Condensate collecting device for gas water heater

Abstract

The utility model discloses a kind of gas water heater condensate water collecting devices, comprising: condensate water neutralizing device and water pumping device, condensate water neutralizing device is provided with upper shell, the bottom of upper shell is communicated with water storage box, the inside of upper shell is provided with filter core, the inside of filter core is filled with condensate water neutralizing filler, the top of upper cover is provided with water inlet, the bottom of water storage box is provided with water outlet, water pumping device is provided with water pump, the inlet of water pump is communicated water outlet by hollow connecting pipe, water storage box can store neutral condensate water, water pump can be extracted after neutral condensate water in water storage box by one-way valve and be discharged into hot water pipe.The utility model does not need to additionally set up drain pipeline to handle condensate water, it is convenient to install maintenance and maintenance cost is lower.

Description

Technical Field

[0001] This utility model relates to a condensate collection device, and more particularly to a condensate collection device for a gas water heater. Background Technology

[0002] Currently, gas water heaters use gas heat recovery devices to collect heat from flue gas in order to improve energy efficiency. This process produces condensate in the heat exchanger. Since gas combustion produces exhaust gases, including carbon dioxide, nitric oxide, and nitrogen dioxide, these gases react with water vapor during condensation to form acidic substances such as carbonic acid and nitric acid. This makes the condensate highly acidic. Treating this acidic condensate requires a separate drainage pipe, which adds to the inconvenience of drainage for water heaters. Furthermore, the acidic condensate can easily corrode the pipes. Utility Model Content

[0003] To overcome the above-mentioned defects, this utility model provides a gas water heater condensate collection device, which has the advantages of handling condensate without the need for additional drainage pipes, easy installation and maintenance, and lower repair costs.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a gas water heater condensate collection device, including: a condensate neutralization device and a pumping device. The condensate neutralization device is provided with an upper shell, the bottom of which is connected to a water storage box. A filter element is provided inside the upper shell, and the filter element is filled with condensate neutralization filler. A top cover is detachably connected to the top of the upper shell, and a water inlet is provided on the top of the top cover. The water inlet is connected to the condensate drain outlet of the heat exchanger. A water outlet is provided at the bottom of the water storage box. The pumping device is provided with a water pump. The inlet of the water pump is connected to the water outlet through a hollow connecting pipe. The outlet of the water pump is connected to the inlet of a one-way valve. The outlet of the one-way valve is connected to the hot water pipe of the gas water heater. Acidic condensate in the heat exchanger can enter the upper shell through the water inlet. The condensate neutralization filler in the filter element can neutralize the acidic condensate into neutral condensate. The water storage box can store neutral condensate. The water pump can extract the neutral condensate from the water storage box and discharge it into the hot water pipe through the one-way valve.

[0005] Optionally, the upper shell is tubular, and the top cover is screwed to the top of the upper shell by threads. The upper shell and the top cover are sealed by an O-ring. The bottom of the upper shell is provided with a drain outlet that can extend into the water storage box. A fixing plate is fixed to the outer peripheral wall of the bottom of the upper shell. The fixing plate is connected to the top of the water storage box by bolts. The fixing plate and the water storage box are sealed by a sealing ring. The interior of the water storage box is hollow. The water outlet is located on the side wall of the water storage box. A filter frame is provided inside the water storage box. The filter frame is located between the drain outlet and the water outlet. The filter frame is covered with a filter screen.

[0006] Optionally, the filter element is a hollow cylinder with an open top and filter holes on its outer peripheral wall and bottom. The condensate neutralization filler is a condensate neutralization ball with a diameter larger than the filter hole. The top of the filter element is covered with a water-permeable filter element cover.

[0007] Optionally, the filter element may also contain activated carbon filler.

[0008] Optionally, the fixing plate is provided with a first water level monitoring probe, a second water level monitoring probe and a third water level monitoring probe. The bottom ends of the first water level monitoring probe, the second water level monitoring probe and the third water level monitoring probe can all extend into the water storage box. The length of the first water level monitoring probe is greater than that of the second water level monitoring probe, and the length of the second water level monitoring probe is greater than that of the third water level monitoring probe. Two water level monitoring electrodes are provided on the upper cover, and both water level monitoring electrodes can extend into the upper shell.

