CN211120008U - Condensing type wall-hung boiler and water sealing device - Google Patents

Abstract

The utility model relates to a condensing type wall-hung boiler and a water sealing device. The water sealing device comprises: a main pipe, wherein a first position and a second position are sequentially distributed along the anti-gravity direction on the main pipe; a drainage pipe is connected to the main pipe at the first position. The auxiliary pipeline is connected with the main pipeline at the second position; the first electrode needle and the second electrode needle are arranged in the main pipeline, the second electrode needle is arranged in the auxiliary pipeline, and the first electrode needle is arranged in the auxiliary pipeline. The needle and the second electrode needle communicate with each other when the liquid level in the main circuit reaches the second position. In this way, when the liquid level does not reach the second position, the water flow will not pass through the first electrode and the second electrode at the same time, and the first electrode and the second electrode will not be misdirected when the drainage pipeline is not blocked, and the judgment of the blockage fault is more accurate. .

Description

Condensing type wall-hung boiler and water sealing device

technical field

The utility model relates to the technical field of wall-hung boilers, in particular to a condensing type wall-hung boiler and a water sealing device.

Background technique

Gas heating water heaters, also known as wall-hung boilers, can be divided into conventional wall-hung boilers and condensing wall-hung boilers. The condensing wall-hung boiler uses high temperature flue gas for secondary heat exchange, which improves the heat exchange efficiency of the whole machine and the energy efficiency of the unit. However, the condensed water that follows has also become a problem that needs to be considered and dealt with in the design of condensing wall-hung boilers.

In the condensing type wall-hung boiler structure, the condensed water generated by the secondary heat exchange of the high-temperature flue gas is accumulated in the water sealing device, and can be discharged through the condensed water drain pipe in the water sealing device. However, when the condensed water drain pipe is blocked, the condensed water in the water sealing device cannot be discharged in time, and the condensed water continues to accumulate in the water sealing device. The water pipe is poured back into the furnace, so that the core components such as the fan, proportional valve and burner enter the water, resulting in the failure of the unit. Therefore, it is necessary to set up a fault sensing device. When it is detected that the condensate drain pipe is blocked, it will give an alarm and feedback in time to protect the unit.

Generally, the method of detecting the blockage fault is electrode detection. Specifically, two electrode needles are set at the upper and lower ends of the main pipeline in the water sealing device. When the condensate drain pipe is blocked, the liquid level continues to rise, and the water submerges the two electrode needles and guides them. When it is on, the unit will issue a fault reminder. However, in actual use, when the condensed water flows down the main pipeline, the two electrode needles may be connected in advance. The judgment of the blockage fault is not accurate enough.

Utility model content

Based on this, it is necessary to provide a water sealing device that improves the accuracy of clogging fault judgment.

A water sealing device, comprising:

a main road, wherein the main road is sequentially distributed with a first position and a second position along the direction of anti-gravity;

a drainage pipeline, communicated with the main pipeline at the first position;

an auxiliary line in communication with the main line at the second location; and

a first electrode needle and a second electrode needle, the first electrode needle is arranged in the main pipeline, the second electrode needle is arranged in the auxiliary pipeline, the first electrode needle and the second electrode needle When the liquid level in the main pipeline reaches the second position, they are connected to each other.

In the above-mentioned condensing wall-hung boiler, when the condensed water continuously flows into the main pipeline, if the drainage pipeline is blocked, the liquid level continues to rise, and when it exceeds the first position and reaches the second position farther from the bottom of the main pipeline, the condensed water can overflow. into the auxiliary line. The water sealing device also includes a first electrode needle and a second electrode needle, the first electrode needle is arranged in the main pipeline, the second electrode is arranged in the auxiliary pipeline, and the first electrode needle and the second electrode needle are in the main pipeline. When the level reaches the second position, the first electrode and the second electrode are connected to each other when the drain line is blocked, so that the liquid level of the condensate rises and flows into the auxiliary line. The water flow will not pass through the first electrode and the second electrode at the same time before the liquid level reaches the second position, and will not mislead the first electrode and the second electrode when the drainage pipeline is not blocked. Two electrodes, improve the accuracy of the judgment of the blockage fault by the water sealing device.

