Condensation heat exchange device and gas water heater

Abstract

The utility model discloses a condensation heat exchange device and a gas water heater. The condensation heat exchange device comprises a condensation heat exchange shell, an atomization shell, a first smoke exhaust shell and an atomization device. A first smoke inlet in the condensation heat exchange shell communicates with the condensation heat exchange cavity. A first water inlet and a mist outlet of the atomizing shell are respectively communicated with the atomizing cavity; a mist discharging opening is formed in the top end of the atomization shell, and a first water inlet in the atomization shell communicates with the bottom of the condensation heat exchange cavity; a smoke exhaust port is formed in the top end of the first smoke exhaust shell, a second smoke inlet is formed in the bottom end of the first smoke exhaust shell, the smoke exhaust port and the second smoke inlet are communicated with the first smoke exhaust cavity, the second smoke inlet is opposite to the mist exhaust port, and the position of the second smoke inlet is lower than that of the first smoke inlet. In this way, the flowing path of water mist formed after the condensate water is atomized by the atomizing device can be prolonged, flue gas flow is prevented from directly blowing the root of agglomerate mist formed by the atomizing device, it is avoided that the mist is blown to the single-side cavity wall in a disordered mode by the flue gas to be liquefied and gathered, the better mist forming effect is guaranteed, and the mist is smoothly discharged along with the flue gas.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a condensing heat exchange device and a gas water heater. Background Art

[0002] During the operation of a condensing gas water heater, combustion and heat exchange will produce condensed water. In the early days, there were two main ways to deal with condensed water: the first was to connect the condensed water to the drain pipe, which was extended to the drainage pipe reserved in the user's home for discharge; the second was to use a water box to collect the condensed water and regularly pour it out before the condensed water filled the water box.

[0003] The shortcoming of the first treatment method is that the distance between the drainage pipe reserved in the user's home and the gas water heater is uncertain, resulting in an uncertain length of the drainage pipe. When the drainage pipe is too long, it has a greater impact on the appearance. When the drainage pipe is too short, it is not easy to connect to the drainage pipe. The shortcoming of the second treatment method is that the user is required to pour water regularly. Once the user forgets to pour water, the water will overflow and cause inconvenience to the user.

[0004] In order to solve the shortcomings of the above two condensate treatment methods, a third condensate treatment method has emerged: an atomizing device is set under the shell of the condensate heat exchange device of the water heater, and the condensate is atomized into fine water particles by the atomizing device, and then discharged to the outside through the smoke pipe. However, its shortcomings are: the atomizing device is set under the shell of the condensate heat exchange device, and when the flue gas enters the shell of the condensate heat exchange device, the flue gas directly blows away the root of the fog group formed by the atomizing device, reducing the amount of fog, thereby reducing the discharge of condensate water mist.

[0005] In view of the above-mentioned shortcomings, it is necessary to design a condensing heat exchange device and a gas water heater. Utility Model Content

[0006] Therefore, the technical problem to be solved by the utility model lies in that in the existing condensing heat exchange device, the atomizing device is arranged below the shell of the condensing heat exchange device. When the flue gas enters the shell of the condensing water heat exchange device, the flue gas directly blows away the root of the fog group formed by the atomizing device, thereby reducing the amount of fogging and thus reducing the discharge of condensed water mist, thereby providing a condensing heat exchange device and a gas water heater.

[0007] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0008] A condensation heat exchange device comprises a condensation heat exchange shell, a first smoke exhaust shell, an atomization shell, and an atomization device;

[0009] A condensation heat exchange cavity is provided in the condensation heat exchange shell, and a first smoke inlet communicating with the condensation heat exchange cavity is opened on the condensation heat exchange shell;

[0010] An atomizing chamber is provided in the atomizing shell, and a first water inlet and a mist outlet are provided on the atomizing shell, which are respectively connected to the atomizing chamber (31); the mist outlet is provided at the top of the atomizing shell, and the top of the atomizing shell extends into the condensing heat exchange chamber, the first water inlet is connected to the bottom of the condensing heat exchange chamber (10), and the atomizing device is installed at the bottom of the atomizing chamber;

[0011] The bottom end of the first smoke exhaust shell extends into the condensation heat exchange chamber and is provided with a second smoke inlet, and the top end extends out of the condensation heat exchange chamber and is provided with a smoke exhaust port. The first smoke exhaust shell is provided with a first smoke exhaust chamber, and the second smoke inlet and the smoke exhaust port are respectively connected to the first smoke exhaust chamber, the second smoke inlet is opposite to the mist exhaust port, and the second smoke inlet is located at a lower position than the first smoke inlet.

