Gas water heater and condensing heat exchanger

Abstract

The present invention discloses a gas water heater and a condensing heat exchanger thereof, the condensing heat exchanger comprising: a heat exchange chamber provided with a smoke inlet and a smoke outlet; a heat exchange component provided in the heat exchange chamber, condensed water generated on the heat exchange component flows to the bottom of the heat exchange chamber; an atomizing chamber connected to the heat exchange chamber, a condensed water output portion provided at the bottom of the heat exchange chamber, condensed water flowing out of the condensed water output portion flows into the atomizing chamber; a first flow channel connected to the atomizing chamber, the first flow channel is used to introduce smoke upstream of the smoke inlet or in the heat exchange chamber that has not completely exchanged heat with the heat exchange component into the atomizing chamber; an atomizing module, used to atomize the condensed water flowing into the atomizing chamber so that the condensed water forms water mist; the water mist flows out of the condensing heat exchanger along with the smoke flowing into the atomizing chamber. The present application can eliminate the condensed water discharge pipe, and can also prevent the water mist from secondary condensation during the process of being discharged outward through the smoke outlet pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of water heaters, and in particular to a gas water heater and a condensing heat exchanger thereof. Background Art

[0002] Existing water heaters mainly include: gas water heaters, solar water heaters, air energy heat pump water heaters and electric water heaters, etc. Among them, gas water heaters are a typical instant water heater, which mainly includes components such as a fan, a burner, and a heat exchanger.

[0003] During the use of the gas water heater, the high-temperature flue gas generated by the burner exchanges heat with the heat exchanger once, forming medium-temperature flue gas with a relatively high temperature. In the prior art, in order to make full use of the heat energy in the medium-temperature flue gas, a condensing heat exchanger is added to perform a secondary heat exchange between the medium-temperature flue gas and the condensing heat exchanger before being discharged. However, after the medium-temperature flue gas exchanges heat with the condensing heat exchanger, the flue gas temperature can drop below 100°C, which is prone to produce condensed water.

[0004] For the gas water heater with condensing heat exchanger (hereinafter referred to as condensing gas water heater), it is usually necessary to set a condensate discharge pipe so that the condensate can be discharged into the sewer through the condensate discharge pipe. However, the installation of the condensate discharge pipe requires pre-buried pipes or reserved installation holes in advance, which makes the gas water heater greatly affected by the installation environment factors, and the condensate discharge pipe is usually exposed to the external environment, affecting the appearance of the whole machine.

[0005] Therefore, it is necessary to provide a gas water heater and a condensing heat exchanger thereof to solve at least one of the above problems. Summary of the invention

[0006] In view of the defects of the prior art, a gas water heater and a condensing heat exchanger thereof are provided in an embodiment of the present invention, which can not only eliminate the condensed water discharge pipe, but also prevent the secondary condensation of water mist during the process of being discharged outward through the smoke outlet pipe.

[0007] The specific technical solution of the implementation mode of the present invention is:

[0008] A condensing heat exchanger for a gas water heater, the gas water heater comprising: a heat exchange chamber, the heat exchange chamber being provided with a flue gas inlet and a flue gas outlet; a heat exchange component being provided in the heat exchange chamber, water flowing into the heat exchange component can perform heat exchange with flue gas flowing into the heat exchange chamber; condensed water generated on the heat exchange component flows to the bottom of the heat exchange chamber; an atomization chamber, the heat exchange chamber being connected to the atomization chamber, a condensed water output portion being provided at the bottom of the heat exchange chamber, and condensed water flowing out of the condensed water output portion flows into the atomization chamber; a first flow channel, the first flow channel being connected to the atomization chamber, the first flow channel being used to introduce flue gas upstream of the flue gas inlet or in the heat exchange chamber that has not completely exchanged heat with the heat exchange component into the atomization chamber; an atomization module, the atomization module being used to atomize the condensed water flowing into the atomization chamber so that the condensed water forms water mist; the water mist flows out of the condensing heat exchanger along with the flue gas flowing into the atomization chamber.

[0009] In a preferred embodiment, the condensing heat exchanger also includes a condensed water processing chamber, which is respectively connected to the condensed water output part and the atomization chamber, and the condensed water flowing out of the condensed water output part flows into the atomization chamber after passing through the condensed water processing chamber.

[0010] In a preferred embodiment, the heat exchange chamber, the atomization chamber, and the condensate treatment chamber are arranged adjacent to each other, the condensate treatment chamber is located below the heat exchange chamber, and the atomization chamber is at least partially located below the heat exchange chamber.

[0011] In a preferred embodiment, the condensing heat exchanger further comprises a shell, and the heat exchange chamber, the atomization chamber and the condensed water processing chamber are formed in the shell.

[0012] In a preferred embodiment, the shell includes a first shell, a second shell, and a third shell, the heat exchange chamber is formed in the first shell, the condensate treatment chamber is formed in the second shell, and the atomization chamber is formed in the third shell.

[0013] In a preferred embodiment, the second shell is arranged below the first shell, the second shell is provided with a water inlet and a water outlet, the condensed water output portion is arranged at the bottom of the first shell, and the condensed water output portion is communicated with the water inlet.

[0014] In a preferred embodiment, the third shell is at least partially disposed below the first shell, the third shell is provided with a condensed water inlet, and the water outlet is communicated with the condensed water inlet.

[0015] In a preferred embodiment, the condensate output portion is connected to the water inlet or the condensate output portion is connected to the water inlet through a first pipe; the water outlet is connected to the condensate inlet or the water outlet is connected to the condensate inlet through a second pipe.

[0016] In a preferred embodiment, the heat exchange chamber is disposed adjacent to the atomization chamber, and a portion of the third shell separates the heat exchange chamber from the atomization chamber to form an isolation portion between the heat exchange chamber and the atomization chamber.

[0017] In a preferred embodiment, the condensing heat exchanger further comprises a second flow channel, the second flow channel is communicated with the atomization chamber, and the water mist flows out of the condensing heat exchanger through the second flow channel along with the flue gas flowing into the atomization chamber.

[0018] In a preferred embodiment, at least a portion of the second flow channel passes through the heat exchange chamber.

[0019] In a preferred embodiment, the atomization chamber is provided with an exhaust port, one end of the second flow channel is connected to the exhaust port, and the other end of the second flow channel extends to the vicinity of the smoke outlet.

[0020] In a preferred embodiment, the second flow channel is located above the atomization chamber.

[0021] In a preferred embodiment, the second flow channel is arranged in the third pipeline or the second flow channel is an independent flow channel isolated from the heat exchange chamber and formed between a partition in the heat exchange chamber and a shell wall of the condensing heat exchanger.

[0022] In a preferred embodiment, the smoke outlet is provided with a smoke outlet pipe, and the second flow channel is connected to the smoke outlet pipe.

[0023] In a preferred embodiment, the proportion of the cross-sectional area of ​​the smoke outlet occupied by the second flow channel ranges from 6% to 16%.

[0024] In a preferred embodiment, the atomization chamber is close to the smoke inlet, and the atomization chamber has a smoke inlet for communicating with the smoke inlet, and the smoke inlet is used to form at least a part of the first flow channel.

[0025] In a preferred embodiment, the ratio of the flow cross-sectional area of ​​the smoke inlet to the flow cross-sectional area of ​​the smoke inlet is between 5% and 15%.

[0026] In a preferred embodiment, at least a portion of the first flow channel passes through the heat exchange chamber.

[0027] In a preferred embodiment, the heat exchange component is a heat exchange tube, the first flow channel is formed in a fourth pipeline connected to the atomization chamber, and the fourth pipeline extends from the vicinity of the smoke inlet to the atomization chamber.

[0028] In a preferred embodiment, the fourth pipeline has a smoke inlet end close to the smoke inlet, and the ratio of the flow cross-sectional area of ​​the smoke inlet end to the flow cross-sectional area of ​​the smoke inlet is between 5% and 15%.