[0009] Optionally, the pumping device includes a base plate, a fixing hoop, a water pump, a three-way connector, a solenoid valve, and a check valve. The water pump is fixed to the base plate by the fixing hoop. The outlet of the water pump is connected to the first port of the three-way connector, the second port of the three-way connector is connected to the solenoid valve, and the third port of the three-way connector is connected to the inlet of the check valve. The solenoid valve can control the opening or closing of the second port, and the second port can discharge air from the water pump.

[0010] Alternatively, the fixing hoop may be made of a flexible material.

[0011] Optionally, the bottom of the water storage box is provided with a drain port, which is detachably and threadedly sealed with a drain cover.

[0012] The beneficial technical effects of this utility model are as follows: The gas water heater condensate collection device includes a condensate neutralization device and a pumping device. During use, the acidic condensate generated in the heat exchanger enters the upper shell. The acidic condensate in the upper shell passes through the filter element and contacts the condensate neutralization packing inside the filter element. The condensate neutralization packing neutralizes the acidic condensate into neutral condensate, which then flows into the storage box. The neutralized condensate in the storage box is pumped out from the outlet and flows through the hollow connecting pipe into the inlet of the one-way valve. Then, it flows through the outlet of the one-way valve into the hot water pipe and is discharged along with the hot water. This design eliminates the need for a separate condensate drain pipe. Acidic condensate is neutralized by the neutralizing filler, ensuring it won't irritate the human body after being discharged from the hot water pipe and reducing pipe corrosion. Furthermore, the separate design of the condensate neutralization device and the pumping device, connected by a hollow connecting pipe, offers greater flexibility in installation compared to a one-piece design, facilitating installation and maintenance. If either the neutralization device or the pumping device fails, only the damaged part needs to be replaced, resulting in lower repair costs. The advantages include handling condensate without additional drain pipes, ease of installation and maintenance, and lower repair costs. Attached Figure Description

[0013] Figure 1 This is a three-dimensional view of the entire machine of this utility model;

[0014] Figure 2 This is a front sectional view of the condensate neutralization device of this utility model;

[0015] Figure 3 This is a perspective view of the pumping device of this utility model;

[0016] Figure 4 This is a perspective view of the water storage box of this utility model;

[0017] Figure 5 This is a perspective view of the upper shell of this utility model;

[0018] Figure 6 This is a perspective view of the filter element of this utility model;

[0019] in:

[0020] 1. Condensate neutralization device; 11. Upper shell; 12. Water storage box; 13. Filter element; 14. Top cover;

[0021] 15. Inlet; 16. Outlet; 17. Fixing plate; 18. Filter screen frame; 19. Filter screen;

[0022] 110. First water level monitoring probe; 111. Second water level monitoring probe; 112. Third water level monitoring probe; 114. Water level monitoring electrode; 115. Drain outlet; 116. Sewage outlet; 2. Pumping device; 21. Water pump; 22. One-way valve; 23. Base plate; 24. Fixing clamp; 25. T-joint; 26. Solenoid valve; 27. Inlet; 3. Hollow connecting pipe. Detailed Implementation