[0012] In the utility model, since the second smoke inlet of the first smoke exhaust shell is opposite to the fog outlet of the atomizing shell and is located below the first smoke inlet of the condensation processing shell, the flow path of the water mist formed after the condensed water is atomized by the atomizing device is extended, and the flue gas flow is avoided from directly blowing the root of the fog group formed by the atomizing device, and the fog is avoided from being blown to the single-side cavity wall by the flue gas turbulence to liquefy and gather, thereby ensuring a better fogging effect and being discharged smoothly with the flue gas.

[0013] A gas water heater comprises the aforementioned condensing heat exchange device.

[0014] The technical solution of the utility model has the following advantages:

[0015] The gas water heater provided by the utility model has the advantages of a condensing heat exchange device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the internal structure of the gas water heater of the utility model;

[0018] Figure 2 It is a schematic diagram of the combination of the condensation heat exchange device of the utility model;

[0019] Figure 3 This is an explosion diagram of the condensing heat exchange device of the utility model;

[0020] Figure 4It is a schematic diagram of the combination of the condensation heat exchange device of the utility model;

[0021] Figure 5 It is a cross-sectional schematic diagram of the condensing heat exchange device of the utility model;

[0022] Figure 6 Another cross-sectional schematic diagram of the condensing heat exchange device of the utility model;

[0023] Figure 7 It is a cross-sectional schematic diagram of the shell of the condensing heat exchange device of the utility model;

[0024] Figure 8 It is a schematic diagram of the flue gas velocity cloud diagram in the condensing heat exchange device of the utility model;

[0025] Fig. 9 It is a schematic diagram of the flue gas velocity vector diagram in the condensing heat exchange device of the utility model;

[0026] Fig.10 The utility model is a condensing heat exchange device inner edge Figure 7 Schematic diagram of the smoke velocity vector diagram on the A-A line section.

[0027] Description of reference numerals:

[0028] 1. Condensation heat exchange shell; 10. Condensation heat exchange chamber; 11. First smoke inlet; 12. Condensation heat exchanger; 14. Exhaust notch; 15. Upper cover; 151. Upper cover sealing ring; 2. First smoke exhaust shell; 21. Second smoke inlet; 22. Smoke exhaust port; 3. Atomization shell; 31. Atomization chamber; 32. Mist exhaust port; 33. First water inlet; 4. Condensate treatment component; 41. Condensate treatment shell; 410. Condensate treatment chamber; 411. Second water inlet; 412. Drainage channel; 4123. Water passage; 413. Reinforcement ribs; 414. Treatment chamber cover; 4141. Reinforcement ribs; 4142. Drain port; 4143. Sealing ring for cover; 42. Filter element assembly; 421. Filter element; 422. Neutralizing filter element; 423. Outer filter screen; 5. Atomizing device; 53. Atomizing chamber filter element upper cover; 54. Atomizing chamber neutralizing filter element; 55. Atomizing sealing ring; 6. Second smoke exhaust shell; 61. Mist inlet; 62. Mist outlet; 71. Main flow channel; 72. Secondary flow channel; 8. First water level monitoring element; 9. Second water level monitoring element; A. Controller; B. Hot water circulation pump; C. Fan; D. Main heat exchanger; E. Burner; F. Gas proportional valve; G. Drain valve. DETAILED DESCRIPTION

[0029] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] like Figures 1 to 10 As shown, this embodiment provides a gas water heater, including a condensing heat exchange device, a controller A, a hot water circulation pump B, a fan C, a main heat exchanger D, a burner E, a gas proportional valve F, a drain pipe G, a drain valve H (the drain valve H can be an electromagnetic drain valve or a manual drain valve), etc.