[0029] In a preferred embodiment, a neutralizer is provided in the condensed water treatment chamber to neutralize the condensed water generated on the heat exchange component.

[0030] In a preferred embodiment, the atomization module includes at least one ultrasonic atomizer, and the ultrasonic atomizer is arranged at the bottom of the atomization chamber.

[0031] In a preferred embodiment, the atomization chamber is provided with a water level detection device, and the start and stop of the atomization module are controlled according to the signal of the water level detection device.

[0032] In a preferred embodiment, the atomization chamber is provided with a water level detection device, and the condensed water inlet of the atomization chamber is lower than the detection water level of the water level detection device.

[0033] A gas water heater, comprising a condensing heat exchanger of any of the above-mentioned gas water heaters, and further comprising a main heat exchanger, wherein the flue gas after heat exchange with the main heat exchanger flows into the flue gas inlet.

[0034] In a preferred embodiment, the gas water heater further comprises a fan, which is arranged between the main heat exchanger and the condensing heat exchanger along the direction of flue gas flow; the fan drives the flue gas to flow into the heat exchange chamber from the flue gas inlet and out of the heat exchange chamber from the flue gas outlet, and the fan simultaneously drives part of the flue gas to flow into the atomization chamber through the first flow channel, so that the water mist in the atomization chamber flows out of the condensing heat exchanger along with the flue gas flowing into the atomization chamber.

[0035] The technical solution of the present invention has the following significant beneficial effects:

[0036] The condensing heat exchanger of the gas water heater provided in the embodiment of the present application is provided with an atomizing chamber connected with the heat exchange chamber, and the condensed water in the heat exchange chamber can flow into the atomizing chamber. At the same time, it is provided with a first flow channel to introduce the flue gas with higher temperature upstream of the flue gas inlet of the heat exchange chamber or in the heat exchange chamber into the atomizing chamber. When the gas water heater is in operation, the first flow channel can be used to introduce the flue gas with higher temperature into the atomizing chamber; the water mist generated after atomization by the atomizing module of the atomizing chamber is introduced into the flue gas in the atomizing chamber along the first flow channel and flows to the smoke outlet pipe, so that the condensing gas water heater can achieve condensation-free discharge, and the condensation water discharge pipe can be eliminated, thereby improving the aesthetics of the whole machine and solving the problem that the installation of the condensing gas water heater is limited due to the lack of pre-buried pipes or reserved installation holes.

[0037] Among them, for some special working conditions, such as when the external ambient temperature is low, and / or, affected by factors such as the long pipe of the smoke outlet pipe, the water mist in the smoke is prone to secondary condensation when flowing through the smoke outlet pipe. In the embodiment of the present application, since the smoke introduced into the atomization chamber by the first flow channel is medium-temperature smoke with a relatively high temperature, this part of the smoke from the upstream of the smoke inlet has not yet exchanged heat with the heat exchange components in the condensing heat exchanger, or this part of the smoke from the heat exchange chamber has not yet fully exchanged heat with the heat exchange components in the condensing heat exchanger. Therefore, when the flue gas with a higher temperature (hereinafter referred to as the target flue gas) flows into the atomization chamber through the first flow channel and drives the water mist in the atomization chamber to the smoke outlet pipe, even if the length of the smoke outlet pipe is long and / or the external ambient temperature is low, since the target flue gas temperature is relatively high, when it flows through the smoke outlet pipe, even if a certain temperature drop occurs, the condensed water mist carried by the target flue gas is not easy to undergo secondary condensation, thereby overcoming various problems that may arise after the secondary condensation of the condensed water mist, such as dripping at the smoke outlet.

[0038] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which 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. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents. Features described and / or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or replace features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0040] Figure 1 This is a schematic structural diagram of a condensing heat exchanger in a gas water heater provided in an embodiment of the present application;

[0041] Figure 2 An exploded diagram of a condensing heat exchanger in a gas water heater provided in an embodiment of the present application;

[0042] Figure 3 A cross-sectional view of a condensing heat exchanger in a gas water heater provided in an embodiment of the present application Figure 1 ;

[0043] Figure 4 A cross-sectional view of a condensing heat exchanger in a gas water heater provided in an embodiment of the present application Figure 2 ;

[0044] Figure 5 A cross-sectional view of a condensing heat exchanger in a gas water heater provided in an embodiment of the present application Figure 3 ;

[0045] Figure 6 This is a schematic diagram of the structure of a gas water heater provided in an embodiment of the present application.

[0046] Reference numerals of the present application:

[0047] 3. Condensing heat exchanger;

[0048] 30. First shell; 300. Heat exchange chamber; 301. Smoke inlet; 302. Smoke outlet;

[0049] 31. Heat exchange components;

[0050] 32. Condensate output part;

[0051] 33. Partition;

[0052] 50, third shell; 500, atomization chamber; 501, condensed water inlet; 502, smoke inlet; 503, exhaust port;

[0053] 54. Atomization module;

[0054] 81. Second shell; 800. Condensate treatment chamber; 801. Water inlet; 802. Water outlet;

[0055] 6. first flow channel; 601. smoke inlet end;

[0056] 7. Water level detection device;

[0057] 9. Second flow channel;

[0058] 2. Main heat exchanger;

[0059] 4. Fan. DETAILED DESCRIPTION

[0060] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0061] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0063] The present invention provides a gas water heater and a condensing heat exchanger thereof, which can not only eliminate a condensed water discharge pipe but also utilize the heat of flue gas to prevent secondary condensation of condensed water while ensuring heat exchange efficiency.

[0064] Please refer to Figures 1 to 5In the embodiment of the present application, a condensing heat exchanger 3 of a gas water heater is provided, and the condensing heat exchanger 3 may include: a heat exchange chamber 300, wherein the heat exchange chamber 300 is provided with a smoke inlet 301 and a smoke outlet 302; a heat exchange component 31 is provided in the heat exchange chamber 300, and the water flowing into the heat exchange component 31 can exchange heat with the smoke flowing into the heat exchange chamber 300; the condensed water generated on the heat exchange component 31 flows to the bottom of the heat exchange chamber 300; an atomizing chamber 500, wherein the heat exchange chamber 300 is connected to the atomizing chamber 500, and a cold air is provided at the bottom of the heat exchange chamber 300; A condensed water output portion 32, from which the condensed water flows into the atomizing chamber 500; a first flow channel 6, which is connected to the atomizing chamber 500, and is used to introduce the flue gas upstream of the flue gas inlet 301 or in the heat exchange chamber 300 that has not been completely heat exchanged with the heat exchange component 31 into the atomizing chamber 500; an atomizing module 54, which is used to atomize the condensed water flowing into the atomizing chamber 500 so that the condensed water forms water mist; the water mist flows out of the condensing heat exchanger 3 along with the flue gas flowing into the atomizing chamber 500.

[0065] The condensing heat exchanger 3 is used in a gas water heater, and the gas water heater with the condensing heat exchanger 3 is a condensing gas water heater. In addition to the condensing heat exchanger 3, the condensing gas water heater also includes: a main heat exchanger, a fan, a combustion device, etc.

[0066] The heat generated by the combustion of the gas by the combustion device is used to heat the fluid flowing through the main heat exchanger and the condensing heat exchanger 3. Specifically, the combustion device can be in the form of a burner with adjustable power.

[0067] The fan is used to provide a driving force for the airflow. Specifically, the fan is used to drive the high-temperature flue gas generated by the combustion device to flow through the main heat exchanger and the condensing heat exchanger 3 in sequence. Among them, the structure, form and setting position of the fan itself can vary according to different actual usage scenarios, and this application does not make specific limitations here. For example, along the height direction from top to bottom, the fan, the main heat exchanger and the combustion device can be arranged in sequence. In addition, the fan can specifically be in the form of a variable frequency fan. The speed of the fan can be adaptively changed with changes in conditions such as combustion load.