In one embodiment, the main pipeline includes an inner pipe and an outer pipe sleeved on the outer periphery of the inner pipe at intervals, the inner pipe has a water inlet end and a water outlet end that communicate with each other, and the outer pipe has a gravity The top and bottom ends of the direction distribution, the first position and the second position are sequentially distributed on the outer tube along the axial direction of the outer tube from the bottom end to the top end;

The water inlet end of the inner pipe protrudes from the top end of the outer pipe, and the water outlet end of the inner pipe extends into the outer pipe and is in a predetermined space with the bottom end of the outer pipe. A gap is left, and the first electrode needle is arranged on the inner wall of the outer tube.

In one of the embodiments, the first electrode needle is located between the first position and the bottom end of the outer tube.

In one of the embodiments, a collection box is further included, the collection box communicates with the auxiliary pipeline, and the collection box has a collection cavity for accommodating the water flow out of the auxiliary pipeline.

In one embodiment, a drain switch is further included, a drain port communicating with the collection cavity is opened on the collection box, the drain switch is provided at the drain port, and closes or opens the drain port.

In one of the embodiments, a controller is further included, and the controller controls the drain switch to be turned off when the first electrode needle and the second electrode needle are turned on.

In one of the embodiments, a liquid level detection mechanism is further included, and the liquid level detection mechanism is used to detect the actual liquid level in the collection box and send it to the controller, and the controller detects the actual liquid level in the actual liquid level. When the actual liquid level exceeds the preset liquid level, the drain switch is controlled to open; when the actual liquid level is lower than the preset liquid level, the controller controls the drain switch to close.

In one of the embodiments, the liquid level detection mechanism includes a third electrode needle and a fourth electrode needle disposed in the collection cavity, and one of the third electrode needle and the fourth electrode needle is disposed At the preset liquid level, the other of the third electrode needle and the fourth electrode needle is arranged below the preset liquid level;

The controller controls the drain switch to open when the third electrode needle and the fourth electrode needle are turned on; the controller controls the drain switch to open when the third electrode needle and the fourth electrode needle are disconnected , control the drain switch to close.

In one of the embodiments, a blockage fault reminder is further included, and the controller controls the blockage fault reminder to turn on when the first electrode needle and the second electrode needle are connected; When the first electrode needle and the second electrode needle are disconnected, the blockage fault reminder is controlled to be turned off.

The utility model also provides a condensing type wall-hung boiler, which includes the above-mentioned water sealing device.

Description of drawings

1 is a schematic structural diagram of the water sealing device in an embodiment of the present invention when the drainage pipeline is not blocked;

FIG. 2 is a schematic structural diagram in a state when the drainage pipeline in the water sealing device shown in FIG. 1 is blocked;

FIG. 3 is a schematic structural diagram of another state when the drainage pipeline of the water sealing device shown in FIG. 2 is blocked.

Detailed ways

In order to facilitate the understanding of the present utility model, the present utility model will be more fully described below with reference to the related drawings. The preferred embodiments of the present utility model are shown in the accompanying drawings. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in FIG. 1 , in an embodiment of the present invention, a water sealing device 100 is provided, which can be applied to a condensing type wall-hung boiler. In the condensing type wall-hung boiler, the flue gas is condensed to recover the heat energy in the flue gas. At the same time, the condensation of the flue gas will produce condensed water, which can be discharged into the water sealing device 100 through the condensed water outlet pipe. The accumulation forms a water seal to prevent the leakage of the internal flue gas, and at the same time, the condensed water can be discharged through the water seal device 100 .