[0034] The condensation heat exchange device comprises a condensation heat exchange shell 1 , a first smoke exhaust shell 2 , an atomization shell 3 , a condensation water treatment component 4 , and an atomization device 5 .

[0035] A condensation heat exchange chamber 10 is provided in the condensation heat exchange housing 1. A first smoke inlet 11 connected to the condensation heat exchange chamber 10 is provided on the condensation heat exchange housing 1. The first smoke inlet 11 allows hot smoke to enter the condensation heat exchange chamber 10. Figure 2From the perspective of the embodiment, the first smoke inlet 11 is opened on the left side of the condensing heat exchange shell 1. A condensing heat exchanger 12 is installed in the condensing heat exchange chamber 10. The condensing heat exchanger 12 is used to absorb the waste heat of the flue gas to precipitate condensed water and improve the heat exchange efficiency of the flue gas. In this embodiment, the condensing heat exchanger 12 is a bellows structure heat exchanger. A condensing water outlet is opened at the bottom end of the condensing heat exchange chamber 10, and an exhaust notch 14 is provided at the position corresponding to the condensing water outlet. The setting of the exhaust notch 14 allows the condensed water to flow smoothly from the condensing heat exchange chamber 10 into the condensing water treatment chamber 410 described below.

[0036] The condensing heat exchange shell 1 comprises an upper cover 15 . The upper cover 15 is sealedly connected to the side wall of the condensing heat exchange shell 1 via an upper cover sealing ring 151 .

[0037] An atomizing chamber 31 is provided in the atomizing shell 3. A first water inlet 33 and a mist outlet 32 ​​which are respectively connected to the atomizing chamber 31 are provided on the atomizing shell 3. The mist outlet 32 ​​is provided at the top of the atomizing shell 3, and the top of the atomizing shell 3 extends into the condensing heat exchange chamber 10. The first water inlet 33 is connected to the bottom of the condensing heat exchange chamber 10. The atomizing device 5 is installed at the bottom of the atomizing chamber 31. The atomizing device 5 is used to atomize the treated water into water mist. The atomizing device 5 and the atomizing shell 3 are sealed by an atomizing sealing ring 55. The atomizing device 5 includes an atomizing head and a first water level monitoring element 8. An atomizing chamber neutralizing filter element 54 is provided in the atomizing chamber 31. An atomizing chamber filter element upper cover 53 is provided above the atomizing chamber neutralizing filter element 54. The atomizing chamber neutralizing filter element 54 is annular and is arranged on the inner bottom wall of the atomizing chamber 31. The reason why the atomizing chamber neutralizing filter 54 is provided is that the atomizing chamber 31 is in contact and connected with the smoke of the first smoke exhaust housing 2 , and the water quality in the atomizing chamber 31 may be affected by the reflux liquid and the smoke, causing the water quality in the atomizing chamber 31 to become weakly acidic again, thereby affecting the life of the atomizing device 5 .

[0038] The top of the first smoke exhaust housing 2 extends out of the condensation heat exchange chamber 10 and is provided with a smoke exhaust port 22, and the bottom extends into the condensation heat exchange chamber 10 and is provided with a second smoke inlet 21. The first smoke exhaust housing 2 is provided with a first smoke exhaust chamber (not marked). The smoke exhaust port 22 and the second smoke inlet 21 are respectively connected to the first smoke exhaust chamber. The second smoke inlet 21 is opposite to the mist exhaust port 32, and the position of the second smoke inlet 21 is lower than the position of the first smoke inlet 11.

