Gas water heater

Abstract

The utility model discloses a kind of gas water heaters, it relates to water heating technical field, gas water heater includes: condensing heat exchanger, condensing heat exchanger has heat exchange chamber and the condensing heat exchange pipeline in heat exchange chamber;Atomization component, atomization component includes: the shell formed with atomization cavity, condensate in heat exchange chamber can flow into atomization cavity, shell includes upper shell component, lower shell component and sealing element, sealing element has the first sealing portion extending along vertical direction and the second sealing portion extending along horizontal direction, upper shell component realizes the sealing with lower shell component in horizontal direction by the first sealing portion, upper shell component realizes the sealing with lower shell component in vertical flat direction by the second sealing portion;Upper shell component realizes the sealing between lower shell component in circumferential direction by sealing element.This application can solve the problem of local sealing not strict caused by deformation of upper shell component and lower shell component.

Description

Technical Field

[0001] This utility model relates to the field of water heating technology, and in particular to a gas water heater. Background Technology

[0002] Existing technologies generally add a condensing heat exchanger downstream of the main heat exchanger in gas water heaters. This utilizes the heat exchange between the condensing heat exchanger and the flue gas to further recover heat from the flue gas, thereby effectively improving the overall energy efficiency of the gas water heater. When water flows through the condensing heat exchanger and exchanges heat with the flue gas, water vapor in the flue gas precipitates due to the cooling effect, forming condensate on the surface of the heat exchange tubes of the condensing heat exchanger. To avoid the need for an external drain pipe to discharge the condensate and reduce the complexity of gas water heater installation, existing technologies incorporate a condensate atomizing device inside the gas water heater. This device atomizes the condensate, allowing the atomized condensate to be discharged along with the flue gas.

[0003] Existing condensate atomizing devices typically consist of a mating upper shell and a base, which together form an atomizing chamber for collecting condensate dripping from the heat exchanger tubes. Currently, the industry commonly uses a horizontal end-face sealing structure to seal the connection between the upper shell and the base. However, this sealing method has significant drawbacks in practical applications: due to the large circumferential dimension of the horizontal end face, and the limited number of circumferentially distributed screws used for fixing the upper shell and base, unevenness at the connection point can prevent a complete seal, leading to gaps and ultimately leakage. This is especially true when the upper shell is made of stainless steel, where the horizontal end face at the connection point is more prone to deformation. This problem not only affects the operational stability of the condensate atomizing device, but the leaked condensate can also damage the internal electrical components of the gas water heater, severely restricting the product reliability and market promotion of condensing gas water heaters.

[0004] Therefore, optimizing the sealing structure of the condensate atomizing device and solving the leakage problem caused by the deformation of the base on the horizontal end face seal has become a technical pain point that urgently needs to be addressed in this field. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a gas water heater that can solve the problem of poor sealing between the base and the upper shell due to deformation.

[0006] The specific technical solution of this utility model embodiment is as follows:

[0007] A gas water heater, the gas water heater comprising:

[0008] A condensing heat exchanger having a heat exchange chamber and condensing heat exchange piping located in the heat exchange chamber;

[0009] An atomizing assembly includes: a housing having an atomizing chamber, wherein condensate in a heat exchange chamber can flow into the atomizing chamber; the housing includes an upper housing assembly, a lower housing assembly, and a sealing element; the sealing element has a first sealing portion extending vertically and a second sealing portion extending horizontally; the upper housing assembly achieves a horizontal seal with the lower housing assembly through the first sealing portion; the upper housing assembly achieves a vertical seal with the lower housing assembly through the second sealing portion; and the upper housing assembly achieves a circumferential seal with the lower housing assembly through the sealing element.

[0010] Preferably, one of the upper housing assembly and the lower housing assembly has an annular recess and the other has an annular insert, the insert being able to extend into the recess, the seal being disposed within the recess, and the insert being sealing the first inner wall of the recess in the horizontal direction through the first sealing portion.

[0011] Preferably, when the seal and the recess are separated, the first seal has an angle with respect to the vertical direction.