[0023] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0024] This specific embodiment details the condensate collection device for a gas water heater described in this application, such as... Figures 1-6As shown, the condensate collection device for the gas water heater includes: a condensate neutralization device 1 and a pumping device 2. The condensate neutralization device 1 is equipped with an upper shell 11, the bottom of which is connected to a water storage box 12. A filter element 13 is installed inside the upper shell 11, and the filter element 13 is filled with condensate neutralization filler. A top cover 14 is detachably connected to the top of the upper shell 11, and a water inlet 15 is provided on the top of the top cover 14, which is connected to the condensate drain outlet of the heat exchanger. A water outlet 16 is provided at the bottom of the water storage box 12. The pumping device 2 is equipped with a water pump. 21. The inlet 27 of the water pump 21 is connected to the outlet 16 through the hollow connecting pipe 3. The outlet of the water pump 21 is connected to the inlet of the one-way valve 22. The outlet of the one-way valve 22 is connected to the hot water pipe of the gas water heater. The acidic condensate in the heat exchanger can enter the upper shell 11 through the inlet 15. The condensate neutralizing packing in the filter element 13 can neutralize the acidic condensate into neutral condensate. The water storage box 12 can store the neutral condensate. The water pump 21 can draw the neutral condensate from the water storage box 12 and discharge it into the hot water pipe through the one-way valve 22. During operation, the acidic condensate generated in the heat exchanger enters the upper shell 11. The acidic condensate in the upper shell 11 passes through the filter element 13 and comes into contact with the neutralizing packing material inside the filter element 13. The neutralizing packing material neutralizes the acidic condensate into neutral condensate, which then flows into the water storage box 12. The neutralized condensate in the water storage box 12 is drawn out from the outlet 16 by the water pump 21 and flows through the hollow connecting pipe 3 into the inlet of the one-way valve 22. Then, it flows through the outlet of the one-way valve 22 into the hot water pipe and is discharged along with the hot water. This eliminates the need for separate condensate drainage. A separate condensate drain pipe is installed, and the acidic condensate is neutralized by the condensate neutralizing filler. After being discharged from the hot water pipe, it will not irritate the human body and reduces corrosion to the pipes. Furthermore, because the condensate neutralization device 1 and the pumping device 2 are separate designs connected by a hollow connecting pipe 3, the installation process is more flexible compared to an integrated design, facilitating installation and maintenance. If either the condensate neutralization device 1 or the pumping device 2 fails, only the damaged device needs to be replaced for repair, resulting in lower maintenance costs. It has the advantages of handling condensate without the need for additional drain pipes, easy installation and maintenance, and lower repair costs.

[0025] It should be noted that in this embodiment, the flow rate of the water pump 21 is no more than 100 ml per minute, and the hot water flow rate of the gas water heater is greater than 10 L per minute. Although introducing neutralized condensate into the hot water will slightly lower the outlet water temperature, the amount of condensate is small (less than one percent of the hot water), and the impact on the outlet water temperature is negligible (usually less than ±0.5 degrees). The above fluctuation range is not noticeable to the human body, and it is also less than the water temperature fluctuation range of ±3 degrees required by GB 6932-2015 "Household Gas Rapid Water Heaters". Therefore, introducing condensate into the hot water will not affect its use.

[0026] Optionally in this embodiment, the upper shell 11 is tubular, and the upper cover 14 is threaded to the top of the upper shell 11. The upper shell 11 and the upper cover 14 are sealed by an O-ring. The bottom of the upper shell 11 is provided with a drain outlet 115 that can extend into the water storage box 12. A fixing plate 17 is fixed to the outer peripheral wall of the bottom of the upper shell 11. The fixing plate 17 is connected to the top of the water storage box 12 by bolts. The fixing plate 17 and the water storage box 12 are sealed by a sealing ring. The interior of the water storage box 12 is hollow, and the water outlet 16 is provided on the side wall of the water storage box 12. A filter frame 18 is provided inside the water storage box 12. The filter frame 18 is located between the drain outlet 115 and the water outlet 16, and a filter screen 19 is covered on the filter frame 18. The filter screen 19 can filter impurities in the condensate, reducing the probability of impurities clogging the water outlet 16.

[0027] Optionally in this embodiment, the filter element 13 is a hollow cylinder with an open top. Filter holes are formed on the outer peripheral wall and bottom of the filter element 13. The condensate neutralization filler is a condensate neutralization ball, the diameter of which is larger than the filter holes. The top of the filter element 13 is covered with a water-permeable filter element cover. The filter element cover prevents the condensate neutralization filler from detaching from the filter element 13. In this embodiment, the condensate neutralization ball is a commercially available product.

[0028] Optionally in this embodiment, the filter element 13 is also provided with activated carbon packing. The activated carbon packing can absorb heavy metals and odors in the condensate, further purifying the condensate.