[0068] Specifically, the fan is arranged between the main heat exchanger and the condensing heat exchanger 3 along the flue gas flow direction; the fan drives the flue gas to flow from the flue gas inlet 301 into the heat exchange chamber 300 (the flue gas flowing into the heat exchange chamber 300 is Figure 1The smoke flows out of the heat exchange chamber 300 from the smoke outlet 302, and the fan drives part of the smoke to flow into the atomization chamber 500 through the first flow channel 6 (the smoke flowing into the first flow channel 6 is Figure 1 The water mist in the atomizing chamber 500 is mixed with the smoke (the mixture of smoke and water mist is represented by the thin arrow in the atomizing chamber 500) flowing into the atomizing chamber 500. Figure 1 (indicated by the dotted arrow in FIG. 1 ) flows out of the condensing heat exchanger 3.

[0069] The main heat exchanger and the condensing heat exchanger 3 are used to circulate water to be heated. Generally, the fluid can be water, but it is not excluded that it can also be a mixture of water and steam, or in the form of other fluids. In the following embodiments, the fluid is described by taking water as an example, and other fluid forms can be referred to by analogy, and this application will not repeat them here. The water flowing into the gas water heater from the outside can first flow through the condensing heat exchanger 3 for preheating, and then enter the main heat exchanger for substantial temperature increase.

[0070] The main heat exchanger and the condensing heat exchanger 3 are sequentially arranged along the flow direction of the flue gas. The main heat exchanger may be a heat exchanger relatively closer to the flue gas generation source (combustion device). The specific form of the main heat exchanger may be a finned heat exchanger or a tubular heat exchanger. Of course, the shape, structure, etc. of the main heat exchanger may vary according to different actual use scenarios, and this application does not make any specific limitation here.

[0071] The condensing heat exchanger 3 can be arranged downstream of the main heat exchanger along the flue gas flow direction. The high-temperature flue gas generated by the combustion device can be exchanged with the main heat exchanger to obtain medium-temperature flue gas, and the medium-temperature flue gas can flow through the condensing heat exchanger 3 and continue to exchange heat with the condensing heat exchanger 3, so that the heat in the flue gas is absorbed by the water in the condensing heat exchanger 3, and the temperature of the flue gas is further reduced.

[0072] The condensing gas water heater provided in the embodiment of the present application can ensure that the heat in the flue gas is fully absorbed by the fluid in the main heat exchanger and the condensing heat exchanger 3 by sequentially arranging the main heat exchanger and the condensing heat exchanger 3 along the flow direction of the flue gas, thereby ensuring that the gas water heater has high energy efficiency, and at the same time can also ensure that the exhaust flue gas has a lower temperature, thereby achieving the purpose of energy saving and environmental protection.

[0073] In this embodiment, the condensing heat exchanger 3 may include at least a relatively independent heat exchange chamber 300 and an atomizing chamber 500. The heat exchange chamber 300 is provided with a smoke inlet 301 and a smoke outlet 302, wherein the smoke inlet 301 is used to communicate with the outlet of the fan, and the smoke outlet 302 is provided with a smoke outlet pipe. A heat exchange component 31 is also provided in the heat exchange chamber 300, and specifically, the heat exchange component 31 may be in the form of a heat exchange tube. The water flowing into the heat exchange component 31 can exchange heat with the smoke flowing into the heat exchange chamber 300. The condensed water generated on the heat exchange component 31 will flow to the bottom of the heat exchange chamber 300 under the action of gravity. A condensed water output portion 32 is provided at the bottom of the heat exchange chamber 300, and the heat exchange chamber 300 is connected to the atomizing chamber 500, and the condensed water flowing out of the condensed water output portion 32 flows into the atomizing chamber 500.

[0074] Among them, the specific form of the condensate output part 32 may include a condensate output port arranged at the bottom of the heat exchange chamber 300, or the condensate output part 32 may include a connecting pipe arranged at the bottom of the heat exchange chamber 300, or the condensate output part 32 may include a joint arranged at the bottom of the heat exchange chamber 300. Of course, the specific setting method of the condensate output part 32 may also be other methods, and is not limited to the above description. Technical personnel in the relevant field may make other changes under the inspiration of the technical essence of this application, but as long as the functions and effects achieved are the same or similar to those of this application, they should be covered within the protection scope of this application.

[0075] The atomizing chamber 500 is provided with an atomizing module 54 , and the atomizing module 54 is used to atomize the condensed water flowing into the atomizing chamber 500 so that the condensed water forms water mist.

[0076] The specific form of the atomization module 54 may include at least one ultrasonic atomizer. The ultrasonic atomizer uses ultrasonic oscillation sound energy to make the particles on the surface of the condensed water fall off and become fine aerosol. The high-frequency current generated by the ultrasonic atomizer is converted into sound waves of the same frequency through the ultrasonic transducer, and directly acts on the condensed water through the ultrasonic film at the bottom of the atomization cylinder. When the ultrasonic energy reaches a certain value, the condensed water mist particles will overcome the surface tension and fly out, and then the mist particles will be sent out by the flue gas.

[0077] The output mist volume of the ultrasonic atomizer is large, and the droplets are small and uniform, which can better meet the needs of condensed water atomization. The condensed water can be efficiently atomized and can also be reliably led out by the flue gas. In addition, the aerosol volume of the ultrasonic atomizer can be adjusted. It can adjust the aerosol volume according to the actual working conditions to ensure that the imported flue gas is compatible with the aerosol generated by the ultrasonic atomizer, and ensure that the aerosol generated by the ultrasonic atomizer can be efficiently sent out by the imported flue gas.

[0078] Of course, in the embodiments of the present application, it is not excluded that the atomization module 54 is set in other forms, such as a jet atomizer or a vibrating mesh atomizer, etc., and the present application does not make the sole limitation here.

[0079] like Figure 4 or Figure 5 As shown, in one embodiment, the atomization chamber 500 is provided with a water level detection device 7 , and the start and stop of the atomization module 54 are controlled according to the signal of the water level detection device 7 .

[0080] In this embodiment, a water level detection device 7 may be provided in the atomizing chamber 500, and the water level detection device 7 is used to obtain the condensed water level in the atomizing chamber 500. By providing the water level detection device 7, the current water level of the atomizing chamber 500 can be accurately obtained, and the atomizing module 54 can be prevented from being dry-burned due to the water level being too low. In addition, the atomizing module 54 is provided with an atomizing sheet. By providing the water level detection device 7, the atomizing sheet can be immersed in the condensed water before starting to work, which can prevent the atomizing sheet from contacting the high temperature flue gas introduced into the atomizing chamber 500, thereby ensuring the reliability of the atomizing sheet and extending its service life. In addition, for the atomizing sheet, when it is working, it usually has a better working liquid level range, within which the atomizing sheet can achieve an ideal atomization efficiency. By providing the water level detection device 7, the current condensed water level can be accurately identified, so that the atomizing sheet works within a better working liquid level range, thereby achieving an ideal atomization effect.

[0081] Specifically, the water level detection device 7 can be connected to the controller of the gas water heater in communication, and the controller itself can be connected to the atomization module 54 in communication, and the working state of the atomization module 54 can be switched based on the condensed water level in the current atomization chamber 500 obtained by the water level detection device. For example, when the water level detection device detects that the condensed water level in the current atomization chamber 500 reaches a preset water level, the gas water heater is in operation at this time, and the controller can control the atomization module 54 to start the atomization function, atomize the condensed water, and use the flue gas introduced into the atomization chamber 500 to send the atomized water mist out of the gas water heater through the smoke outlet pipe.

