Gas water heating device

Abstract

The utility model discloses a gas water heating device, which comprises a frame body, a gas water heater, a gas water heater and a gas water heater, and is characterized in that the frame body is provided with a first end and a second end; the heat exchanger and the combustor are at least partially arranged in the frame body, and the combustor is used for providing heat energy for the heat exchanger so as to heat water flowing through the heat exchanger; a combustion chamber is arranged between the combustor and the heat exchanger, and the combustion chamber is arranged in the frame body; the combustor is arranged on the upstream of the heat exchanger in the flue gas flowing direction; a first partition plate is arranged in the frame body, and at least part of the first partition plate is arranged between the heat exchanger and at least part of the frame body. The anti-corrosion performance and the heat insulation performance of the frame body can be effectively improved through the first partition plate; in addition, the first partition plate is matched with other components, so that the heat exchange efficiency and the like can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas appliances, in particular to a gas water heater. Background Art

[0002] A gas water heater is a gas appliance that usually uses gas as fuel and transfers energy to cold water flowing through a heat exchanger through combustion heating to achieve the purpose of preparing hot water. Its specific forms include wall-mounted boilers, gas water heaters, etc.

[0003] A general gas water heater mainly includes: a housing, a burner that burns fuel gas to generate high-temperature heat energy, a heat exchanger for circulating the water to be heated, and a fan and other components. Among them, since the burner generates high-temperature heat energy when burning, a high-temperature zone is formed in the space above the burner. In order to prevent the high-temperature heat energy from being transferred to the electronic components and housing around the high-temperature zone, a heat insulation structure is usually set in the high-temperature zone around the burner.

[0004] However, the inventor of the present application has found that during the heat exchange between the high-temperature flue gas generated by combustion and the heat exchanger, condensed water will be generated on the surface of the heat exchanger. When the condensed water generated on the surface of the heat exchanger accumulates to a certain extent, it will gather into droplets and flow under the action of gravity, which may come into contact with the insulation structure and other components, thereby causing certain corrosion to the insulation structure and other components.

[0005] The current gas water heaters need to be further optimized and improved in terms of corrosion resistance.

[0006] Therefore, it is necessary to provide a gas water heater to solve at least one of the above problems. Utility Model Content

[0007] In addition to the above-mentioned anti-corrosion performance that needs to be optimized and improved, the existing gas water heaters also have much room for improvement in other aspects, such as heat exchange efficiency and thermal insulation performance.

[0008] In view of the defects of the prior art, the utility model provides a gas water heater in the embodiment, which can effectively improve the anti-corrosion performance and heat insulation performance of the frame by using the first partition. In addition, the first partition can cooperate with other components to further improve the heat exchange efficiency.

[0009] The specific technical solution of the implementation mode of the utility model is:

[0010] A gas water heater, comprising:

[0011] a frame having a first end and a second end;

[0012] a heat exchanger and a burner at least partially disposed in the frame, the burner being used to provide heat energy to the heat exchanger for heating water flowing through the heat exchanger;

[0013] A combustion chamber is provided between the burner and the heat exchanger, and the combustion chamber is arranged in the frame;

[0014] In the direction of flue gas flow, the burner is arranged upstream of the heat exchanger;

[0015] A first partition is disposed in the frame, and at least a portion of the first partition is disposed between the heat exchanger and at least a portion of the frame.

[0016] In a preferred embodiment, the burner is close to the second end of the frame, the heat exchanger is close to the first end of the frame, and the first partition is close to the first end of the frame.

[0017] In a preferred embodiment, there is a predetermined distance between at least a portion of the first partition plate and the frame body, forming a first gap.

[0018] In a preferred embodiment, a cavity is formed between the first partition plate and the frame.

[0019] In a preferred embodiment, the first partition is provided with a protrusion in a direction away from the frame, and the cavity is formed between the protrusion and the frame.

[0020] In a preferred embodiment, a sealing structure is arranged around the cavity.

[0021] In a preferred embodiment, the blocking structure is formed by contact between at least a portion of the first partition plate surrounding the cavity and an inner wall of the frame.

[0022] In a preferred embodiment, the blocking structure is formed by the contact between a portion of the first partition plate surrounding the cavity and an inner wall of the frame.

[0023] In a preferred embodiment, the frame is provided with an outer protrusion in a direction away from the first partition plate, and the cavity is formed between the outer protrusion and the first partition plate.

[0024] In a preferred embodiment, the cavity at least partially overlaps with a projection of the heat exchanger on the first partition plate.