[0029] Optionally in this embodiment, the fixing plate 17 is provided with a first water level monitoring probe 110, a second water level monitoring probe 111, and a third water level monitoring probe 112. The bottom ends of the first water level monitoring probe 110, the second water level monitoring probe 111, and the third water level monitoring probe 112 can all extend into the water storage box 12. The length of the first water level monitoring probe 110 is greater than that of the second water level monitoring probe 111, and the length of the second water level monitoring probe 111 is greater than that of the third water level monitoring probe 112. The upper cover 14 is provided with two water level monitoring electrodes 114, and both water level monitoring electrodes 114 can extend into the upper shell 11. The first water level monitoring probe 110, the second water level monitoring probe 111, and the third water level monitoring probe 112 are electrically connected to a controller. The controller can detect the resistance changes between the first water level monitoring probe 110 and the second water level monitoring probe 111, as well as the resistance changes between the first water level monitoring probe 110 and the third water level monitoring probe 112, thereby limiting the water level in the water storage box 12 within a set range. Specifically, the principle of water level monitoring is as follows: the bottom position of the third water level monitoring probe 112 is set as the upper limit of the water level in the water storage box 12, and the bottom position of the second water level monitoring probe 111 is set as the lower limit of the water level in the water storage box 12. Since the first water level monitoring probe 110 is the longest, its bottom is closer to the bottom of the water storage box 12 than the other two water level monitoring probes. Therefore, the water storage box 1... The water in the storage box 12 can submerge the bottom of the first water level monitoring probe 110, whether it is at the upper or lower limit. When the water level in the storage box 12 exceeds the bottom of the third water level monitoring probe 112, the controller detects a change in resistance between the first and third water level monitoring probes 110 and 112. At this time, it is determined that the water level exceeds the upper limit. The controller controls the water pump 21 to start and pump the condensate in the storage box 12. The water level in the storage box 12 gradually decreases until it is lower than the bottom of the second water level monitoring probe 111. At this time, the first and second water level monitoring probes 110 and 111 are open-circuited. The controller detects a change in resistance between them and determines that the water level is lower than the lower limit. The controller controls the water pump 21 to stop pumping water until the water level in the storage box 12 exceeds the bottom of the third water level monitoring probe 112 again. In this embodiment, the two water level monitoring electrodes 114 are also electrically connected to the controller. The controller can detect the change in resistance between the two water level monitoring electrodes 114. When the condensate water exceeds the two water level monitoring electrodes 114, it means that the water level of the condensate water has reached the top cover 14, indicating that the condensate water drainage is not smooth. At this time, the controller shuts down the water heater and controls the water heater to issue a fault alarm.

[0030] Optionally in this embodiment, the pumping device 2 includes a base plate 23, a fixing clamp 24, a water pump 21, a three-way connector 25, a solenoid valve 26, and a one-way valve 22. The water pump 21 is fixed to the base plate 23 by the fixing clamp 24. The outlet of the water pump 21 is connected to the first port of the three-way connector 25, the second port of the three-way connector 25 is connected to the solenoid valve 26, and the third port of the three-way connector 25 is connected to the inlet of the one-way valve 22. The solenoid valve 26 can control the opening or closing of the second port, which can discharge air from the water pump 21. Before the water pump 21 is started, the solenoid valve 26 can open the second port to discharge air from the water pump 21. Then, the solenoid valve 26 closes the second port before starting the water pump 21. This reduces the amount of air inside the water pump 21 during startup and reduces wear on the water pump 21 during startup.

[0031] Optionally, in this embodiment, the fixing hoop 24 is made of a flexible material.

[0032] Optionally in this embodiment, a drain port 116 is provided at the bottom of the water storage box 12, and a drain cover is detachably and threadedly connected to the drain port 116. When there are too many impurities in the water storage box 12 and the outlet 16 cannot effectively drain the condensate, the user can open the drain port 116 to drain the condensate inside the water storage box 12, so that the user can remove the water storage box 12 and clean its interior.

[0033] Using the gas water heater condensate collection device in this embodiment has the advantages of handling condensate without the need for additional drainage pipes, easy installation and maintenance, and lower repair costs.

