that the gas does not leak, optimizes the overall structure of the gas-fired wall-hung boiler, and uses the supply and exhaust box 11 to diversify the functions of the fan 100 to ensure the rationality of the premixing degree and the safety of the gas. On this basis, the horizontally extending through-cavity 115 cooperates with the liquid collection device 12, the through-cavity 115 is used for buffering, and the liquid collection device 12 is used for collection, so as to prevent the liquid such as rainwater mixed in the outside air from entering the filter device 3 and ensure the filtering The safety and reliability of the device 3, and the fan 100 and the exhaust inlet 113 are respectively connected to opposite sides of the heat exchanger 200, compared with the existing structure, the occupied space of the entire filter system is effectively reduced, and the exhaust Air is smoother.

To ensure reliable operation of the liquid collection device 12 , the air inlet 111 and the air inlet 112 may be communicated with the top of the through cavity 115 , and the liquid collection device 12 may be communicated with the bottom of the through cavity 115 . The above arrangement, on the basis of ensuring the smooth entry of air, enables the liquid such as rainwater mixed with the outside air to be safely stored at the bottom of the through cavity 115 and collected by the liquid collection device 12 .

In order to ensure the reliable operation of the liquid collecting device 12, in addition to the above settings, the air inlet 111 may be communicated with the top of the through cavity 115, and the air intake outlet 112 and the liquid collecting device 12 may be communicated with the bottom of the through cavity 115, respectively. The specific structural arrangement ensures that the liquid mixed in the outside air is reliably collected by the liquid collecting device 12 .

The above specific structural arrangement may be that the air inlet 111 and the air outlet 112 are arranged at intervals in the horizontal direction, and the communication port between the liquid collecting device 12 and the through cavity 115 is an annular port, and the annular port is arranged around the air inlet 112 . In the above setting, the annular port is used to safely isolate the air inlet 112, so that the liquid mixed with the outside air flows into the through cavity 115 through the air inlet 111, and before flowing into the air inlet 112, the annular port is safely introduced into the liquid collection device 12. .

In the above-mentioned specific structural arrangement, as shown in FIG. 3 and FIG. 4 , a separator 116 is provided at the bottom of the through-cavity 115 . The communication port of the liquid collecting device 12 and the through cavity 115 and the air inlet 111 are located on one side of the partition plate 116 , and the air intake outlet 112 is located on the other side of the partition plate 116 . The above arrangement allows the liquid mixed with the outside air to flow into the through-cavity 115 through the air inlet 111 , and cannot flow directly to the air inlet 112 due to the blocking by the baffle 116 . , and since the partition plate 116 does not completely block the through-cavity 115 , the air can freely jump over the partition plate 116 and flow to the air pipe 2 through the air intake outlet 112 .

As shown in FIG. 3 and FIG. 4 , the intake outlet 112 and the exhaust inlet 113 are respectively located at both ends of the bottom of the air supply and exhaust box 11 , and the partition plate 116 is located between the intake outlet 112 and the exhaust inlet 113 . The above arrangement makes full use of the structural space of the flat air supply and exhaust box 11 and avoids the interference between the intake outlet 112 and the exhaust inlet 113 when installing and communicating with the external pipeline.

As shown in FIGS. 3 and 4 , the exhaust outlet 114 is located above the exhaust inlet 113 and coincides with the axis of the exhaust inlet 113 . With the above arrangement, the flue gas discharge channel formed by the exhaust inlet 113 and the exhaust outlet 114 vertically penetrates the air supply and exhaust box 11, which ensures the smooth discharge of the flue gas.

As shown in FIGS. 3 and 4 , the intake inlet 111 is annular and disposed around the exhaust outlet 114 . In the above arrangement, the ports for air intake and smoke exhaust are assigned to one end, which occupies a small space and further reduces the sealing surface, and the air inlet 111 and the air outlet 112 are located at both ends of the air supply and exhaust box 11 in the length direction, extending the length of the air inlet. The air intake distance increases the action time of the liquid collection device 12, and prevents the liquid collection device 12 from being unable to perform the liquid collection function if the air intake distance is too short.