[0039] The condensate treatment assembly 4 includes a condensate treatment housing 41 and a filter element assembly 42. The condensate treatment housing 41 is fixed to the outer bottom of the condensation heat exchange housing 1. The condensate treatment housing 41 is provided with a condensate treatment chamber 410 (such as Figure 7The condensate treatment housing 41 is provided with a second water inlet 411 and a drainage channel 412 which are respectively connected to the condensate treatment chamber 410. The second water inlet 411 is provided at the top of the condensate treatment housing 41 and is connected to the condensate water outlet provided at the bottom of the condensation heat exchange chamber 10. The drainage channel 412 is connected to the condensate treatment chamber 410 through the water passage 4123 (as shown in FIG. Figure 6 The filter element 42 is connected to the first water inlet 33 and forms a water seal structure between the atomizing chamber 31 and the condensate treatment chamber 410 to prevent smoke from entering the atomizing chamber 31. The filter element assembly 42 includes a filter element 421 and a neutralizing filter element 422. The filter element 421 and the neutralizing filter element 422 are vertically stacked in the condensate treatment chamber 410 in sequence along the flow direction of the condensate. For the convenience of explanation, the condensate treated by the condensate treatment assembly 4 is defined as treated water.

[0040] In this embodiment, the filter element 421 is a porous ceramic filter element, which can withstand the impact of high-temperature heat flow in the incoming direction and is used for preliminary impurity filtration of condensed water; the neutralization filter element 422 is used to neutralize and further filter the condensed water coming from the filter element 421 to prevent fine impurities from entering the atomization chamber 31 and forming scale on the atomization head of the atomization device 5, thereby affecting the final atomization amount.

[0041] In this embodiment, the filter element assembly 42 further includes an outer filter screen 423. The outer filter screen 423 is disposed on the periphery of the filter element 421 and the neutralization filter element 422, and is used to integrate the filter element 421 and the neutralization filter element 422 into an integral structure, so that the filter element assembly 42 can be compactly installed in the condensate treatment chamber 410.

[0042] A reinforcing rib 413 is also provided on the inner wall of the condensate treatment housing 41. A gap (not marked) is formed between the outer filter screen 423 and the reinforcing rib 413. When the porous ceramic filter element and / or the neutralizing filter element 422 has a reduced water flow rate after long-term use, the condensate can seep out from the periphery of the outer filter screen 423, thereby preventing the condensate from being blocked.

[0043] The bottom end of the condensate treatment housing 41 is provided with an installation port for the filter element assembly 42 to be disassembled and assembled, and the processing chamber cover 414 can detachably block the bottom end of the condensate treatment housing 41. The processing chamber cover 414 is circular, and a plurality of reinforcing ribs 4141 are arranged circumferentially on the inner bottom wall. The reinforcing ribs 4141 protrude into the condensate treatment chamber 410, and are used to support the filter element assembly 42, so that a drainage channel 412 is formed between the filter element assembly 42 and the bottom wall of the condensate treatment chamber 410. The drainage channel 412 is connected to the first water inlet 33 on the atomization housing 3 through the water passage 4123. A sewage outlet 4142 is provided on the processing chamber cover 414. When the water heater needs to be cleaned, or the condensate in the condensation heat exchange chamber 10 exceeds the preset water level, the normally closed sewage valve G can be opened to connect the external sewage pipe for emergency drainage treatment. The processing chamber cover 414 is sealed and connected to the side wall of the condensate treatment housing 41 through the cover sealing ring 4143.

[0044] The condensing heat exchange device also includes a second smoke exhaust shell 6. The second smoke exhaust shell 6 is a cavity structure that tapers upward. A second smoke exhaust cavity (not marked) is provided in the second smoke exhaust shell 6. Openings connected to the second smoke exhaust cavity are respectively provided at both ends of the second smoke exhaust shell 6. The second smoke exhaust shell 6 is gap-fitted into the first smoke exhaust shell 2. The top end of the second smoke exhaust shell 6 extends upward into the first smoke exhaust cavity, and the bottom end extends downward out of the first smoke exhaust cavity. For the convenience of explanation, the opening at the top is defined as the mist outlet 62, and the opening at the bottom is defined as the mist inlet 61. The mist inlet 61 is opposite to the mist exhaust port 32.