[0012] Preferably, when the seal and the recess are separated, the width of the seal at its widest point in the horizontal direction is greater than the width of the recess.

[0013] Preferably, the vertical end of the embedded part is sealed to the bottom wall of the recessed part in the vertical direction by the second sealing part.

[0014] Preferably, the end face of the second sealing portion facing the vertical end of the embedded portion has a first protrusion; and / or,

[0015] The end face of the second sealing part facing the bottom wall of the recess has a second protrusion.

[0016] Preferably, the seal has a third sealing portion extending in a vertical direction, and the embedded portion achieves a horizontal seal with the second inner sidewall of the recessed portion through the third sealing portion, the second inner sidewall being disposed opposite to the first inner sidewall; in the horizontal direction, the embedded portion is located between the first sealing portion and the third sealing portion; the first sealing portion, the second sealing portion and the third sealing portion form a groove, and the embedded portion is embedded in the groove.

[0017] Preferably, when the seal and the recess are separated, the width of the groove in the horizontal direction gradually increases from the bottom wall of the groove towards the opening of the groove.

[0018] Preferably, when the seal and the recess are separated, the width of the opening of the groove in the horizontal direction is greater than the width of the top of the insert.

[0019] Preferably, the upper housing assembly includes an upper housing body forming at least a portion of the atomizing cavity and a connector having the recessed portion. The upper housing body is made of a metal material, the connector is made of a metal material, and the connector and the upper housing body are welded together. The connector is disposed on the periphery of the upper housing body.

[0020] Preferably, the lower housing assembly is made of plastic material.

[0021] Preferably, the connector has a first extension extending radially outward in the circumferential direction, and the lower housing assembly has a second extension extending radially outward in the circumferential direction. The first extension and the second extension cooperate with each other and are connected and fixed by fasteners. There are multiple fasteners, which are distributed around the circumferential direction of the connector. Both the first extension and the second extension have through holes, and the fasteners pass through the through holes of the first extension and the second extension to lock and fix the first extension and the second extension in the vertical direction.

[0022] Preferably, the heat exchange chamber and the atomizing chamber share the same housing, and the heat exchange chamber and the condensation heat exchange pipeline are disposed within the housing; or,

[0023] The condenser heat exchanger includes an outer shell forming the heat exchange chamber, the outer shell being independent of the housing, and the heat exchange chamber being connected to the atomizing chamber via a connecting structure, so that the condensate in the heat exchange chamber can flow into the atomizing chamber.

[0024] The technical solution of this utility model has the following significant beneficial effects:

[0025] In this application, condensate from the condenser heat exchange pipes of the gas water heater falls into the heat exchange chamber and flows into the atomizing chamber of the atomizing assembly. Because the upper housing assembly of the atomizing assembly achieves a seal with the lower housing assembly in the circumferential direction through the sealing element, and with the double seal of the first sealing part extending vertically and the second sealing part extending horizontally, the upper housing assembly achieves a horizontal seal with the lower housing assembly through the first sealing part, and a vertical seal with the lower housing assembly through the second sealing part. Therefore, even if any part of the upper or lower housing assembly deforms due to gravity, either the first or second sealing part can still ensure the seal between the upper and lower housing assemblies, preventing leakage.

[0026] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0027] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0028] Figure 1 This is a schematic diagram of the structure of the gas water heater in the embodiment of this utility model;

[0029] Figure 2 This is a schematic diagram of the structure of the condenser heat exchanger and atomizing component in the embodiment of this utility model;

[0030] Figure 3 This is a schematic diagram of the atomizing component in an embodiment of the present invention;

[0031] Figure 4 for Figure 3 Enlarged view of a portion of the central sealing element;

[0032] Figure 5 This is a cross-sectional view of the sealing element in an embodiment of this utility model.