[0025] In a preferred embodiment, a blocking structure is provided between the first partition plate and the heat exchanger, and the blocking structure is used to prevent the flue gas from flowing between the first partition plate and the heat exchanger.

[0026] In a preferred embodiment, the blocking structure is made of a flexible material.

[0027] In a preferred embodiment, the barrier structure is made of ceramic fibers.

[0028] In a preferred embodiment, the heat exchanger includes fins and heat exchange tubes passing through the fins, the fins are located in the frame, and the blocking structure is disposed between the fins and the first partition.

[0029] In a preferred embodiment, the fin is provided with a flange at the end close to the frame, the flange is arranged parallel to the frame, and the blocking structure is arranged between the flange and the first partition.

[0030] In a preferred embodiment, the corrosion resistance of the first partition is greater than or equal to the corrosion resistance of the frame.

[0031] In a preferred embodiment, the first partition is made of stainless steel, and the frame is made of galvanized sheet, zinc-infiltrated sheet, or aluminized sheet.

[0032] In a preferred embodiment, the gas water heater further includes a second partition, wherein the second partition is disposed between the heat exchanger and the first partition, and the blocking structure is disposed between the first partition and the second partition.

[0033] In a preferred embodiment, the second partition plate can abut against the blocking structure.

[0034] In a preferred embodiment, a first surface of the second baffle plate facing the blocking structure abuts against the blocking structure, and a second surface of the second baffle plate facing the heat exchanger is connected to the heat exchanger.

[0035] In a preferred embodiment, along the height direction, the upper end of the second partition is higher than or close to the upper end of the fin, and the lower end of the second partition is lower than or close to the lower end of the fin.

[0036] In a preferred embodiment, the gas water heater further comprises a second partition, which is disposed between the heat exchanger and the first partition and connected to the heat exchanger.

[0037] In a preferred embodiment, a third partition is further provided inside the frame. In the direction of smoke flow, the third partition is arranged upstream of the first partition. There is a predetermined distance between at least part of the third partition and the frame to form a second gap.

[0038] In a preferred embodiment, the third partition plate is at least partially disposed between the burner and the heat exchanger.

[0039] In a preferred embodiment, a first opening is provided on the frame, a second opening is provided on the third partition plate or a second opening is formed between the third partition plate and the frame, and air entering from the first opening can flow through the second gap and then flow out from the second opening.

[0040] In a preferred embodiment, the first opening is provided on a portion of the frame body close to the burner, and the second opening is higher than the first opening.

[0041] In a preferred embodiment, the gas flowing out from the second opening flows toward the heat exchanger and / or the combustion chamber in a direction forming a predetermined angle with the inner surface of the frame.

[0042] In a preferred embodiment, the first partition plate and the third partition plate are integrally formed, and a junction between the first partition plate and the third partition plate abuts against the frame.

[0043] In a preferred embodiment, the frame includes a first side plate and a second side plate that are oppositely arranged, and a third side plate and a fourth side plate connected between the first side plate and the second side plate, and the heat exchanger is arranged between the first side plate and the second side plate.

[0044] In a preferred embodiment, the first partition plate is disposed between the heat exchanger and the first side plate and / or between the second side plate.

[0045] In a preferred embodiment, the gas water heater further comprises a heat insulating member, and the heat insulating member is arranged on the third side plate and / or the fourth side plate below the heat exchanger.

[0046] In a preferred embodiment, the third side plate and the fourth side plate are lower in height than the first side plate and the second side plate, and the portions of the third side plate and the fourth side plate lower than the first side plate and the second side plate form the mounting portion of the heat exchanger.

[0047] In a preferred embodiment, the heat exchanger includes a first end plate, a second end plate and a heat exchange tube passing through the first end plate and the second end plate, and the mounting portion includes a first mounting port and a second mounting port, the first mounting port is adapted to the first end plate, and the second mounting port is adapted to the second end plate.

[0048] In a preferred embodiment, the first end plate is installed in the first installation opening by means of a sealing fit, and the second end plate is installed in the second installation opening by means of a sealing fit.

[0049] In a preferred embodiment, the sealing cooperation method includes: the first end plate directly abuts against the first mounting port of the frame, and / or a seal is provided between the first end plate and the first mounting port; the second end plate directly abuts against the second mounting port of the frame, and / or a seal is provided between the second end plate and the second mounting port.

[0050] In a preferred embodiment, the first side panel is detachably connected to the third side panel and the fourth side panel.

[0051] In a preferred embodiment, after the first side plate is separated from the third side plate and the fourth side plate, the heat exchanger can be moved out of the frame as a whole in a direction away from the second side plate.