[0045] In addition, the channel in the second smoke exhaust shell 6 (i.e., the second smoke exhaust chamber) is defined as the main flow channel 71 of the smoke, and the cross-sectional area of ​​the main flow channel 71 is the first gas flow area; the channel between the first smoke exhaust shell 2 and the second smoke exhaust shell 6 is the secondary flow channel 72 of the smoke, and the cross-sectional area of ​​the secondary flow channel 72 is the second gas flow area. The hot smoke mainly drives the water mist out of the second smoke exhaust shell 6 from the main flow channel 71. A small amount of hot smoke enters the secondary flow channel 72 to heat the second smoke exhaust shell 6 to prevent the smoke from condensing and liquefying too quickly when encountering a cold wall, causing excessive reflux, and then reducing the amount of condensed water atomization discharge. When the main flow channel 71 is too large and the secondary flow channel 72 is too small, the temperature of the side wall of the second smoke exhaust housing 6 will be too cold or insufficiently insulated, causing the mist to easily gather and liquefy and reflux when it encounters the cold wall, reducing the amount of mist exhaust; when the main flow channel 71 is too small and the secondary flow channel 72 is too large, since the atomizing chamber 31 is directly below the second smoke exhaust housing 6, it will obviously be unfavorable to timely gather and store the mist generated by the atomizing device 5 atomizing the water, causing the mist to drift to the surrounding space, making the mist flow field more tortuous and chaotic, which is not conducive to the maximum entry of the mist into the second smoke exhaust housing 6. Therefore, preferably, the ratio of the first gas flow area to the second gas flow area is 1.65 to 1.90 to ensure that the smoke can be discharged to the outside to the maximum extent.

[0046] like Figure 5 and Figure 7 As shown, the hot flue gas enters the condensation heat exchange chamber 10 from the first smoke inlet 11, and forms a U-shaped trend inside the condensation heat exchange chamber 10 as a whole. From the condensation heat exchange chamber 10 to the bottom of the atomization chamber 31, the hot flue gas path is L-shaped, and the bottom hot flue gas directly blows the side wall of the atomization chamber 31 on the right side, and then turns upward to enter the smoke discharge channel. Since the side wall of the atomization chamber 31 forms a turbulent effect on the bottom hot flue gas, the path of the hot flue gas passing through the right side of the atomization chamber 31 is longer than that of the left side, and the resistance along the way is relatively large. In order to ensure the overall uniformity of the smoke fluid and flow rate at the exhaust port 32 of the atomization chamber 31, and to prevent the smoke airflow from directly colliding with the right side wall of the second smoke exhaust shell 6 and affecting the exhaust effect, a bevel cut at a certain angle is set at the top of the atomization chamber 31, so that the top surface of the atomization chamber 31 is an inclined surface, and the inclined surface is set in a downhill shape toward the side facing away from the first smoke inlet 11. Preferably, the angle α (such as Figure 7 The angle of the smoke velocity is 5 to 10 degrees, so that the hot smoke on the right can enter the subsequent smoke exhaust channel more evenly and smoothly, and then form a relatively uniform smoke flow field at the mist inlet 61 of the second smoke exhaust shell 6. Figure 8 As shown, the schematic diagram of the velocity vector diagram of the condensation atomization flue gas is as follows Fig. 9 As shown, the schematic diagram of the flue gas velocity vector diagram along the A-A section in the condensing heat exchange device is as follows Fig.10 shown.

[0047] Furthermore, the vertical distance H between the bottom end surface of the second smoke exhaust housing 6 and the top end surface of the atomizing housing 3 (eg Figure 5 The diameter of the smoke discharge passage is 20 to 30 mm, so as to ensure that the smoke can enter the smoke exhaust passage upward along the four sides with less resistance and evenly.

[0048] In this embodiment, the condensing heat exchange shell 1, the atomizing shell 3, and the condensed water treatment shell 41 are of an integrally formed structure. Of course, the condensing heat exchange shell 1, the atomizing shell 3, and the condensed water treatment shell 41 can also be formed separately and then assembled together.