[0033] The reference numerals in the above figures are as follows:

[0034] 1. Combustion device; 2. Main heat exchanger; 3. Condensing heat exchanger; 31. Heat exchange chamber; 32. Condensing heat exchange pipeline; 33. Outer shell; 4. Fan; 5. Atomizing assembly; 51. Atomizing chamber; 52. Shell; 521. Upper shell assembly; 5211. Upper shell body; 52111. Limiting part; 5212. Connecting part; 52121. First extension part; 522. Lower shell assembly; 5221. Second extension part; 523. Sealing part; 5231. First sealing part; 5232. Second sealing part; 52321. First protrusion part; 52322. Second protrusion part; 5233. Third sealing part; 5234. Groove; 524. Recessed part; 525. Embedded part; 526. Fixing part; 53. Atomizing component. Detailed Implementation

[0035] The details of this utility model can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of this utility model described herein are for illustrative purposes only and should not be construed as limiting the utility model in any way. Under the teachings of this utility model, those skilled in the art can conceive of any possible modifications based on this utility model, and these should all be considered to fall within the scope of this utility model.

[0036] In order to solve the problem of localized poor sealing caused by deformation of the upper and lower housing assemblies, this application proposes a gas water heater. Figure 1 This is a schematic diagram of the structure of the gas water heater in an embodiment of this utility model. Figure 2 This is a schematic diagram of the structure of the condenser heat exchanger and atomizing component in an embodiment of this utility model. Figure 3 This is a schematic diagram of the atomizing component in an embodiment of the present invention. Figure 4 for Figure 3 A magnified view of a portion of the sealing element, as shown below. Figures 1 to 4As shown, the gas water heater may include: a condensing heat exchanger 3, which has a heat exchange chamber 31 and a condensing heat exchange pipe 32 located in the heat exchange chamber 31; and an atomizing assembly 5, which includes: a shell 52 forming the atomizing chamber 51, through which condensate in the heat exchange chamber 31 can flow into the atomizing chamber 51; the shell 52 includes an upper shell assembly 521, a lower shell assembly 522, and a sealing member 523; the sealing member 523 has a first sealing portion 5231 extending in the vertical direction and a second sealing portion 5232 extending in the horizontal direction; the upper shell assembly 521 achieves a horizontal seal with the lower shell assembly 522 through the first sealing portion 5231, and the upper shell assembly 521 achieves a vertical seal with the lower shell assembly 522 through the second sealing portion 5232; the upper shell assembly 521 achieves a circumferential seal with the lower shell assembly 522 through the sealing member 523.

[0037] In this application, the condensate formed in the condenser heat exchange pipe 32 of the gas water heater falls into the heat exchange chamber 31 and flows into the atomizing chamber 51 of the atomizing assembly 5. Since the upper shell assembly 521 of the atomizing assembly 5's housing 52 achieves a seal with the lower shell assembly 522 in the circumferential direction through a seal 523, and with the double seal of the first sealing part 5231 extending vertically and the second sealing part 5232 extending horizontally, the upper shell assembly 521 achieves a horizontal seal with the lower shell assembly 522 through the first sealing part 5231, and a vertical seal with the lower shell assembly 522 through the second sealing part 5232. Therefore, even if any part of the upper shell assembly 521 or the lower shell assembly 522 deforms due to gravity, either the first sealing part 5231 or the second sealing part 5232 can still ensure the sealing between the upper shell assembly 521 and the lower shell assembly 522, preventing leakage.

[0038] like Figure 1 and Figure 2As shown, a gas water heater may include: a condensing heat exchanger 3 and an atomizing assembly 5. The condensing heat exchanger 3 is located downstream of the main heat exchanger 2 along the flue gas flow direction. The condensing heat exchanger 3 has a heat exchange chamber 31 and a condensing heat exchange pipe 32 located in the heat exchange chamber 31. The main heat exchange pipe of the main heat exchanger 2 and the condensing heat exchange pipe 32 of the condensing heat exchanger 3 are connected, and water flowing into the gas water heater flows at least partially through the condensing heat exchange pipe 32 of the condensing heat exchanger 3 and the main heat exchange pipe of the main heat exchanger 2 in sequence. The gas water heater may include: a combustion device 1, which provides heat energy; and a main heat exchanger 2, which is located downstream of the combustion device 1 along the flue gas flow direction. The flue gas generated by the combustion of the combustion device 1 flows into the condenser heat exchanger 3 after heat exchange in the main heat exchanger 2. When the flue gas encounters the condenser heat exchange pipe 32, condensate will form on the surface of the condenser heat exchange pipe 32. The condensate will drip onto the bottom of the heat exchange chamber 31. Then, when the condensate in the heat exchange chamber 31 exceeds a certain level or the condensate in the atomizing chamber 51 is too little, it will flow into the atomizing chamber 51.