[0052] In a preferred embodiment, the first mounting opening is a mounting groove provided on the third side panel and opening toward the second side panel, and the second mounting opening is a mounting groove provided on the fourth side panel and opening toward the second side panel.

[0053] In a preferred embodiment, the first installation opening is an opening formed on the third side plate, and the second installation opening is an opening formed on the fourth side plate.

[0054] In a preferred embodiment, the heat exchanger also includes a water collecting assembly, which includes: a first water collecting assembly arranged outside the first end plate, and the first water collecting assembly is located outside the third side plate; a second water collecting assembly arranged outside the second end plate, and the second water collecting assembly is located outside the fourth side plate.

[0055] In a preferred embodiment, the heat exchanger further comprises a water inlet pipe and a water outlet pipe connected to the water collecting assembly, and at least one of the water inlet pipe and the water outlet pipe is connected to the water collecting assembly in a detachable manner.

[0056] In a preferred embodiment, the gas water heater further comprises a fan, and the burner, the heat exchanger and the fan are arranged in sequence from bottom to top.

[0057] In a preferred embodiment, a connecting hole is further provided on the second partition, and the gas water heater further comprises a connecting piece, and the connecting piece passes through the connecting hole and fixes the second partition to the second partition and the frame at the same time.

[0058] The technical solution of the utility model has the following significant beneficial effects:

[0059] The gas water heater provided in the embodiment of the present application mainly includes: a frame, a burner and a heat exchanger at least partially arranged in the frame, wherein a first partition is arranged in the frame, and at least part of the first partition is arranged between the heat exchanger and at least part of the frame, so as to isolate the heat exchanger from the frame, and prevent the condensed water generated by the heat exchanger from contacting the frame and corroding the frame. In addition, in the height direction, in the space enclosed by the frame at a predetermined height extending upward from the bottom surface of the heat exchanger, since the flue gas has not yet exchanged heat with the water in the heat exchanger, the flue gas temperature in the space enclosed by this part of the frame is relatively high. After the first partition is arranged, the frame can be isolated from the high-temperature flue gas, thereby effectively preventing the frame from overheating.

[0060] 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

[0061] The 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 components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0062] Figure 1 This is a schematic diagram of the structure inside the shell of a gas water heater provided in an embodiment of the present application;

[0063] Figure 2 This is a front view of a gas water heater provided in an embodiment of the present application;

[0064] Figure 3 A top view of a gas water heater provided in an embodiment of the present application;

[0065] Figure 4 It is a left view of a gas water heater provided in an embodiment of the present application;

[0066] Figure 5 for Figure 4 A cross-sectional view AA of a gas water heater provided in an embodiment of the present application;

[0067] Figure 6 It is a rear view of a gas water heater provided in an embodiment of the present application;

[0068] Figure 7 for Figure 6 A BB cross-sectional view of a gas water heater provided in an embodiment of the present application;

[0069] Figure 8 for Figure 7 A partial enlarged view of a gas water heater I provided in an embodiment of the present application;

[0070] Fig. 9 for Figure 7 Another partially enlarged schematic diagram of a gas water heater I provided in an embodiment of the present application;

[0071] Fig.10 A schematic diagram of the structure of a heat exchanger provided in an embodiment of the present application;

[0072] Fig.11 This is a schematic diagram of the structure inside the shell of a gas water heater provided in an embodiment of the present application.

[0073] Reference numerals of the present application:

[0074] 1. Frame;

[0075] 10. first opening; 11. first end; 12. second end; 13. protruding portion; 14. mounting portion;

[0076] 101, first side panel; 102, second side panel; 103, third side panel; 104, fourth side panel;

[0077] 2. Burner;

[0078] 20. Fire row;

[0079] 3. Heat exchanger;

[0080] 30, fin; 301, flange; 300, heat exchange tube;

[0081] 31. first end plate;

[0082] 32. second end plate;

[0083] 33. The first water collection component;

[0084] 34. Second water collection assembly;

[0085] 4. The first partition;

[0086] 41. Raised part;

[0087] 40. First gap;

[0088] 5. Second partition;

[0089] 51. Connection hole;

[0090] 6. The third partition;

[0091] 60. Second gap;

[0092] 62. second opening;

[0093] 7. Thermal insulation parts;

[0094] 8. Blocking structure;

[0095] 9. Fan. DETAILED DESCRIPTION

[0096] 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 fall within the scope defined by the claims attached to this application.

[0097] 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.

[0098] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally 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 related listed items.