[0049] The operation process of the gas water heater in the utility model is introduced below:

[0050] The hot flue gas enters the condensation heat exchange chamber 10 from the first smoke inlet 11, and is absorbed and preheated by the condensation heat exchanger 12 to precipitate condensed water;

[0051] The condensed water enters the condensed water treatment chamber 410 along the condensed water outlet on the bottom wall of the condensation heat exchange chamber 10, and is filtered and acid-neutralized to form treated water;

[0052] The treated water gradually enters the atomizing chamber 31 along the drainage channel 412 and the first water inlet 33, and the treated water level in the atomizing chamber 31 continues to rise until the treated water level reaches the trigger water level H2 in the atomizing chamber 31 (eg, Figure 5 and Figure 6 As shown in FIG. 1 ), the first water level monitoring element (the first water level monitoring element is electrically connected to the controller A) sends a trigger signal, and the controller A controls the atomizing device 5 to start atomization according to the trigger signal. If the atomization speed is less than the water inlet speed of the treated water, the treated water level in the atomizing chamber 31 will continue to rise, and the atomizing device 5 will remain in the started state. Preferably, the water level in the atomizing chamber 31 is maintained at the optimal water level H3 (as shown in FIG. Figure 5 and Figure 6 As shown in FIG. 1 ), the optimal water level H3 is not a specific value, but a value range. The specific treatment water level range is 30 mm to 45 mm to ensure the maximum amount of fog and fog output effect. When the water inlet speed of the treatment water is lower than the atomization speed, the treatment water level in the atomization chamber 31 will gradually decrease. When the water level drops to the stop water level H1 in the atomization chamber 31 (as shown in FIG. 1 ), the optimal water level H3 is not a specific value, but a value range. The specific treatment water level range is 30 mm to 45 mm to ensure the maximum amount of fog and fog output effect. Figure 5 and Figure 6 When the atomizing device 5 fails or there is scale on the atomizing head, the atomizing amount is small, causing the atomizing speed to be lower than the water inlet speed. Then, the treated water level in the atomizing chamber 31 will continue to fluctuate and rise, and finally reach the second water level monitoring element 9 (as shown in FIG. 1 ) on the condensing heat exchanger 12. Figure 1 When the (second water level monitoring element 9 is electrically connected to the controller A) position, the second water level monitoring element sends out an alarm signal. After the machine determines by itself that the water level has not dropped after the treatment, the controller A will send out a fault prompt based on this alarm signal to remind the user to switch to the emergency treatment mode of taking over the discharge. Specifically, open the drain valve and connect the drain pipe to discharge the condensed water to avoid the water heater from shutting down immediately and affecting the user's usage needs at that moment. When the emergency treatment mode of taking over the discharge also has blockage and other faults causing poor drainage, the second water level monitoring element detects that the water level continues to rise, and the second water level monitoring element sends out a water heater shutdown signal. Controller A controls the water heater to stop working based on this water heater shutdown signal to prevent the water level from continuing to rise and overflowing the condensing heat exchanger 12 and then entering the fan C and other components of the water heater to avoid damage to the water heater.

[0053] When the water heater is finished using, it will enter the post-cleaning atomization mode, and the untreated condensed water during use will be promptly processed through the post-cleaning atomization mode to complete the closed loop.

[0054] In the utility model, since the second smoke inlet 21 on the first smoke exhaust shell 2 is opposite to the fog outlet 32 ​​of the atomizing shell 3 and is located below the first smoke inlet 11 of the condensing heat exchange shell 1, the flow path of the water mist formed after the condensed water is atomized by the atomizing device 5 is extended, and the flue gas airflow is avoided from directly blowing the root of the fog group formed by the atomizing device 5, and the fog is avoided from being blown to the single-side cavity wall by the flue gas turbulence for liquefaction and aggregation, thereby ensuring a better fogging effect and being discharged smoothly with the flue gas.