[0039] like Figure 2 As shown, the atomizing assembly 5 may include: a housing 52 forming an atomizing chamber 51; an atomizing element 53 capable of atomizing the condensate in the atomizing chamber 51, etc. In one feasible embodiment, the heat exchange chamber 31 and the atomizing chamber 51 share the same housing 52, and the heat exchange chamber 31 and the condensation heat exchange pipeline 32 are disposed in the housing 52. In another feasible embodiment, the condensation heat exchanger 3 includes a shell 33 forming the heat exchange chamber 31, the shell 33 and the housing 52 are independent of each other, and the heat exchange chamber 31 is connected to the atomizing chamber 51 through a communicating structure so that the condensate in the heat exchange chamber 31 can flow into the atomizing chamber 51. The atomizing chamber 51 and the heat exchange chamber 31 are arranged side by side in the horizontal direction, forming a communicating vessel structure, and the liquid level of the condensate in both is kept consistent.

[0040] like Figures 2 to 4 As shown, the housing 52 includes an upper housing assembly 521, a lower housing assembly 522, and a seal 523. The seal 523 has a first sealing portion 5231 extending vertically and a second sealing portion 5232 extending horizontally. The upper housing assembly 521 achieves a horizontal seal with the lower housing assembly 522 through the first sealing portion 5231, and a vertical seal with the lower housing assembly 522 through the second sealing portion 5232. To ensure a circumferential seal, the upper housing assembly 521 achieves a circumferential seal with the lower housing assembly 522 through the seal 523.

[0041] To achieve the above objectives, in one alternative implementation, such as Figure 4As shown, one of the upper housing assembly 521 and the lower housing assembly 522 has an annular recess 524, and the other has an annular insert 525. The insert 525 can extend into the recess 524. A seal 523 is disposed within the recess 524. The insert 525 achieves a horizontal seal with the first inner wall of the recess 524 through the first sealing part 5231. In this embodiment, since the insert 525 achieves a horizontal seal with the first inner wall of the recess 524 through the first sealing part 5231, when either the upper housing assembly 521 or the lower housing assembly 522 undergoes local deformation in the vertical direction due to gravity, there will be no problem of poor sealing between the upper housing assembly 521 and the lower housing assembly 522.

[0042] Figure 5 This is a cross-sectional view of the sealing element in an embodiment of this utility model, as shown below. Figure 5 As shown, when the seal 523 and the recess 524 are separated, the first sealing portion 5231 has an angle with the vertical direction. This structure causes the first sealing portion 5231 to tend to tilt towards the first inner wall of the recess 524. Thus, when the seal 523 is inserted into the recess 524, the first sealing portion 5231 of the seal 523 deforms and abuts against the first inner wall of the recess 524, thereby improving the sealing performance between the first sealing portion 5231 and the first inner wall of the recess 524. In this embodiment, when the seal 523 and the recess 524 are separated, the width of the seal 523 at its widest point in the horizontal direction is greater than the width of the recess 524, thereby ensuring that the first sealing portion 5231 of the seal 523 deforms after the seal 523 is inserted into the recess 524.

[0043] In one alternative implementation, such as Figure 4 As shown, the vertical end of the embedded part 525 is sealed to the bottom wall of the recessed part 524 in the vertical direction via the second sealing part 5232. In this manner, the upper housing assembly 521 can be sealed to the lower housing assembly 522 in the vertical direction via the second sealing part 5232.