[0082] In one embodiment, the atomization chamber 500 is provided with a water level detection device 7 , and the condensed water inlet 501 of the atomization chamber 500 is lower than the detection water level of the water level detection device 7 .

[0083] In this embodiment, a water level detection device 7 may be provided in the atomizing chamber 500, and the water level detection device 7 is used to obtain the condensed water level in the atomizing chamber 500. The condensed water inlet 501 of the atomizing chamber 500 is lower than the detection water level of the water level detection device 7. When the condensed water inlet 501 is set at a relatively low position, the condensed water flowing in from the condensed water inlet 501 can be efficiently gathered to the bottom of the atomizing chamber 500 in a shorter path; in addition, when the condensed water inlet 501 is lower than the detection water level of the water level detection device 7, the condensed water flowing in from the condensed water inlet 501 can be prevented from causing fluctuations in the liquid level in the atomizing chamber 500, thereby ensuring the reliability and accuracy of the detection of the water level detection device 7.

[0084] In this embodiment, the condensing heat exchanger 3 is provided with a first flow channel 6 connected to the atomization chamber 500, and the first flow channel 6 is used to introduce the flue gas upstream of the flue gas inlet 301 or in the heat exchange chamber 300 that has not been completely heat exchanged with the heat exchange component 31 into the atomization chamber 500.

[0085] The condensing heat exchanger 3 of the gas water heater provided in the embodiment of the present application is provided with an atomizing chamber 500 connected with the heat exchange chamber 300, so that the condensed water in the heat exchange chamber 300 can flow into the atomizing chamber 500, and at the same time, by providing a first flow channel 6, the flue gas upstream of the flue gas inlet 301 or in the heat exchange chamber 300 that has not been completely heat exchanged with the heat exchange component 31 can be introduced into the atomizing chamber 500. When the gas water heater is in operation, the first flow channel 6 can be used to introduce the flue gas upstream of the flue gas inlet 301 or in the heat exchange chamber 300 that has not been completely heat exchanged with the heat exchange component 31 into the atomizing chamber 500; the water mist generated after atomization by the atomizing module 54 in the atomizing chamber 500 is introduced into the flue gas in the atomizing chamber 500 along the first flow channel 6 and flows into the smoke outlet pipe, so that the condensing gas water heater can achieve condensate-free discharge, and the condensate discharge pipe can be eliminated, thereby improving the aesthetics of the entire machine and solving the problem that the installation of the condensing gas water heater is limited due to the lack of pre-buried pipes or reserved installation holes.

[0086] For the above-mentioned condensing gas water heater, the condensed water is atomized and then discharged with the flue gas, which can basically achieve the purpose of no condensed water discharge. However, in some specific scenarios, it will face further technical problems.

[0087] For example, when the high-temperature flue gas passes through the main heat exchanger and the condensing heat exchanger 3 and then flows through the atomization chamber 500, its temperature is usually relatively low. At this time, the flue gas with a relatively low temperature will contact the smoke outlet pipe when it is discharged outward with the water mist. When the external environment temperature is relatively low and / or, affected by factors such as a long smoke outlet pipe, the water mist in the flue gas is prone to secondary condensation.

[0088] The condensed water after the secondary condensation will accumulate in the smoke outlet pipe and flow under the action of gravity. For example, when the smoke outlet pipe is slightly tilted from the inside to the outside, the condensed water after the secondary condensation will drip outward, affecting the user experience.

[0089] In the embodiment of the present application, since the flue gas introduced into the atomization chamber 500 by the first flow channel 6 is medium-temperature flue gas with a relatively high temperature, the part of the flue gas from the upstream of the flue gas inlet 301 has not yet exchanged heat with the heat exchange component 31 in the condensing heat exchanger 3, or the part of the flue gas from the heat exchange chamber 300 has not yet fully exchanged heat with the heat exchange component 31 in the condensing heat exchanger 3. Specifically, the flue gas in the heat exchange chamber 300 that has not completely exchanged heat with the heat exchange component 31 specifically includes any one or a combination of the following: the flue gas flowing between the flue gas inlet 301 and the heat exchange component 31, the part of the flue gas has not yet exchanged heat with the heat exchange component 31; the flue gas flowing through part of the heat exchange component 31, the part of the flue gas has exchanged heat with part of the heat exchange component 31, but has not completely exchanged heat with the heat exchange component 31. Therefore, when the flue gas with higher temperature flows into the atomization chamber 500 through the first flow channel 6 and drives the water mist in the atomization chamber 500 to the smoke outlet pipe, even if the length of the smoke outlet pipe is long and / or the external ambient temperature is low, since the target flue gas temperature is relatively high, when it flows through the smoke outlet pipe, even if a certain temperature drop occurs, the condensed water mist carried by the target flue gas is not easy to undergo secondary condensation, thereby overcoming the various problems that may arise after the secondary condensation of the condensed water mist.

[0090] like Figure 1 or Figure 2 As shown, in one embodiment, the condensing heat exchanger 3 may further include a condensed water processing chamber 800, which is respectively connected to the condensed water output portion 32 and the atomization chamber 500, and the condensed water flowing out of the condensed water output portion 32 flows into the atomization chamber 500 after passing through the condensed water processing chamber 800.

[0091] In this embodiment, the condensing heat exchanger 3 is also provided with a condensed water processing chamber 800. On the flow path of the condensed water, the condensed water processing chamber 800 is arranged between the atomization chamber 500. The condensed water in the condensed water processing chamber 800 can first flow into the condensed water processing chamber 800, and after being processed in the condensed water processing chamber 800, the processed condensed water is guided to the atomization chamber 500.

[0092] The condensed water treatment chamber 800 is provided with a neutralizer to neutralize the condensed water generated on the heat exchange component 31 .

[0093] The neutralizing agent can be used to neutralize the condensed water generated on the heat exchange component 31. The condensed water is usually acidic, and the neutralizing agent is used to adjust the pH value of the condensed water. Specifically, when an alkaline neutralizing agent is added to the acidic condensed water, an acid-base neutralization reaction occurs, so that the pH value of the condensed water is adjusted to a neutral range. After the pH value of the condensed water is adjusted to a suitable range, the condensed water can meet the environmental emission requirements when it is subsequently atomized into water mist by the atomization module 54, and at the same time, the acidic condensed water can be prevented from corroding subsequent equipment (such as the atomization module 54) and the flow channel, that is, the atomization module 54 and the flow channel downstream of the atomization module 54 can be protected. In addition, the condensed water processing chamber 800 can also be provided with a filter medium, which can be used to intercept solid particles, make the condensed water clear, and reduce the turbidity of the condensed water. When the filtered condensed water flows to the atomization chamber 500, solid particulate impurities can be prevented from being deposited on the surface of the atomization module 54, thereby affecting the atomization efficiency of the atomization module 54.

[0094] In one embodiment, the heat exchange chamber 300 , the atomization chamber 500 , and the condensate treatment chamber 800 are arranged adjacent to each other, the condensate treatment chamber 800 is located below the heat exchange chamber 300 , and the atomization chamber 500 is at least partially located below the heat exchange chamber 300 .

[0095] In this embodiment, the heat exchange chamber 300, the atomization chamber 500 and the condensed water treatment chamber 800 can be arranged adjacent to each other, so that the overall structure of the condensing heat exchanger 3 can be compact and the flow path of the fluid can be shortened. Specifically, the heat exchange chamber 300, the atomization chamber 500 and the condensed water treatment chamber 800 can partially share some cavity walls, so as to further reduce the volume and weight.

[0096] The condensate treatment chamber 800 is located below the heat exchange chamber 300, so that the condensate flowing out of the condensate treatment chamber 800 can be more conveniently and efficiently received. The atomization chamber 500 is at least partially located below the heat exchange chamber 300. The atomization chamber 500 is used to receive the condensate after being processed by the condensate treatment chamber 800. The portion of the atomization chamber 500 used to receive the condensate can be adapted to the height of the condensate treatment chamber 800, so as to shorten the condensate flow path and make the structure more compact.