[0099] The utility model provides a gas water heater, which can effectively improve the anti-corrosion performance and heat insulation performance of the frame by using the first partition plate. In addition, the first partition plate can cooperate with other components to further improve the heat exchange efficiency.

[0100] Please refer to Figures 1 to 11In the embodiment of the specification of the present application, a gas water heater is provided, which may include: a frame 1, the frame 1 having a first end 11 and a second end 12; a heat exchanger 3 and a burner 2 at least partially arranged in the frame 1, the burner 2 is used to provide heat energy to the heat exchanger 3 for heating water flowing through the heat exchanger 3; a combustion chamber is provided between the burner 2 and the heat exchanger 3, and the combustion chamber is arranged in the frame 1; in the direction of flue gas flow, the burner 2 is arranged upstream of the heat exchanger 3; a first partition 4 is arranged in the frame 1, and at least a portion of the first partition 4 is arranged between the heat exchanger 3 and at least a portion of the frame 1.

[0101] In the embodiment of the present application, the gas water heater mainly includes: a frame 1, a heat exchanger 3, a burner 2, a first partition plate 4 and other components. In addition, the gas water heater may also include a fan 9 and a housing for housing the above components.

[0102] The air supply methods of gas water heaters can include blast type, exhaust type, etc. For gas water heaters that use exhaust type air supply, negative pressure is formed inside the entire shell, that is, the internal pressure of the gas water heater is lower than the external pressure, so it will not cause flames to overflow, and it is reliable and safe to use. Fig.11 As shown, specifically, when the gas water heater adopts the upper exhaust air supply method, the burner 2, the heat exchanger 3, and the fan 9 are arranged in sequence from bottom to top. When the fan 9 is turned on, a negative pressure can be formed in the shell, thereby sucking the outside air into the shell. In addition, it can also be used to discharge the high-temperature flue gas generated by the combustion of gas out of the shell. In the implementation manner of the present application, the gas water heater adopts the upper exhaust air supply method as an example for illustration. Other air supply methods can be adaptively adjusted with reference to the present application, and the present application will not elaborate on them one by one.

[0103] The housing may be provided with a first opening for air intake and a second opening for smoke exhaust. When the gas water heater is started, a negative pressure is formed in the housing under the action of the fan 9, and the outside air enters the housing through the first opening to mix with the gas to provide oxygen required for combustion. The high-temperature smoke generated by the subsequent combustion of the gas is discharged to the outside through the second opening under the suction action of the fan 9.

[0104] The fan 9 is used to provide a driving force for the airflow. When the gas water heater adopts the upper exhaust mode, the burner 2, the heat exchanger 3, and the fan 9 are arranged in the shell from bottom to top. When the fan 9 is started, the first opening to the second opening of the gas water heater can form a main airflow channel. Specifically, the main airflow channel can be a gas passage formed from the first opening of the shell to the burner 2, the heat exchanger 3, the fan 9 and the second opening.

[0105] The burner 2 is used to mix and burn gas and air. After ignition, the high-temperature flue gas generated by the mixed combustion of gas and air can be used to heat the water in the heat exchanger 3. Specifically, the burner 2 can be a fire-grate burner 2, which can include a plurality of fire-grate 20 arranged side by side at intervals. In addition, the structure, form, etc. of the burner 2 can vary according to different actual use scenarios, and this application does not make specific limitations here.

[0106] Water to be heated flows through the heat exchanger 3, one end of which is connected to the water inlet pipe, and the other end is connected to the water outlet pipe. Specifically, the heat exchanger 3 can be a finned heat exchanger, a coiled heat exchanger, etc. Of course, the heat exchanger 3 can also be a heat exchanger 3 in other forms, and the shape and structure of the heat exchanger 3 are not specifically limited in this application. In the implementation mode and drawings of this application, the heat exchanger 3 is mainly illustrated as a finned heat exchanger. The forms of other heat exchangers 3 can be adaptively adjusted with reference to this application, and this application will not describe them one by one.

[0107] The frame 1 may be a hollow structure, and is used to surround at least a portion of the heat exchanger 3 and the burner 2 .

[0108] like Figure 7 As shown, specifically, the frame 1 has a first end 11 and a second end 12; the first end 11 may be an open end, and the second end 12 may also be an open end. Along the circumferential direction, the cross-sectional profile of the frame 1 may be rectangular or quasi-rectangular. Of course, the cross-sectional profile of the frame 1 may also be other regular or irregular structures, and is not limited to the above examples. For example, the cross-sectional profile of the frame 1 may also be adaptively adjusted according to the structure of the shell, etc. In the embodiments and drawings of the present application, the cross-sectional profile of the frame 1 is mainly illustrated as a rectangle.