[0044] In the above embodiments, such as Figure 4 As shown, the end face of the second sealing part 5232 facing the vertical end of the embedded part 525 may have a first protrusion 52321. The above structure can improve the sealing effect of the second sealing part 5232 and the embedded part 525 in the vertical direction.

[0045] In the above embodiments, such as Figure 4As shown, the end face of the second sealing part 5232 facing the bottom wall of the recessed part 524 may have a second protrusion 52322. The above structure can improve the sealing effect of the second sealing part 5232 and the recessed part 524 in the vertical direction.

[0046] In one alternative implementation, such as Figure 4 As shown, the seal 523 has a third sealing portion 5233 extending vertically. The insert 525 achieves a horizontal seal with the second inner wall of the recess 524 via the third sealing portion 5233, the second inner wall being disposed opposite to the first inner wall. This structure forms a double seal in the horizontal direction, thereby improving the sealing effect of the entire upper housing assembly 521 and lower housing assembly 522 achieved by the seal 523. In this embodiment, the insert 525 may be located between the first sealing portion 5231 and the third sealing portion 5233 in the horizontal direction. The first sealing portion 5231, the second sealing portion 5232, and the third sealing portion 5233 form a groove 5234, and the insert 525 is embedded in the groove 5234.

[0047] In the above embodiment, when the seal 523 and the recess 524 are separated, the width of the groove 5234 in the horizontal direction gradually increases from the bottom wall of the groove 5234 towards the opening of the groove 5234. Alternatively, when the seal 523 and the recess 524 are separated, the width of the opening of the groove 5234 in the horizontal direction is greater than the width of the top of the insert 525. This facilitates easy and quick insertion of the insert 525 into the groove 5234 during installation.

[0048] To facilitate the formation of the recess 524 in the upper housing assembly 521, in an alternative embodiment, such as Figure 4 As shown, the upper housing assembly 521 may include an upper housing body 5211 forming at least a portion of the atomizing chamber 51 and a connector 5212 having a recess 524. The upper housing body 5211 is made of metal, and the connector 5212 is also made of metal, allowing for a welded connection between the connector 5212 and the upper housing body 5211, thus improving the ease of connection and sealing. To facilitate manufacturing and minimize water accumulation in the gap between the upper housing body 5211 and the connector 5212, the connector 5212 is positioned on the periphery of the upper housing body 5211. Alternatively, the lower housing assembly 522 may be made of plastic, which not only reduces costs but also minimizes deformation of the lower housing assembly 522 and facilitates the installation of the atomizing element 53 within the atomizing assembly 5.

[0049] To achieve a fixed connection between the upper housing assembly 521 and the lower housing assembly 522, in one optional embodiment, such as... Figure 4 As shown, the connector 5212 has a first extension 52121 extending radially outward in the circumferential direction, and the lower housing assembly 522 has a second extension 5221 extending radially outward in the circumferential direction. The first extension 52121 and the second extension 5221 cooperate with each other and are connected and fixed by a fastener 526. To ensure sealing at all positions in the circumferential direction, there can be multiple fasteners 526, which are distributed around the circumferential direction of the connector 5212. Furthermore, both the first extension 52121 and the second extension 5221 have through holes. The fastener 526 passes through the through holes of the first extension 52121 and the second extension 5221 to lock and fix the first extension 52121 and the second extension 5221 in the vertical direction.

[0050] In one alternative implementation, such as Figure 4 As shown, the outer side wall of the upper housing body 5211 has a limiting part 52111, and the upper end of the connector 5212 abuts against the limiting part 52111 in the vertical direction. In this way, the connection accuracy of the connector 5212 when it is connected to the outer side wall of the upper housing body 5211 can be improved, especially the connection accuracy in the vertical direction. This improves the sealing accuracy of the lower housing assembly 522 when it is sealed with the connector 5212 through the sealing member 523, thereby enhancing the sealing effect.