[0097] In a specific embodiment, the condensing heat exchanger 3 may further include a shell, and the heat exchange chamber 300, the atomization chamber 500 and the condensed water processing chamber 800 are formed in the shell.

[0098] In this embodiment, the condensing heat exchanger 3 may include a whole shell, the interior of which may be divided into different chambers, including a heat exchange chamber 300, an atomization chamber 500, and a condensed water treatment chamber 800. This ensures that the overall structure of the shell is reliable and has better sealing performance, and the manufacturing process is relatively simple and the manufacturing cost is low.

[0099] Of course, in other embodiments, at least one of the heat exchange chamber 300 , the atomization chamber 500 and the condensed water processing chamber 800 may also be formed by an independent sub-shell, and the independent sub-shell may be spliced ​​and fixed with other shells.

[0100] Among them, the shell of the condensing heat exchanger 3 may include a first shell 30, a second shell 81, and a third shell 50, the heat exchange chamber 300 is formed in the first shell 30, the condensed water processing chamber 800 is formed in the second shell 81, and the atomization chamber 500 is formed in the third shell 50.

[0101] In this embodiment, the shell of the condensing heat exchanger 3 includes a relatively separated first shell 30, a second shell 81 and a third shell 50. The interior of the first shell 30 is used to form a heat exchange chamber 300, and the heat exchange component 31 is arranged inside the first shell 30. The flue gas inlet 301 and the flue gas outlet 302 can be arranged on the first shell 30. The interior of the second shell 81 is used to form a condensate treatment chamber 800, and the water treatment medium such as a neutralizer for condensate treatment can be located inside the second shell 81. The second shell 81 is arranged below the first shell 30, and the condensate accumulated at the bottom of the first shell 30 can flow into the second shell 81 more conveniently and efficiently under the action of gravity. Specifically, the top of the second shell 81 can be installed on the bottom of the first shell 30, and the two are arranged close to each other, which can not only make the structure more compact and require less space, but also help shorten the flow path of the condensate.

[0102] Among them, the second shell 81 is provided with a water inlet 801 and a water outlet, the condensed water output part 32 is arranged at the bottom of the first shell 30, the water inlet 801 of the second shell 81 can be arranged at the top of the second shell 81, and the condensed water output part 32 is connected to the water inlet 801.

[0103] Specifically, the condensed water output portion 32 is connected to the water inlet 801 or the condensed water output portion 32 is connected to the water inlet 801 through a first pipeline.

[0104] For example, when the condensate output portion 32 is connected to the water inlet 801, a docking structure may be formed between the water inlet 801 of the second shell 81 and the condensate output portion 32. For example, the condensate output portion 32 may be inserted into the water inlet 801 so that the condensate can be introduced into the second shell 81 without external leakage. When the condensate output portion 32 is connected to the water inlet 801 of the second shell 81, the convenience of installation can also be improved and the work intensity of the installer can be reduced.

[0105] In addition, the condensed water output part 32 can be connected to the water inlet 801 of the second shell 81 through a first pipe. One end of the first pipe is connected to the condensed water output part 32, and the other end is connected to the water inlet 801 of the second shell 81, so as to guide the condensed water flowing out of the condensed water output part 32 to the water inlet 801 of the second shell 81.

[0106] Furthermore, in order to ensure the sealing performance between the water inlet 801 and the condensed water output portion 32 , a sealing structure may be provided between the water inlet 801 and the condensed water output portion 32 .

[0107] Of course, the coordination between the condensate output part 32 and the water inlet 801 can be other ways and is not limited to the above description. Technical personnel in the relevant field may make other changes inspired by the technical essence of this application, but as long as the functions and effects achieved are the same or similar to those of this application, they should be covered within the scope of protection of this application.

[0108] The interior of the third housing 50 is used to form an atomization chamber 500, and the atomization module 54 can be disposed in the third housing 50. Specifically, the atomization module 54 can be disposed at the bottom of the third housing 50, so that the condensed water in the third housing 50 can be fully atomized.

[0109] The third housing 50 is provided with a condensed water inlet 501, and the water outlet 802 of the second housing 81 is connected to the condensed water inlet 501. The third housing 50 is at least partially arranged below the first housing 30, and the atomization chamber 500 formed in the third housing 50 is used to receive the condensed water after being treated by the water treatment medium in the second housing 81, and the portion used to receive the condensed water can be adapted to the height of the second housing 81, so as to shorten the flow path of the condensed water and make the structure more compact.

[0110] The water outlet 802 is connected to the condensed water inlet 501 or the water outlet 802 is connected to the condensed water inlet 501 through a second pipeline.

[0111] For example, when the water outlet 802 of the second shell 81 is connected to the condensed water inlet 501, a docking structure may be formed between the water outlet 802 of the second shell 81 and the condensed water inlet 501. For example, the water outlet 802 of the second shell 81 may be inserted into the condensed water inlet 501, so that the condensed water can be efficiently introduced into the third shell 50. When the condensed water inlet 501 is connected to the water outlet 802 of the second shell 81, the convenience of installation can also be improved, and the work intensity of the installer can be reduced.

[0112] In addition, the condensate inlet 501 can be connected to the water outlet 802 of the second shell 81 through a second pipe. One end of the second pipe is connected to the water outlet 802, and the other end is connected to the condensate inlet 501, so as to guide the condensate flowing out of the water outlet 802 to the condensate inlet 501 of the third shell 50.

[0113] Furthermore, in order to ensure the sealing performance between the water outlet 802 and the condensed water inlet 501 , a sealing structure may be provided between the water outlet 802 and the condensed water inlet 501 .

[0114] Of course, the coordination between the water outlet 802 of the second shell 81 and the condensed water inlet 501 can also be other ways, and is not limited to the above description. Technical personnel in the relevant field may make other changes inspired by the technical essence of this application, but as long as the functions and effects achieved are the same or similar to those of this application, they should be covered within the scope of protection of this application.

[0115] In one embodiment, the heat exchange chamber 300 is disposed adjacent to the atomization chamber 500 , and a partial shell of the third shell 50 isolates the heat exchange chamber 300 from the atomization chamber 500 to form an isolation portion between the heat exchange chamber 300 and the atomization chamber 500 .

[0116] In this embodiment, the first shell 30 used to form the heat exchange chamber 300 and the third shell 50 used to form the atomizing chamber 500 can be separated by a shell. For example, the condensing heat exchanger 3 has a large shell, and the adjacent heat exchange chamber 300 and the atomizing chamber 500 can be formed by setting a partition in the large shell. Among them, the partition can be specifically in the form of a high temperature and corrosion resistant partition 33. When the heat exchange chamber 300 and the atomizing chamber 500 are adjacently arranged, the heat of the heat exchange chamber 300 can be transferred to the atomizing chamber 500, so that the temperature in the atomizing chamber 500 is also increased to a certain extent, which is conducive to increasing the temperature of the water mist formed in the atomizing chamber 500. When the temperature of the water mist is relatively high, it is relatively difficult to cause secondary condensation in the process of being discharged outward through the smoke outlet pipe.

[0117] In one embodiment, the condensing heat exchanger 3 may further include a second flow channel 9 , which is connected to the atomization chamber 500 , and the water mist flows out of the condensing heat exchanger 3 through the second flow channel 9 along with the flue gas flowing into the atomization chamber 500 .

[0118] In this embodiment, the condensing heat exchanger 3 may also be provided with a second flow channel 9 having an inlet and an outlet, the inlet of the second flow channel 9 being connected to the atomization chamber 500, and the second flow channel 9 being connected to the smoke outlet pipe.