[0109] In the height direction, the first end 11 of the frame 1 is located above the second end 12, that is, the first end 11 can be a relative upper end, and the second end 12 can be a relative lower end. The burner 2 is close to the second end 12 of the frame 1, and the heat exchanger 3 is close to the first end 11 of the frame 1. The heat exchanger 3 and the burner 2 are at least partially arranged in the frame 1, which mainly means that in the height direction, the heat exchanger 3 and the burner 2 can be at least partially enclosed by the frame 1.

[0110] In the height direction, part or all of the burner 2 is located in the frame 1. Specifically, the second end 12 of the frame 1 can be lower than the highest position of the burner 2, for example, the second end 12 of the frame 1 can be lower than the combustion surface of the burner 2, for example, the second end 12 of the frame can extend downward to completely enclose the burner 2. The first end 11 of the frame 1 can be higher than the lowest position of the heat exchanger 3, so that in the height direction, the heat exchanger 3 can be partially or completely located in the frame 1. Specifically, the heat exchanger 3 is partially located in the frame 1. In addition to the first end 11 of the frame 1 being higher than the lowest position of the heat exchanger 3 in the height direction, it can also include that in the horizontal direction, part of the heat exchanger 3 is located in the frame 1, and part can be located outside the frame 1. The main body of the frame 1 is located between the burner 2 and the heat exchanger 3, and is used to form a combustion chamber of the burner 2 and the heat exchanger 3.

[0111] like Figure 8 or Fig. 9 As shown, a first partition 4 is provided in the frame 1, and at least a portion of the first partition 4 is provided between the heat exchanger 3 and at least a portion of the frame 1, thereby isolating the heat exchanger 3 from the frame 1 to prevent condensed water generated by the heat exchanger 3 from contacting the frame 1 and corroding the frame 1.

[0112] Among them, the first partition 4 can be a plate with a certain thickness, and the plate can be made of high temperature resistant and corrosion resistant materials. The corrosion resistance of the first partition 4 is greater than or equal to the corrosion resistance of the frame 1, so that the frame 1 can be reliably isolated and anti-corrosion by using the first partition 4. Specifically, the material of the first partition 4 can be stainless steel, etc. Of course, the material of the first partition 4 can also be in other forms, and the present application does not make the sole limitation here. The frame 1 can be made of galvanized sheet, zinc-diffused sheet or aluminum-diffused sheet. Among them, the galvanized sheet refers to a steel sheet with a layer of zinc on the surface. By covering the surface of the steel sheet with a zinc layer, a protective film is formed to prevent oxygen, moisture and other corrosive substances from contacting the steel sheet, thereby extending the service life of the steel sheet. The zinc-diffused sheet is a sheet in which zinc powder is infiltrated into the surface of the steel to form a zinc-iron alloy layer. Zinc-diffusion is a new type of metal anti-corrosion technology. Compared with galvanizing, the combination of the zinc-diffused layer and the steel is more firm and the anti-corrosion performance is better. Aluminized plate is a plate formed by infiltrating aluminum powder into the surface of steel to form an aluminum-iron alloy layer. Aluminized plate is a high-temperature anti-corrosion technology that heats the steel to a certain temperature to cause the aluminum powder to react chemically with the steel surface to form a dense aluminum-iron alloy layer, thereby improving the anti-corrosion performance of the steel. Of course, the material of the frame 1 can also be other forms, and this application does not make the sole limitation here.

[0113] In addition, in the height direction, in the space enclosed by the frame 1 at a predetermined height extending upward from the bottom surface of the heat exchanger 3, the flue gas temperature in this part of the frame 1 is relatively high because the flue gas has not yet exchanged heat with the water in the heat exchanger 3. After the first partition 4 is provided, the frame 1 can be isolated from the high-temperature flue gas, thereby effectively preventing the frame 1 from overheating.

[0114] like Figure 5 As shown, taking the heat exchanger 3 as a finned heat exchanger as an example, the heat exchanger 3 includes fins 30 and heat exchange tubes 300 passing through the fins 30. The bottom surface of the heat exchanger 3 may be the lower end surface of the fins 30, and the heat exchanger 3 may have multiple rows of heat exchange tubes 300 in the height direction, wherein the distance between the heat exchange tube 300 located at the bottom and the lower end surface of the fin 30 is the above-mentioned predetermined height.