[0055] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A condensing heat exchange device, characterized in that: It comprises a condensing heat exchange shell (1), a first smoke exhaust shell (2), an atomizing shell (3), and an atomizing device (5); A condensation heat exchange chamber (10) is provided in the condensation heat exchange shell (1), and a first smoke inlet (11) communicating with the condensation heat exchange chamber (10) is provided on the condensation heat exchange shell (1); An atomizing chamber (31) is provided in the atomizing shell (3), and a first water inlet (33) and a mist outlet (32) are provided on the atomizing shell (3), which are respectively connected to the atomizing chamber (31); the mist outlet (32) is provided at the top end of the atomizing shell (3), and the top end of the atomizing shell (3) extends into the condensation heat exchange chamber (10), the first water inlet (33) is connected to the bottom of the condensation heat exchange chamber (10), and the atomizing device (5) is installed at the bottom of the atomizing chamber (31); The bottom end of the first smoke exhaust shell (2) extends into the condensation heat exchange chamber (10) and is provided with a second smoke inlet (21), and the top end extends out of the condensation heat exchange chamber (10) and is provided with a smoke exhaust port (22). The first smoke exhaust shell (2) is provided with a first smoke exhaust chamber, and the second smoke inlet (21) and the smoke exhaust port (22) are respectively connected to the first smoke exhaust chamber, the second smoke inlet (21) is opposite to the mist exhaust port (32), and the second smoke inlet (21) is located at a lower position than the first smoke inlet (11).

2. The condensing heat exchange device according to claim 1, characterized in that: The top end surface of the atomizing housing (3) is an inclined surface, and the inclined surface is arranged toward a side facing away from the first smoke inlet (11).

3. The condensing heat exchange device according to claim 2, characterized in that: The angle α between the inclined plane and the horizontal plane is 5 degrees to 10 degrees.

4. The condensing heat exchange device according to claim 1, characterized in that: It also includes a second smoke exhaust shell (6), the second smoke exhaust shell (6) is provided with a second smoke exhaust cavity, and the two ends of the second smoke exhaust shell (6) are respectively provided with openings connected to the second smoke exhaust cavity; the second smoke exhaust shell (6) is sleeved in the first smoke exhaust shell (2) with a gap, the top end of the second smoke exhaust shell (6) extends into the first smoke exhaust shell (2), and the bottom end extends out of the first smoke exhaust shell (2), and the opening at the bottom end of the second smoke exhaust shell (6) is opposite to the mist exhaust port (32).

5. The condensing heat exchange device according to claim 4, characterized in that: The ratio of the first gas flow area of ​​the second smoke exhaust housing (6) to the second gas flow area between the inner wall of the first smoke exhaust housing (2) and the outer wall of the second smoke exhaust housing (6) is 1.65 to 1.

9.

6. The condensing heat exchange device according to claim 4, characterized in that: The vertical distance H between the bottom end surface of the second smoke exhaust housing (6) and the top end surface of the atomizing housing (3) is 20 mm to 30 mm.

7. The condensation heat exchange device according to any one of claims 1 to 6, characterized in that: The invention also comprises a condensate treatment component (4), wherein the condensate treatment component (4) comprises a condensate treatment shell (41) and a filter element component (42), wherein the condensate treatment shell (41) is fixedly connected to the outer bottom of the condensate heat exchange shell (1); a condensate treatment chamber (410) is provided in the condensate treatment shell (41), and a second water inlet (411) and a drainage channel (412) are provided on the condensate treatment shell (41), which are respectively connected to the condensate treatment chamber (410); the second water inlet (411) is connected to the bottom of the condensate heat exchange chamber (10), and the drainage channel (412) is connected to the first water inlet (33); the filter element component (42) comprises a filter element (421) and a neutralization filter element (422), and the filter element (421) and the neutralization filter element (422) are sequentially stacked in the condensate treatment chamber (410) along the flow direction of the condensate.

8. The condensing heat exchange device according to claim 7, characterized in that: The condensate treatment component (4) also includes a treatment chamber cover (414); the bottom of the condensate treatment shell (41) is provided with an installation opening for the filter element assembly (42) to be disassembled and assembled; the treatment chamber cover (414) can detachably seal the bottom end of the condensate treatment shell (41).

9. The condensing heat exchange device according to claim 7, characterized in that: The condensation heat exchange shell (1), the atomization shell (3) and the condensate treatment shell (41) are an integrally formed structure.

10. A gas water heater, characterized in that: It comprises the condensing heat exchange device according to any one of claims 1 to 9.

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