[0119] Wherein, the smoke outlet pipe may be provided with an opening and closing component that opens or closes with the smoke, and the outlet is located upstream of the opening and closing component. Specifically, the opening and closing component that opens or closes with the smoke may be a windproof cap. The windproof cap can prevent backflow of wind, ensure the normal air pressure in the combustion chamber, and make the gas combustion stable. When the gas water heater is in operation, the windproof cap is in an open state, so that the smoke and the mixed fluid of the smoke and the condensed water mist can be discharged outward through the smoke outlet pipe.

[0120] In one embodiment, at least a portion of the second flow channel 9 passes through the heat exchange chamber 300 .

[0121] When the second flow channel 9 at least partially passes through the heat exchange chamber 300 in the first shell 30, the heat exchange chamber 300 of the first shell 30 can be used to insulate or even heat the mixture of flue gas and water mist in the second flow channel 9, thereby ensuring that the mixture of flue gas and water mist can maintain or reach a higher temperature when flowing through the second flow channel 9 and then flow to the smoke outlet pipe, thereby preventing the water mist in the mixture from being easily condensed during the process of being discharged outwardly through the smoke outlet pipe.

[0122] In this embodiment, the condensing heat exchanger 3 is also provided with a condensed water processing chamber 800. On the flow path of the condensed water, the condensed water processing chamber 800 is arranged between the atomization chamber 500. The condensed water in the condensed water processing chamber 800 can first flow into the condensed water processing chamber 800, and after being processed in the condensed water processing chamber 800, the processed condensed water is guided to the atomization chamber 500.

[0123] The condensed water treatment chamber 800 is provided with a neutralizer to neutralize the condensed water generated on the heat exchange component 31 .

[0124] The neutralizing agent can be used to neutralize the condensed water generated on the heat exchange component 31. The condensed water is usually acidic, and the neutralizing agent is used to adjust the pH value of the condensed water. Specifically, when an alkaline neutralizing agent is added to the acidic condensed water, an acid-base neutralization reaction occurs, so that the pH value of the condensed water is adjusted to a neutral range. After the pH value of the condensed water is adjusted to a suitable range, the condensed water can meet the environmental emission requirements when it is subsequently atomized into water mist by the atomization module 54, and at the same time, the acidic condensed water can be prevented from corroding subsequent equipment (such as the atomization module 54) and the flow channel, that is, the atomization module 54 and the flow channel downstream of the atomization module 54 can be protected. In addition, the condensed water processing chamber 800 can also be provided with a filter medium, which can be used to intercept solid particles, make the condensed water clear, and reduce the turbidity of the condensed water. When the filtered condensed water flows to the atomization chamber 500, solid particulate impurities can be prevented from being deposited on the surface of the atomization module 54, thereby affecting the atomization efficiency of the atomization module 54.

[0125] In one embodiment, the heat exchange chamber 300 , the atomization chamber 500 , and the condensate treatment chamber 800 are arranged adjacent to each other, the condensate treatment chamber 800 is located below the heat exchange chamber 300 , and the atomization chamber 500 is at least partially located below the heat exchange chamber 300 .

[0126] In this embodiment, the heat exchange chamber 300, the atomization chamber 500 and the condensed water treatment chamber 800 can be arranged adjacent to each other, so that the overall structure of the condensing heat exchanger 3 can be compact and the flow path of the fluid can be shortened. Specifically, the heat exchange chamber 300, the atomization chamber 500 and the condensed water treatment chamber 800 can partially share some cavity walls, so as to further reduce the volume and weight.

[0127] The condensate treatment chamber 800 is located below the heat exchange chamber 300, so that the condensate flowing out of the condensate treatment chamber 800 can be more conveniently and efficiently received. The atomization chamber 500 is at least partially located below the heat exchange chamber 300. The atomization chamber 500 is used to receive the condensate after being processed by the condensate treatment chamber 800. The portion of the atomization chamber 500 used to receive the condensate can be adapted to the height of the condensate treatment chamber 800, so as to shorten the condensate flow path and make the structure more compact.

[0128] In a specific embodiment, the condensing heat exchanger 3 may further include a shell, and the heat exchange chamber 300, the atomization chamber 500 and the condensed water processing chamber 800 are formed in the shell.

[0129] In this embodiment, the condensing heat exchanger 3 may include a whole shell, the interior of which may be divided into different chambers, including a heat exchange chamber 300, an atomization chamber 500, and a condensed water treatment chamber 800. This ensures that the overall structure of the shell is reliable and has better sealing performance, and the manufacturing process is relatively simple and the manufacturing cost is low.

[0130] Of course, in other embodiments, at least one of the heat exchange chamber 300 , the atomization chamber 500 and the condensed water processing chamber 800 may also be formed by an independent sub-shell, and the independent sub-shell may be spliced ​​and fixed with other shells.

[0131] Among them, the shell of the condensing heat exchanger 3 may include a first shell 30, a second shell 81, and a third shell 50, the heat exchange chamber 300 is formed in the first shell 30, the condensed water processing chamber 800 is formed in the second shell 81, and the atomization chamber 500 is formed in the third shell 50.

[0132] In this embodiment, the shell of the condensing heat exchanger 3 includes a relatively separated first shell 30, a second shell 81 and a third shell 50. The interior of the first shell 30 is used to form a heat exchange chamber 300, and the heat exchange component 31 is arranged inside the first shell 30. The flue gas inlet 301 and the flue gas outlet 302 can be arranged on the first shell 30. The interior of the second shell 81 is used to form a condensate treatment chamber 800, and the water treatment medium such as a neutralizer for condensate treatment can be located inside the second shell 81. The second shell 81 is arranged below the first shell 30, and the condensate accumulated at the bottom of the first shell 30 can flow into the second shell 81 more conveniently and efficiently under the action of gravity. Specifically, the top of the second shell 81 can be installed on the bottom of the first shell 30, and the two are arranged close to each other, which can not only make the structure more compact and require less space, but also help shorten the flow path of the condensate.

[0133] Among them, the second shell 81 is provided with a water inlet 801 and a water outlet, the condensed water output part 32 is arranged at the bottom of the first shell 30, the water inlet 801 of the second shell 81 can be arranged at the top of the second shell 81, and the condensed water output part 32 is connected to the water inlet 801.

[0134] Specifically, the condensed water output portion 32 is connected to the water inlet 801 or the condensed water output portion 32 is connected to the water inlet 801 through a first pipeline.

[0135] For example, when the condensate output portion 32 is connected to the water inlet 801, a docking structure may be formed between the water inlet 801 of the second shell 81 and the condensate output portion 32. For example, the condensate output portion 32 may be inserted into the water inlet 801 so that the condensate can be introduced into the second shell 81 without external leakage. When the condensate output portion 32 is connected to the water inlet 801 of the second shell 81, the convenience of installation can also be improved and the work intensity of the installer can be reduced.

[0136] In addition, the condensed water output part 32 can be connected to the water inlet 801 of the second shell 81 through a first pipe. One end of the first pipe is connected to the condensed water output part 32, and the other end is connected to the water inlet 801 of the second shell 81, so as to guide the condensed water flowing out of the condensed water output part 32 to the water inlet 801 of the second shell 81.

[0137] Furthermore, in order to ensure the sealing performance between the water inlet 801 and the condensed water output portion 32 , a sealing structure may be provided between the water inlet 801 and the condensed water output portion 32 .

[0138] Of course, the coordination between the condensate output part 32 and the water inlet 801 can be other ways and is not limited to the above description. Technical personnel in the relevant field may make other changes inspired by the technical essence of this application, but as long as the functions and effects achieved are the same or similar to those of this application, they should be covered within the scope of protection of this application.

[0139] The interior of the third housing 50 is used to form an atomization chamber 500, and the atomization module 54 can be disposed in the third housing 50. Specifically, the atomization module 54 can be disposed at the bottom of the third housing 50, so that the condensed water in the third housing 50 can be fully atomized.