[0115] In this embodiment, in order to isolate the heat exchanger 3 from the frame 1 and achieve the purpose of corrosion prevention and over-temperature prevention, the first heat insulation board can be arranged near the first end 11 of the frame 1. Specifically, the first heat insulation board can cover the entire heat exchanger 3 in the height direction, so as to completely isolate the heat exchanger 3 from the frame 1.

[0116] In some embodiments, there is a predetermined distance between at least a portion of the first partition plate 4 and the frame body 1 , forming a first gap 40 .

[0117] In this embodiment, at least part of the first partition 4 and the frame 1 may be spaced a predetermined distance apart, so that a first gap 40 is formed between the first partition 4 and the frame 1, thereby separating the first partition 4 from the frame 1, which is beneficial to improving the over-temperature protection effect of the frame 1. The size of the first gap 40 may be determined comprehensively based on the actual over-temperature protection effect, the relative position relationship between components, the spatial size, etc., and the present application does not make any specific limitation here.

[0118] like Figure 8 As shown, specifically, the first gap 40 formed between the first partition plate 4 and the frame 1 can be an open gap, that is, gas can enter the first gap 40, flow through the first gap 40, and then flow out of the first gap 40, thereby taking away the heat in the first gap 40.

[0119] Of course, in some embodiments, the first gap 40 formed between the first partition plate 4 and the frame body 1 may also be a partially open gap or a relatively closed gap. For example, when the first gap 40 formed between the first partition plate 4 and the frame body 1 is a partially open gap, gas can enter the first gap 40; when the first gap 40 formed between the first partition plate 4 and the frame body 1 is a closed gap, a relatively closed heat-insulating cavity is formed between the first partition plate 4 and the frame body 1.

[0120] In some embodiments, a cavity is formed between the first partition plate 4 and the frame 1 .

[0121] In this embodiment, the first partition plate 4 and the frame 1 may cooperate to form a cavity for heat insulating the frame 1. Specifically, the cavity may be a relatively closed cavity, that is, the gas inside the cavity does not exchange with the external gas, or it may be a relatively open cavity, the external gas can flow into the cavity, and / or the gas in the cavity can flow out.

[0122] The cavity may be formed in various forms, such as Fig. 9 As shown, one way is: the first partition 4 is provided with a protrusion 41 in a direction away from the frame 1, and the cavity is formed between the protrusion 41 and the frame 1; another way is: the frame 1 is provided with an outer protrusion 13 in a direction away from the first partition 4, and the cavity is formed between the outer protrusion 13 and the first partition 4. Figure 8 and Fig. 9 As shown, in addition, there is another method: the first partition plate 4 is provided with a protrusion 41 along the direction away from the frame body 1, and the frame body 1 is provided with an outer protrusion 13 along the direction away from the first partition plate 4, and the cavity is formed between the protrusion 41 and the outer protrusion 13.

[0123] In this embodiment, the main body for forming the cavity can be formed by setting a protrusion 41 on the first partition 4, by setting an outer protrusion 13 on the frame 1, or by simultaneously setting a protrusion 41 on the first partition 4 and an outer protrusion 13 on the frame 1.

[0124] When a cavity is formed between the first partition plate 4 and the frame body 1, the first partition plate 4 and the frame body 1 cooperate to form the contour edge portion of the cavity, and a certain gap can be at least partially formed between the first partition plate 4 and the frame body 1, or they can be in sealed contact.

[0125] In one embodiment, a sealing structure may be provided around the cavity to form a relatively closed cavity, thereby preventing condensed water or flue gas (especially flue gas after heat exchange with the heat exchanger 3) from entering the cavity and corroding the frame 1.

[0126] In a specific embodiment, the blocking structure may be formed by the contact between a portion of the first partition plate 4 surrounding the cavity and an inner wall of the frame 1 .

[0127] The frame 1 has a relative outer wall and inner wall along the thickness direction, wherein the outer wall of the frame 1 can be opposite to the outer shell, and at least part of the inner wall of the frame 1 can cooperate with the first partition 4. When the first partition 4 contacts the inner wall of the frame 1, the two can form a blocking structure. Specifically, the first partition 4 can be formed with a bending portion facing the inner wall of the frame 1, and the bending portion can be directly fitted with the inner wall of the frame 1. It should be noted that the fitting here can be a zero-gap fit, and of course it does not rule out the existence of a certain local fitting gap.

[0128] In one embodiment, in order to ensure that the cavity can effectively insulate the first partition plate 4 , the cavity at least partially overlaps with the projection of the heat exchanger 3 on the first partition plate 4 .