The water sealing device 100 includes a main pipeline 10, a drainage pipeline 30 and an auxiliary pipeline 50. The top of the main pipeline 10 is opened to communicate with the condensed water outlet pipe of the secondary heat exchanger, allowing the condensed water to flow into the main pipeline 10 and the main pipeline. The bottom end of 10 is closed to collect inflow condensate water in main line 10 . A first position and a second position are sequentially distributed on the main pipe 10 along the anti-gravity direction. The drainage pipe 30 communicates with the main pipe 10 at the first position, and the auxiliary pipe 50 communicates with the main pipe 10 at the second position. After the condensed water generated by the condensation of flue gas in the secondary heat exchanger flows into the main pipe 10 through the condensed water outlet pipe, it first accumulates between the bottom end of the main pipe 10 and the first position to form a water seal to prevent secondary heat exchange. The flue gas containing CO and other harmful gases in the device enters the room through the drain port 74, causing the user to be poisoned. When the condensed water accumulates for a period of time and the liquid level rises continuously and reaches the first position, part of the condensed water can flow into the drainage pipeline 30 for discharge, and at the same time, a water seal with a stable height is formed in the main pipeline 10 .

Then, as shown in FIG. 2 , the water flow in the main line 10 overflows into the auxiliary line 50 when the drain line 30 is blocked. When the condensed water continuously flows into the main pipe 10, if the drainage pipe 30 is blocked, the liquid level rises continuously, and exceeds the first position to reach the second position farther from the bottom of the main pipe 10, the condensed water will overflow into the auxiliary pipe Road 50. The water sealing device 100 further includes a first electrode needle 11 and a second electrode needle 51. The first electrode needle 11 is arranged in the main pipeline 10, the second electrode needle 51 is arranged in the auxiliary pipeline 50, and the first electrode needle 11 and the second electrode needle 51 are arranged in the auxiliary pipeline 50. When the liquid level in the main pipe 10 reaches the second position, the two electrode needles 51 are connected to each other, that is, when the drain pipe 30 is blocked and the liquid level of the condensate rises and flows into the auxiliary pipe 50, the first electrode needle 11 and the second electrode needle 51 are connected to each other. Both the two electrode needles 51 are in contact with the water flow and are connected to each other, so that the first electrode needle 11 and the second electrode needle 51 are not both arranged in the main pipeline 10, and the water flow will not pass through the first electrode needle at the same time before the liquid level reaches the second position. The electrode needle 11 and the second electrode needle 51 will not mislead the first electrode needle 11 and the second electrode needle 51 when the drainage pipeline 30 is not blocked, which improves the accuracy of the water sealing device 100 in judging the blockage fault.

The main pipe 10 includes an inner pipe 12 and an outer pipe 14 sleeved on the outer circumference of the inner pipe 12 at intervals. The inner pipe 12 has a water inlet end and a water outlet end that communicate with each other, and the outer pipe 14 has a top end and a bottom end distributed along the direction of gravity. The first position and the second position are sequentially distributed on the outer pipe 14 along the axial direction of the outer pipe 14 from the bottom end to the top end. The outer pipe 14 is connected to the drainage pipe 30 and the auxiliary pipe at the first position and the second position respectively. 50 connections. The water outlet end of the inner pipe 12 extends into the outer pipe 14 and a gap is reserved between it and the bottom end of the outer pipe 14 , and the water inlet end of the inner pipe 12 protrudes from the top end of the outer pipe 14 . In this way, the water inlet end of the inner pipe 12 is communicated with the condensed water outlet pipe on the secondary heat exchanger, so that the condensed water enters the inner pipe 12 and is allowed to pass through the gap between the inner pipe 12 and the bottom end of the outer pipe 14 The condensed water enters the outer pipe 14 , and finally when the liquid level continues to rise, the condensed water can also enter the drainage pipeline 30 and the auxiliary pipeline 50 through the first position and the second position on the outer pipe 14 , respectively. That is, the condensed water is sent into the outer pipe 14 through the inner pipe 12 .