[0140] The third housing 50 is provided with a condensed water inlet 501, and the water outlet 802 of the second housing 81 is connected to the condensed water inlet 501. The third housing 50 is at least partially arranged below the first housing 30, and the atomization chamber 500 formed in the third housing 50 is used to receive the condensed water after being treated by the water treatment medium in the second housing 81, and the portion used to receive the condensed water can be adapted to the height of the second housing 81, so as to shorten the flow path of the condensed water and make the structure more compact.

[0141] The water outlet 802 is connected to the condensed water inlet 501 or the water outlet 802 is connected to the condensed water inlet 501 through a second pipeline.

[0142] For example, when the water outlet 802 of the second shell 81 is connected to the condensed water inlet 501, a docking structure may be formed between the water outlet 802 of the second shell 81 and the condensed water inlet 501. For example, the water outlet 802 of the second shell 81 may be inserted into the condensed water inlet 501, so that the condensed water can be efficiently introduced into the third shell 50. When the condensed water inlet 501 is connected to the water outlet 802 of the second shell 81, the convenience of installation can also be improved, and the work intensity of the installer can be reduced.

[0143] In addition, the condensate inlet 501 can be connected to the water outlet 802 of the second shell 81 through a second pipe. One end of the second pipe is connected to the water outlet 802, and the other end is connected to the condensate inlet 501, so as to guide the condensate flowing out of the water outlet 802 to the condensate inlet 501 of the third shell 50.

[0144] Furthermore, in order to ensure the sealing performance between the water outlet 802 and the condensed water inlet 501 , a sealing structure may be provided between the water outlet 802 and the condensed water inlet 501 .

[0145] Of course, the coordination between the water outlet 802 of the second shell 81 and the condensed water inlet 501 can also be other ways, and is not limited to the above description. Technical personnel in the relevant field may make other changes inspired by the technical essence of this application, but as long as the functions and effects achieved are the same or similar to those of this application, they should be covered within the scope of protection of this application.

[0146] In one embodiment, the heat exchange chamber 300 is disposed adjacent to the atomization chamber 500 , and a partial shell of the third shell 50 isolates the heat exchange chamber 300 from the atomization chamber 500 to form an isolation portion between the heat exchange chamber 300 and the atomization chamber 500 .

[0147] In this embodiment, the first shell 30 used to form the heat exchange chamber 300 and the third shell 50 used to form the atomizing chamber 500 can be separated by a shell. For example, the condensing heat exchanger 3 has a large shell, and the adjacent heat exchange chamber 300 and the atomizing chamber 500 can be formed by setting a partition in the large shell. Among them, the partition can be specifically in the form of a high temperature and corrosion resistant partition 33. When the heat exchange chamber 300 and the atomizing chamber 500 are adjacently arranged, the heat of the heat exchange chamber 300 can be transferred to the atomizing chamber 500, so that the temperature in the atomizing chamber 500 is also increased to a certain extent, which is conducive to increasing the temperature of the water mist formed in the atomizing chamber 500. When the temperature of the water mist is relatively high, it is relatively difficult to cause secondary condensation in the process of being discharged outward through the smoke outlet pipe.

[0148] In one embodiment, the condensing heat exchanger 3 may further include a second flow channel 9 , which is connected to the atomization chamber 500 , and the water mist flows out of the condensing heat exchanger 3 through the second flow channel 9 along with the flue gas flowing into the atomization chamber 500 .

[0149] In this embodiment, the condensing heat exchanger 3 may also be provided with a second flow channel 9 having an inlet and an outlet, the inlet of the second flow channel 9 being connected to the atomization chamber 500, and the second flow channel 9 being connected to the smoke outlet pipe.

[0150] Wherein, the smoke outlet pipe may be provided with an opening and closing component that opens or closes with the smoke, and the outlet is located upstream of the opening and closing component. Specifically, the opening and closing component that opens or closes with the smoke may be a windproof cap. The windproof cap can prevent backflow of wind, ensure the normal air pressure in the combustion chamber, and make the gas combustion stable. When the gas water heater is in operation, the windproof cap is in an open state, so that the smoke and the mixed fluid of the smoke and the condensed water mist can be discharged outward through the smoke outlet pipe.

[0151] In one embodiment, at least a portion of the second flow channel 9 passes through the heat exchange chamber 300 .

[0152] When the second flow channel 9 at least partially passes through the heat exchange chamber 300 in the first shell 30, the heat exchange chamber 300 of the first shell 30 can be used to insulate or even heat the mixture of flue gas and water mist in the second flow channel 9, thereby ensuring that the mixture of flue gas and water mist can maintain or reach a higher temperature when flowing through the second flow channel 9 and then flow to the smoke outlet pipe, thereby preventing the water mist in the mixture from being easily condensed during the process of being discharged outwardly through the smoke outlet pipe.

[0153] In this embodiment, part of the medium-temperature flue gas with higher wind pressure in the channel downstream of the fan impeller can be guided into the atomization chamber 500 through a fourth pipeline with a smaller flow section, that is, flue gas with higher temperature and higher pressure (flow rate) can be introduced into the atomization chamber 500, so that the water mist generated in the atomization chamber 500 can be guided to the smoke outlet pipe at a higher temperature, and secondary condensation is not easy to occur, and the water mist can be discharged at a higher flow rate.

[0154] In another embodiment, for the above-mentioned atomizing chamber 500 having a smoke inlet 502 for connecting to the smoke inlet 301, and the smoke inlet 502 for forming at least part of the first flow channel 6, the ratio of the flow cross-sectional area of ​​the smoke inlet 502 to the flow cross-sectional area of ​​the smoke inlet 301 is between 5% and 15%. The specific reason for setting the ratio of the flow cross-sectional area of ​​the smoke inlet 502 to the flow cross-sectional area of ​​the smoke inlet 301 can refer to the specific description of the embodiment in which the first flow channel 6 is formed in the fourth pipeline connected to the atomizing chamber 500, and this application will not repeat it here.

[0155] Please refer to Figure 6 In this embodiment, a gas water heater is also provided, and the gas water heater includes the condensing heat exchanger 3. The gas water heater can achieve the technical effect achieved by the condensing heat exchanger 3 by setting the condensing heat exchanger 3. For details, please refer to the specific description of the above embodiment, and this application will not repeat it here. In addition to the condensing heat exchanger 3, the gas water heater also includes a main heat exchanger 2, and the flue gas after heat exchange with the main heat exchanger 2 flows into the flue gas inlet 301.

[0156] Furthermore, the gas water heater may also include a fan 4, which is arranged between the main heat exchanger 2 and the condensing heat exchanger 3 along the flue gas flow direction; the fan 4 drives the flue gas to flow into the heat exchange chamber 300 from the flue gas inlet 301 and out of the heat exchange chamber 300 from the flue gas outlet 302, and the fan 4 simultaneously drives part of the flue gas to flow into the atomization chamber 500 through the first flow channel 6, so that the water mist in the atomization chamber 500 flows out of the condensing heat exchanger 3 along with the flue gas flowing into the atomization chamber 500.

[0157] The gas water heater has a shell, and the main heat exchanger 2, condensing heat exchanger 3, fan 4, etc. can be arranged in the shell. A mounting hole is arranged on one side of the top of the shell to match the smoke outlet 302. Specifically, the mounting hole can be arranged on one side of the top wall of the shell, and the condensing heat exchanger 3 is arranged correspondingly close to the upper left side or the upper right side of the shell. The fan 4 can be at the top of the shell together with the condensing heat exchanger 3. For example, Figure 6 As shown, the fan 4 is arranged on the upper left side, and the condensing heat exchanger 3 is arranged on the upper right side. The smoke inlet 301 of the condensing heat exchanger 3 can be connected to the air outlet of the fan 4. The medium-temperature smoke flowing out of the air outlet of the fan 4 after a heat exchange with the main heat exchanger 2 can directly flow into the smoke inlet 301 of the condensing heat exchanger 3. Among them, the atomization chamber 500 and the condensed water treatment chamber 800 can be arranged as a whole close to one side of the shell, for example, close to Figure 6 The right side is set as shown, so as to facilitate the subsequent maintenance or replacement of the components in the atomization chamber 500 and the condensed water treatment chamber 800. In particular, when consumables such as neutralizers are set in the condensed water treatment chamber 800, the condensed water treatment chamber 800 can be set in a manner that is easy to disassemble.