As shown in FIG. 3 and FIG. 4 , the liquid collecting device 12 includes a funnel joint. The large diameter end of the funnel joint is connected to the through cavity 115 , and the small diameter end is connected to the outlet pipeline (not shown in the figure). In actual use, the liquid collecting device 12 may be other devices that can collect liquid in the air, such as a water-absorbing sponge or a water-absorbing charcoal, in addition to the above-mentioned setting of the funnel joint with an external outlet pipeline. The arrangement of the above-mentioned liquid collecting device 12 is simple in structure and low in cost.

The present invention also provides a gas-fired wall-hung boiler, including the above-mentioned filtering system, and specifically, it further includes a three-way valve 300 and a water pump 400 and a water-dividing and water-conducting device.

In the gas wall-hung boiler of the present invention, by setting the filter device 3, the outdoor air with impurities such as dust can be filtered and dedusted before entering the fan 100 after passing through the air intake and exhaust device 1 and the air pipe 2, so as to avoid air pollution. The dust and other impurities enter the fan 100 and the heat exchanger 200, which will affect the normal operation of the gas wall-hung boiler. Remove it from the gas wall-hung boiler for cleaning and maintenance.

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the embodiments of the present invention. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (10)

1. A filtration system, comprising:

an air inlet and smoke exhaust device (1) for introducing air into the wall-mounted gas boiler and for discharging smoke from the wall-mounted gas boiler;

one end of the air pipe (2) is communicated with the air inlet and smoke exhaust device (1);

and the filtering device (3) is installed on the case of the gas wall-mounted furnace and is used for communicating the other end of the air pipe (2) with the air inlet of the fan (100), and an operation opening corresponding to the filtering device (3) is formed in the case.

2. A filtering system according to claim 1, wherein the filtering means (3) comprise a filtering cassette (31) and a filtering screen (32);

the filter box (31) is installed on the case, the filter screen (32) is detachably installed in the filter box (31), and the air pipe (2) is communicated with the filter box (31) and the fan (100) is communicated with the filter box (31) and is respectively positioned on two sides of the filter screen (32).

3. A filtering system according to claim 2, wherein the communication opening of the air duct (2) with the filter cassette (31) is lower than the communication opening of the fan (100) with the filter cassette (31).

4. A filter system according to claim 1, wherein the filter device (3) is detachably mounted to the floor, sides or top of the cabinet.

5. A filter system according to any one of claims 1-4, characterized in that the air intake and smoke exhaust arrangement (1) comprises:

the gas supply and exhaust box (11) is provided with an air inlet (111), an air inlet outlet (112), an exhaust inlet (113) and an exhaust outlet (114), a through cavity (115) extending horizontally is arranged in the air supply and exhaust box (11), the air inlet (111) and the air inlet outlet (112) are respectively communicated with the through cavity (115), the exhaust inlet (113) is communicated with the exhaust outlet (114), one end of the air pipe (2) is communicated with the air inlet outlet (112), and an air outlet of the fan (100) and the exhaust inlet (113) are respectively communicated with two opposite sides of a heat exchanger (200) of the gas wall-hanging stove;

and the liquid collecting device (12) is arranged on the air supply and exhaust box (11) and communicated with the through cavity (115).

6. A filtering system according to claim 5, wherein the inlet (111) and the outlet (112) communicate with the top of the through cavity (115);

the liquid collecting device (12) is communicated with the bottom of the through cavity (115).

7. A filtering system according to claim 5, wherein the air intake inlet (111) communicates with the top of the through cavity (115);

the air inlet and outlet (112) and the liquid collecting device (12) are respectively communicated with the bottom of the through cavity (115).

8. A filter system according to claim 7, wherein the inlet (111) and outlet (112) are horizontally spaced apart;

the communicating opening of the liquid collecting device (12) and the through cavity (115) is an annular opening which is arranged around the air inlet and outlet (112).

9. A filtering system according to claim 7, characterized in that the bottom of the through cavity (115) is provided with a partition (116);

the communication port of the liquid collecting device (12) and the through cavity (115) and the air inlet (111) are positioned on one side of the partition plate (116), and the air outlet (112) is positioned on the other side of the partition plate (116).

10. A gas fired wall hanging stove characterised by comprising a filtration system as claimed in any one of claims 1 to 9.

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