Further, the first electrode needle 11 is arranged on the inner wall of the outer tube 14, the condensed water only flows into the outer tube 14 through the inner tube 12, the flowing condensed water will not pass through the first electrode needle 11 outside the inner tube 12, only the outer tube When the liquid level in 14 keeps rising, the condensed water will come into contact with the first electrode needle 11 on the inner wall of the outer tube 14 to ensure the accuracy of detection. In addition, the first electrode needle 11 is located between the first position and the bottom end of the outer pipe 14. When the liquid level of the condensed water in the main pipe 10 reaches the first position, the first electrode needle 11 has been in contact with the condensed water, and further When the liquid level continues to rise to the second position, the condensed water still contacts the second electrode needle 51, which will conduct the first electrode needle 11 and the second electrode needle 51 to prevent the first electrode needle 11 from being set higher than the second position. , to prevent the blockage failure of the drainage pipeline 30 from being detected in time when the liquid level rises.

Further, the outer pipe 14 includes a pipe body 15 and a water sealing cover 16, and the water sealing cover 16 is covered on one end of the pipe body 15 to form a closed bottom end of the outer pipe 14, so as to accumulate condensed water in the outer pipe 14 to form a water sealing .

The water sealing device 100 also includes a controller (not shown in the figure) and a blockage reminder (not shown in the figure). When the first electrode needle 11 and the second electrode needle 51 are turned on, the controller controls the fault reminder to turn on, reminding the user to timely The blockage fault of the drain line 30 is removed. When the first electrode needle 11 and the second electrode needle 51 are disconnected, the controller controls the blockage fault reminder to turn off. At this time, it means that the drainage pipeline 30 has been connected and can drain normally, and the drainage blockage reminder can be released. Optionally, the blockage reminder may be reminded by one or more of multiple reminder modes such as light, sound, and vibration, and the specific reminder form of the jam reminder is not limited herein.

The water sealing device 100 further includes a collection box 70 , the collection box 70 communicates with the auxiliary pipeline 50 , and the collection box 70 has a collection cavity 72 for accommodating the water flow out of the auxiliary pipeline 50 . When the liquid level in the main pipeline 10 reaches the second position, part of the condensed water can enter the collection cavity 72 of the collection box 70 through the auxiliary pipeline 50, and the condensed water generated by the heat exchange of the flue gas is contained in the collection box 70 to prevent drainage. After the pipeline 30 is blocked, the condensed water keeps rising and pours back into the furnace, so that the condensing wall-hung boiler can still work normally after the drain pipeline 30 is blocked. In this way, when the ambient temperature is low, if the drainage pipe 30 is blocked, the condensed water can continue to be collected through the collection box 70, and the condensing wall-hung boiler can continue to work normally. The furnace and heating system are frozen due to shutdown to prevent serious conditions such as freezing and cracking of condensing wall-hung boilers and heating systems.

Optionally, the drainage pipeline 30 and the auxiliary pipeline 50 are both L-shaped pipes, and both include a first pipe section and a second pipe section that are intersected and connected. 10 parallel. The second pipe section in the drainage pipeline 30 is a drainage section to discharge the condensed water from the outlet of the second pipe section; The water is introduced into the collection box 70 so that the water flow can flow into the collection box 70 from the second pipe section of the occupancy pipeline under its own gravity.

Further, the water sealing device 100 further includes a drain switch 80 , the collection box 70 is provided with a drain port 74 communicating with the collection cavity 72 , and the drain switch 80 is provided at the drain port 74 to close or open the drain port 74 . In this way, when the liquid level of the condensed water rises and flows into the collection box 70, the drain port 74 can be selectively opened and closed according to the level of the liquid level in the collection box 70. When there is a lot of condensed water accumulated in the collection box 70, the drain port 74 can be opened and closed. The drain switch 80 centrally drains the condensed water, so that the condensed water can be handled more conveniently. Specifically, when the drain switch 80 is turned off, the condensed water flowing into the collection box 70 keeps accumulating, and the liquid level of the condensed water keeps rising; when the drain switch 80 is turned on, the condensed water in the collection box 70 can be discharged to release the collection box 70, the condensed water can continue to be collected through the released internal space, so that the water sealing device 100 and the condensing type wall-hung boiler can continue to work. Optionally, the drain switch 80 is an electric two-way ball valve.