[0158] It should be noted that, in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0159] The above-mentioned various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0160] The above are only a few embodiments of the present invention. Although the embodiments disclosed by the present invention are as above, the contents are only embodiments adopted for facilitating the understanding of the present invention and are not used to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modification and change in the form and details of the embodiments without departing from the spirit and scope disclosed by the present invention, but the patent protection scope of the present invention shall still be subject to the scope defined by the attached claims.

Claims

1. A gas water heater, characterized in that: The gas water heater comprises a condensing heat exchanger, and the condensing heat exchanger comprises: A heat exchange chamber, wherein the heat exchange chamber is provided with a smoke inlet and a smoke outlet; a heat exchange component is provided in the heat exchange chamber, and water flowing into the heat exchange component can perform heat exchange with the smoke flowing into the heat exchange chamber; condensed water generated on the heat exchange component flows to the bottom of the heat exchange chamber; an atomizing chamber, wherein the heat exchange chamber is in communication with the atomizing chamber, a condensed water output portion is provided at the bottom of the heat exchange chamber, and condensed water flowing out of the condensed water output portion flows into the atomizing chamber; a first flow channel, the first flow channel being connected to the atomizing chamber, and the first flow channel being used to introduce the smoke that has not exchanged heat with the heat exchange component upstream of the smoke inlet into the atomizing chamber; at least a portion of the first flow channel is disposed in the heat exchange chamber; the first flow channel has a smoke inlet end close to the smoke inlet, and an outlet of the first flow channel is connected to the atomizing chamber; an atomization module, the atomization module being used to atomize the condensed water flowing into the atomization chamber so as to form water mist from the condensed water; the water mist flows out of the condensing heat exchanger along with the flue gas flowing into the atomization chamber; The condensing heat exchanger is also provided with a second flow channel, at least a portion of which passes through the heat exchange chamber, and the second flow channel passing through the heat exchange chamber completely isolates the mixture of flue gas and water mist from the heat exchange components in the heat exchange chamber; the atomization chamber is provided with an exhaust port, one end of the second flow channel is connected to the exhaust port, and the other end of the second flow channel extends to the vicinity of the flue gas outlet; The gas water heater further comprises a main heat exchanger, and the flue gas after heat exchange with the main heat exchanger flows into the flue gas inlet; The gas water heater also includes a fan, which is arranged between the main heat exchanger and the condensing heat exchanger along the flue gas flow direction. The flue gas inlet is used to be connected to the outlet of the fan. The fan drives the flue gas to flow into the heat exchange chamber from the flue gas inlet and out of the heat exchange chamber from the flue gas outlet. The fan simultaneously drives part of the flue gas to flow into the atomization chamber through the first flow channel, so that the water mist in the atomization chamber flows out of the condensing heat exchanger through the second flow channel along with the flue gas flowing into the atomization chamber.

2. The gas water heater according to claim 1, characterized in that: It also includes a condensed water processing chamber, which is connected to the condensed water output part and the atomization chamber respectively. The condensed water flowing out of the condensed water output part flows into the atomization chamber after passing through the condensed water processing chamber.

3. The gas water heater according to claim 2, characterized in that: The heat exchange chamber, the atomization chamber, and the condensed water processing chamber are arranged adjacent to each other. The condensed water processing chamber is located below the heat exchange chamber, and the atomization chamber is at least partially located below the heat exchange chamber.

4. The gas water heater according to claim 2, characterized in that: It also includes a shell, in which the heat exchange chamber, the atomization chamber and the condensed water processing chamber are formed.

5. The gas water heater according to claim 4, characterized in that: The shell includes a first shell, a second shell, and a third shell. The heat exchange chamber is formed in the first shell, the condensed water processing chamber is formed in the second shell, and the atomization chamber is formed in the third shell.

6. The gas water heater according to claim 5, characterized in that: The second shell is arranged below the first shell, and is provided with a water inlet and a water outlet. The condensed water output portion is arranged at the bottom of the first shell, and the condensed water output portion is communicated with the water inlet.

7. The gas water heater according to claim 6, characterized in that: The third shell is at least partially disposed below the first shell. The third shell is provided with a condensed water inlet, and the water outlet is communicated with the condensed water inlet.

8. The gas water heater according to claim 7, characterized in that: The condensed water output portion is connected to the water inlet or the condensed water output portion is connected to the water inlet through a first pipeline; the water outlet is connected to the condensed water inlet or the water outlet is connected to the condensed water inlet through a second pipeline.

9. The gas water heater according to claim 5, characterized in that: The heat exchange chamber is disposed adjacent to the atomization chamber, and a portion of the third shell isolates the heat exchange chamber from the atomization chamber to form an isolation portion between the heat exchange chamber and the atomization chamber.

10. The gas water heater according to claim 1, characterized in that: The second flow channel is communicated with the atomization chamber, and the water mist flows out of the condensing heat exchanger through the second flow channel along with the smoke flowing into the atomization chamber.

11. The gas water heater according to claim 10, characterized in that: The second flow channel is located above the atomization chamber.

12. The gas water heater according to claim 10, characterized in that: The second flow channel is arranged in the third pipeline or the second flow channel is an independent flow channel isolated from the heat exchange chamber and formed between a partition plate in the heat exchange chamber and a shell wall of the condensing heat exchanger.

13. The gas water heater according to claim 10, characterized in that: The smoke outlet is provided with a smoke outlet pipe, and the second flow channel is communicated with the smoke outlet pipe.

14. The gas water heater according to claim 1, characterized in that: The proportion of the cross-sectional area of ​​the smoke outlet occupied by the second flow channel ranges from 6% to 16%.

15. The gas water heater according to claim 1, characterized in that: The atomizing chamber is close to the smoke inlet, and has a smoke inlet for communicating with the smoke inlet. The smoke inlet is used to form at least a portion of the first flow channel.

16. The gas water heater according to claim 15, characterized in that: The ratio of the flow cross-sectional area of ​​the smoke inlet to the flow cross-sectional area of ​​the smoke inlet is between 5% and 15%.

17. The gas water heater according to claim 1, characterized in that: The heat exchange component is a heat exchange tube, the first flow channel is formed in a fourth pipeline connected to the atomization chamber, and the fourth pipeline extends from the vicinity of the smoke inlet to the atomization chamber.

18. The gas water heater according to claim 17, characterized in that: The fourth pipeline has a smoke inlet end close to the smoke inlet, and a ratio of a flow cross-sectional area of ​​the smoke inlet end to a flow cross-sectional area of ​​the smoke inlet is between 5% and 15%.

19. The gas water heater according to claim 2, characterized in that: A neutralizer is disposed in the condensed water treatment chamber to neutralize the condensed water generated on the heat exchange component.

20. The gas water heater according to claim 1, characterized in that: The atomization module includes at least one ultrasonic atomizer, and the ultrasonic atomizer is arranged at the bottom of the atomization chamber.

21. The gas water heater according to claim 1, characterized in that: The atomization chamber is provided with a water level detection device, and the start and stop of the atomization module are controlled according to the signal of the water level detection device.

22. The gas water heater according to claim 1, characterized in that: The atomizing chamber is provided with a water level detection device, and the condensed water inlet of the atomizing chamber is lower than the detection water level of the water level detection device.

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