[0129] Specifically, as described above, in the height direction, in the space enclosed by the frame 1 at a predetermined height extending upward from the bottom surface of the heat exchanger 3, since the flue gas has not yet exchanged heat with the water in the heat exchanger 3, the flue gas temperature in the space enclosed by this part of the frame 1 is relatively high. After the cavity is formed at least within the predetermined height range, the cavity can be used to isolate the frame 1 from the high-temperature flue gas, thereby effectively preventing the frame 1 from overheating.

[0130] In addition, for the heat exchanger 3, its condensed water flows from top to bottom under the action of gravity. The bottom surface near the heat exchanger 3 is an area where the condensed water of the heat exchanger 3 drips relatively concentratedly. When a cavity is set at least in this height area, it can effectively prevent corrosion of the frame 1.

[0131] In some embodiments, a blocking structure 8 is provided between the first partition plate 4 and the heat exchanger 3 , and the blocking structure 8 is used to prevent the smoke from flowing between the first partition plate 4 and the heat exchanger 3 .

[0132] In this embodiment, the gas water heater further comprises a blocking structure 8 for preventing the flue gas from flowing between the first baffle plate 4 and the heat exchanger 3, and the blocking structure 8 is arranged between the first baffle plate and the heat exchanger 3. When the high-temperature flue gas flows upward, it will preferentially flow along a path with small flow resistance.

[0133] Taking the finned heat exchanger as an example, the spacing between two adjacent fins 30 is arranged very closely. When the distance between the first partition plate 4 and the heat exchanger 3 is large, for example, greater than or equal to the spacing between two adjacent fins 30, the resistance of the flue gas flowing through the fins 30 is likely to be greater than the resistance between the first partition plate 4 and the heat exchanger 3. In this way, the flue gas will preferentially flow out along the passage between the first partition plate 4 and the heat exchanger 3, and cannot fully exchange heat with the heat exchanger 3, thereby reducing the heat exchange efficiency of the gas water heater.

[0134] Of course, in some other cases, even when the distance between the first partition 4 and the heat exchanger 3 is small, for example, smaller than the distance between two adjacent fins 30, some flue gas will still flow through the first partition 4 and the heat exchanger 3. The flue gas directly flowing between the first partition 4 and the heat exchanger 3 cannot fully exchange heat with the heat exchanger 3, and thus will reduce the heat exchange efficiency of the gas water heater to a certain extent.

[0135] In this embodiment, by providing a blocking structure 8 between the first partition plate 4 and the heat exchanger 3, the high-temperature flue gas can all flow through the heat exchanger 3 and fully exchange heat with the heat exchanger 3, thereby improving the heat exchange efficiency of the gas water heater.

[0136] In one embodiment, the blocking structure 8 is made of a flexible material.

[0137] In this embodiment, the blocking structure 8 can be a sealing member made of a flexible material. For example, the blocking structure 8 can be made of ceramic fiber to form a high temperature resistant sealing cotton. Of course, the specific material form of the sealing member is not limited to the above examples, and it can also be other materials with relative performance. In the embodiment of the present application, the sealing member is mainly illustrated by taking the sealing cotton as an example.

[0138] When the blocking structure 8 includes sealing cotton, the sealing cotton can be arranged between the first partition plate 4 and the heat exchanger 3 by interference fit. A mounting groove adapted to the sealing cotton can be formed on the first partition plate 4, and part of the sealing cotton is embedded in the mounting groove, while the sealing cotton outside the mounting groove can directly abut against the heat exchanger 3.

[0139] Please refer to Figure 1 , Figure 3 , Figure 5 , Figure 7 and Fig.10 In one embodiment, the heat exchanger 3 includes fins 30 and heat exchange tubes 300 passing through the fins 30 , the fins 30 are located in the frame 1 , and the blocking structure 8 is disposed between the fins 30 and the first partition plate 4 .

[0140] Please refer to Figure 3 and Figure 5 In this embodiment, the heat exchanger 3 may be a finned heat exchanger, which may include fins 30 and heat exchange tubes 300. The two ends of the heat exchanger 3 pass through the frame 1 along the X direction, and the heat exchanger 3 and the frame 1 may form a zero-gap fit through an assembly relationship, thereby blocking the flow of smoke. The fins 30 include multiple fins, and the multiple fins 30 may be arranged along the extension direction of the heat exchange tube 300 (i.e. Figure 5The fins 30 extend in the direction ( Figure 5 The fin 30 is located in the frame 1, and a certain gap is formed between the fin 30 and the frame 1. In order to block the gap between the fin 30 and the frame 1, the blocking structure 8 can be provided along the Y direction, specifically, between the fin 30 and the first partition plate 4.