In some embodiments, when the first electrode needle 11 and the second electrode needle 51 are turned on, the controller controls the drain switch 80 to close, so as to accumulate the condensed water flowing out from the auxiliary pipeline 50 in the collection tank to prevent the condensed water from passing through The drain port 74 of the collection box continues to flow out and drips onto the ground or the stove, affecting the hygiene of the room. That is to say, when the drainage pipeline 30 is blocked, the condensed water enters the collection box through the auxiliary pipeline 50 and accumulates in the collection box, preventing the condensed water from pouring back into the furnace.

The water sealing device 100 also includes a liquid level detection mechanism, the liquid level detection mechanism is used to detect the actual liquid level in the collection box 70 and send it to the controller, when the actual liquid level in the collection box 70 exceeds the preset liquid level. , control the drain switch 80 to open, so that part of the condensed water in the collection box 70 is discharged from the drain port 74, release the space inside the collection box 70, lower the actual liquid level in the collection box 70, and continue to accommodate the condensed water. Moreover, when the actual liquid level is lower than the preset liquid level, the controller controls the drain switch 80 to be closed to prevent the condensed water from flowing out all the time. Optionally, the controller controls the drain switch 80 to close after the actual liquid level is lower than the preset liquid level for a period of time, so as to stop the draining of the condensed water after more internal space is reserved in the collection box 70 .

In this specific embodiment, the liquid level detection mechanism includes a third electrode needle 71 and a fourth electrode needle 73 arranged in the collection cavity 72 , and one of the third electrode needle 71 and the fourth electrode needle 73 is arranged in a preset At the liquid level, the other of the third electrode needle 71 and the fourth electrode needle 73 is set below the preset liquid level. The controller controls the drain switch 80 to open when the third electrode needle 71 and the fourth electrode needle 73 are turned on; the controller controls the drain switch 80 to close when the third electrode needle 71 and the fourth electrode needle 73 are disconnected.

As shown in FIG. 2 , during the continuous accumulation of the condensed water in the collection box 70 , the liquid level rises continuously, and the liquid level first reaches one of the third electrode needle 71 and the fourth electrode needle 73 located at the lower position. , the third electrode needle 71 and the fourth electrode needle 73 are not conducting, the liquid level is low at this time, and the condensed water in the collection box 70 is not much, so there is no need to open the drain switch 80 to drain the condensed water; as shown in FIG. 3 , when When the liquid level of the condensed water continues to rise, the liquid level reaches the other of the third electrode needle 71 and the fourth electrode needle 73 at the preset liquid level. Contact, the third electrode needle 71 and the fourth electrode needle 73 are connected to each other, when the liquid level reaches the preset liquid level, the drain switch 80 needs to be turned on to drain part of the condensed water to release the collection space in the collection box 70 . Optionally, the third electrode needle 71 is arranged at a position below the preset liquid level in the collection cavity 72 , and the fourth electrode needle 73 is arranged at the preset liquid level in the collection cavity 72 .

It can be understood that, in some other embodiments, the liquid level detection mechanism may also be other liquid level sensors, which are not limited herein.

In an embodiment of the present invention, there is also provided a condensing type wall-hung boiler, which includes the above-mentioned water sealing device 100, which can accurately determine the drainage blockage of condensed water.

Specifically, the condensing type wall-hung boiler further includes a flue gas heat exchanger, the flue gas heat exchanger has a condensed water outlet pipe, and the condensed water outlet pipe is communicated with the main pipeline 10 in the water sealing device 100, and the heat exchange in the flue gas heat exchanger The generated condensed water flows into the main pipeline 10 from the condensed water outlet pipe, and forms a water seal.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present utility model, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, some modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for this utility model shall be subject to the appended claims.