Claims

1. A condensate collection device for a gas water heater, characterized in that, include: The condensate neutralization device (1) and the pumping device (2) are provided. The condensate neutralization device (1) is provided with an upper shell (11). The bottom of the upper shell (11) is connected to a water storage box (12). The upper shell (11) is provided with a filter element (13). The filter element (13) is filled with condensate neutralization filler. The top of the upper shell (11) is detachably connected to a top cover (14). The top of the top cover (14) is provided with a water inlet (15). The water inlet (15) is connected to the condensate drain outlet of the heat exchanger. The bottom of the water storage box (12) is provided with a water outlet (16). The pumping device (2) is provided with a water pump (21). (21) The inlet (27) is connected to the outlet (16) through the hollow connecting pipe (3). The outlet of the water pump (21) is connected to the inlet of the one-way valve (22). The outlet of the one-way valve (22) is connected to the hot water pipe of the gas water heater. The acidic condensate in the heat exchanger can enter the upper shell (11) through the inlet (15). The condensate neutralizing packing in the filter element (13) can neutralize the acidic condensate into neutral condensate. The water storage box (12) can store the neutral condensate. The water pump (21) can extract the neutral condensate in the water storage box (12) and discharge it into the hot water pipe through the one-way valve (22).

2. The gas water heater condensate collection device according to claim 1, characterized in that: The upper shell (11) is tubular, and the upper cover (14) is screwed to the top of the upper shell (11) by threads. The upper shell (11) and the upper cover (14) are sealed by an O-ring. The bottom of the upper shell (11) is provided with a drain outlet (115) that can extend into the water storage box (12). A fixing plate (17) is fixed to the outer peripheral wall of the bottom of the upper shell (11). The fixing plate (17) is connected to the top of the water storage box (12) by bolts. The fixing plate (17) and the water storage box (12) are sealed by a sealing ring. The interior of the water storage box (12) is hollow. The water outlet (16) is provided on the side wall of the water storage box (12). A filter frame (18) is provided inside the water storage box (12). The filter frame (18) is located between the drain outlet (115) and the water outlet (16). A filter screen (19) is covered on the filter frame (18).

3. The gas water heater condensate collection device according to claim 2, characterized in that: The filter element (13) is a hollow cylinder with an open top. Filter holes are provided on the outer peripheral wall and bottom of the filter element (13). The condensate neutralization filler is a condensate neutralization ball with a diameter larger than the filter hole. The top of the filter element (13) is covered with a water-permeable filter element cover.

4. The gas water heater condensate collection device according to claim 3, characterized in that: The filter element (13) is also equipped with activated carbon filler.

5. The condensate collection device for a gas water heater according to claim 3, characterized in that: The fixing plate (17) is provided with a first water level monitoring probe (110), a second water level monitoring probe (111) and a third water level monitoring probe (112). The bottom ends of the first water level monitoring probe (110), the second water level monitoring probe (111) and the third water level monitoring probe (112) can all extend into the water storage box (12). The length of the first water level monitoring probe (110) is greater than that of the second water level monitoring probe (111), and the length of the second water level monitoring probe (111) is greater than that of the third water level monitoring probe (112). The upper cover (14) is provided with two water level monitoring electrodes (114), and both water level monitoring electrodes (114) can extend into the upper shell (11).

6. The condensate collection device for a gas water heater according to claim 5, characterized in that: The pumping device (2) includes a base plate (23), a fixing hoop (24), a water pump (21), a three-way connector (25), a solenoid valve (26), and a check valve (22). The water pump (21) is fixed to the base plate (23) by the fixing hoop (24). The outlet of the water pump (21) is connected to the first port of the three-way connector (25). The second port of the three-way connector (25) is connected to the solenoid valve (26). The third port of the three-way connector (25) is connected to the inlet of the check valve (22). The solenoid valve (26) can control the opening or closing of the second port. The second port can discharge air from the water pump (21).

7. The condensate collection device for a gas water heater according to claim 6, characterized in that: The fixing hoop (24) is made of flexible material.

8. The condensate collection device for a gas water heater according to claim 2, characterized in that: The bottom of the water storage box (12) is provided with a drain port (116), and the drain port (116) is detachably and threadedly sealed with a drain cover.

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