[0051] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified element, component, part, or step, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute “may” include is optional. Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The disclosure of “a” or “an” used to describe an element, component, part, or step does not imply exclusion of other elements, components, parts, or steps.

[0052] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A gas water heater, characterized in that, The gas water heater includes: A condensing heat exchanger having a heat exchange chamber and condensing heat exchange piping located in the heat exchange chamber; An atomizing assembly includes: a housing having an atomizing chamber, wherein condensate in a heat exchange chamber can flow into the atomizing chamber; the housing includes an upper housing assembly, a lower housing assembly, and a sealing element; the sealing element has a first sealing portion extending vertically and a second sealing portion extending horizontally; the upper housing assembly achieves a horizontal seal with the lower housing assembly through the first sealing portion; the upper housing assembly achieves a vertical seal with the lower housing assembly through the second sealing portion; and the upper housing assembly achieves a circumferential seal with the lower housing assembly through the sealing element.

2. The gas water heater according to claim 1, characterized in that, One of the upper housing assembly and the lower housing assembly has an annular recess, and the other has an annular insert. The insert can extend into the recess, and the seal is disposed within the recess. The insert seals the first inner wall of the recess in the horizontal direction through the first sealing portion.

3. The gas water heater according to claim 2, characterized in that, When the seal and the recess are separated, the first seal has an angle with respect to the vertical direction.

4. The gas water heater according to claim 3, characterized in that, When the seal and the recess are separated, the width of the seal at its widest point in the horizontal direction is greater than the width of the recess.

5. The gas water heater according to claim 2, characterized in that, The vertical end of the embedded part is sealed to the bottom wall of the recessed part in the vertical direction by the second sealing part.

6. The gas water heater according to claim 5, characterized in that, The second sealing portion has a first protrusion on its end face facing the vertical end of the embedded portion; and / or, The end face of the second sealing part facing the bottom wall of the recess has a second protrusion.

7. The gas water heater according to claim 2, characterized in that, The seal has a third sealing portion extending in a vertical direction, and the embedded portion achieves a horizontal seal with the second inner sidewall of the recessed portion through the third sealing portion, the second inner sidewall being disposed opposite to the first inner sidewall; in the horizontal direction, the embedded portion is located between the first sealing portion and the third sealing portion; the first sealing portion, the second sealing portion and the third sealing portion form a groove, and the embedded portion is embedded in the groove.

8. The gas water heater according to claim 7, characterized in that, When the seal and the recess are separated, the width of the groove in the horizontal direction gradually increases from the bottom wall of the groove towards the opening of the groove.

9. The gas water heater according to claim 7, characterized in that, When the seal and the recess are separated, the width of the opening of the groove in the horizontal direction is greater than the width of the top of the embedded part.

10. The gas water heater according to claim 2, characterized in that, The upper housing assembly includes an upper housing body forming at least a portion of the atomizing cavity and a connector having the recessed portion. The upper housing body is made of a metal material, and the connector is made of a metal material. The connector and the upper housing body are welded together. The connector is disposed on the periphery of the upper housing body.

11. The gas water heater according to claim 10, characterized in that, The lower housing assembly is made of plastic material.

12. The gas water heater according to claim 10, characterized in that, The connector has a first extension extending radially outward in the circumferential direction, and the lower housing assembly has a second extension extending radially outward in the circumferential direction. The first extension and the second extension cooperate with each other and are connected and fixed by fasteners. There are multiple fasteners, which are distributed around the circumferential direction of the connector. Both the first extension and the second extension have through holes, and the fasteners pass through the through holes of the first extension and the second extension to lock and fix the first extension and the second extension in the vertical direction.

13. The gas water heater according to claim 1, characterized in that, The heat exchange chamber and the atomization chamber share the same housing, and the heat exchange chamber and the condensation heat exchange pipeline are disposed within the housing; or... The condenser heat exchanger includes an outer shell forming the heat exchange chamber, the outer shell being independent of the housing, and the heat exchange chamber being connected to the atomizing chamber via a connecting structure, so that the condensate in the heat exchange chamber can flow into the atomizing chamber.

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