Claims (10)

1. A water seal arrangement (100), characterized by comprising:

the main pipeline (10), wherein a first position and a second position are sequentially distributed on the main pipeline (10) along the direction of counter-gravity;

a drain line (30) in communication with the main line (10) at the first location;

-an auxiliary line (50) communicating with said main line (10) in said second position; and

the liquid level meter comprises a first electrode needle (11) and a second electrode needle (51), wherein the first electrode needle (11) is arranged in the main pipeline (10), the second electrode needle (51) is arranged in the auxiliary pipeline (50), and the first electrode needle (11) and the second electrode needle (51) are communicated with each other when the liquid level in the main pipeline (10) reaches the second position.

2. The water seal device (100) according to claim 1, wherein the main pipeline (10) includes an inner pipe (12) and an outer pipe (14) sleeved at the periphery of the inner pipe (12) at intervals, the inner pipe (12) has a water inlet end and a water outlet end which are communicated with each other, the outer pipe (14) has a top end and a bottom end which are distributed along the gravity direction, and the first position and the second position are sequentially distributed on the outer pipe (14) along the axial direction of the outer pipe (14) from the bottom end to the top end;

the end protrusion of intaking of inner tube (12) the top of outer tube (14), inner tube (12) go out the water end stretch into in outer tube (14) and with outer tube (14) reserve the clearance between the bottom, first electrode needle (11) are located on the inner wall of outer tube (14).

3. The water seal arrangement (100) according to claim 2, wherein the first electrode needle (11) is located between the first position and the bottom end of the outer tube (14).

4. The water seal (100) according to any one of claims 1 to 3, further comprising a collecting box (70), said collecting box (70) being in communication with said auxiliary line (50), said collecting box (70) having a collecting chamber (72) housing the water flow exiting from said auxiliary line (50).

5. The water seal device (100) according to claim 4, further comprising a drain switch (80), wherein the collecting box (70) is provided with a drain opening (74) communicated with the collecting cavity (72), and the drain switch (80) is arranged at the drain opening (74) and closes or opens the drain opening (74).

6. The water seal device (100) according to claim 5, further comprising a controller, wherein the controller controls the drainage switch (80) to be closed when the first electrode needle (11) and the second electrode needle (51) are conducted.

7. The water seal arrangement (100) according to claim 6, further comprising a liquid level detection mechanism for detecting an actual liquid level in the collection box (70) and sending the detected actual liquid level to the controller, wherein the controller controls the drain switch (80) to be opened when the actual liquid level exceeds a preset liquid level; and when the actual liquid level is lower than a preset liquid level, the controller controls the drainage switch (80) to be closed.

8. The water seal arrangement (100) according to claim 7, wherein the liquid level detection mechanism comprises a third electrode needle (71) and a fourth electrode needle (73) arranged in the collection chamber (72), one of the third electrode needle (71) and the fourth electrode needle (73) is arranged at the preset liquid level, and the other of the third electrode needle (71) and the fourth electrode needle (73) is arranged below the preset liquid level;

the controller controls the drainage switch (80) to be opened when the third electrode needle (71) and the fourth electrode needle (73) are conducted; the controller controls the drainage switch (80) to be closed when the third electrode needle (71) and the fourth electrode needle (73) are disconnected.

9. The water seal device (100) according to claim 6, further comprising a blockage failure reminder, wherein the controller controls the blockage failure reminder to be turned on when the first electrode needle (11) and the second electrode needle (51) are conducted; and when the first electrode needle (11) and the second electrode needle (51) are disconnected, the controller controls the blockage fault reminder to be closed.

10. Condensing wall hanging stove, characterized in that it comprises a water seal (100) according to any of the previous claims 1 to 9.

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