[0141] Please refer to Figure 8 and Fig.10 Furthermore, the fin 30 is provided with a flange 301 at the end close to the frame 1 , the flange 301 is arranged parallel to the frame 1 , and the blocking structure 8 is arranged between the flange 301 and the first partition 4 .

[0142] The fin 30 is a fin 30 with a flange 301 at the end, and the flange 301 can be used to provide a reliable installation platform for the blocking structure 8, so that the blocking structure 8 can be stably confined between the flange 301 and the first partition 4. In addition, the flange 301 structure can fill the gap between two adjacent fins 30 facing the blocking structure 8, which can further increase the heat exchange area between the flue gas and the fin 30 and improve the heat exchange efficiency; it can also isolate the high-temperature flue gas from the blocking structure 8 to a certain extent, preventing the high-temperature flue gas from contacting the blocking structure 8 too much. In particular, the water vapor in the high-temperature flue gas contacts the blocking structure 8, thereby affecting the service life of the blocking structure 8.

[0143] Generally, the barrier structure 8 is made of a compressible porous material. If a large amount of water vapor contacts the barrier structure 8 , the barrier structure 8 may fail prematurely.

[0144] In a specific embodiment, the gas water heater further comprises a second partition plate 5, wherein the second partition plate 5 is disposed between the heat exchanger 3 and the first partition plate 4, and the blocking structure 8 is disposed between the first partition plate 4 and the second partition plate 5. Furthermore, the second partition plate 5 can abut against the blocking structure 8.

[0145] In this embodiment, by providing a second partition plate 5 abutting against the blocking structure 8 , the smoke flowing through the fins 30 can be effectively isolated from the blocking structure 8 , thereby preventing the smoke from contacting the blocking structure 8 and affecting the service life of the blocking structure 8 .

[0146] Specifically, the second partition plate 5 can be made of a plate body made of a high temperature resistant and corrosion resistant material. Specifically, the material of the second partition plate 5 can be stainless steel, etc. Of course, the material of the second partition plate 5 can also be other forms, and this application does not make the only limitation here.

[0147] The surface of the second partition plate 5 close to the first partition plate 4 can be connected to the first partition plate 4, and the first partition plate 4 and the second partition plate 5 cooperate to form an installation space for installing the blocking structure 8. Specifically, along the height direction, the second partition plate 5 can cover the height of the fin 30. The height dimension of the second partition plate 5 in the height direction can be the same as or close to the height dimension of the fin 30. The upper end of the second partition plate 5 is higher than or close to the upper end of the fin 30, and the lower end of the second partition plate 5 can be lower than or close to the lower end of the fin 30.

[0148] For the heat exchanger 3, there is a temperature difference in the height direction. Specifically, along the height direction, the temperature of the lower part of the heat exchanger 3 is higher than the temperature of the upper part. This temperature difference will cause a large stress difference between the upper and lower fins 30 of the heat exchanger 3, and this stress difference may cause the fins 30 to deform, or even to crack in the upper and lower directions. By providing the second partition plate 5, the stress difference generated in the upper and lower directions of the fins 30 can be homogenized, thereby effectively ensuring the reliability of the heat exchanger 3 when in use.

[0149] The first surface of the second partition plate 5 facing the blocking structure 8 abuts against the blocking structure 8, and the second surface of the second partition plate 5 facing the heat exchanger 3 is connected to the heat exchanger 3. Specifically, the fin 30 may be provided with a flange 301 at a position close to the second partition plate 5, and the second surface of the second partition plate 5 may be connected to the flange 301.

[0150] In addition, in a specific embodiment, a connecting hole 51 may be further provided on the second partition plate 5 , and the gas water heater further includes a connecting piece, which passes through the connecting hole 51 and fixes the second partition plate 5 to the second partition plate 5 and the frame 1 at the same time.

[0151] In this embodiment, a connecting hole 51 may be provided on the second partition plate 5 , and a connecting hole 51 is also provided on the corresponding position of the frame body 1 . The second partition plate 5 and the frame body 1 can be fixed by using the connecting piece to cooperate with the connecting hole 51 .

[0152] Furthermore, a connection hole 51 may be provided on the first partition plate 4 at a position corresponding to the connection hole 51 on the second partition plate 5 , and the first partition plate 4 , the second partition plate 5 and the frame 1 may be fixed synchronously through a connecting piece.

[0153] The specific form of the connection hole 51 on the second partition 5 is not specifically limited in this application. For example, at least two lifting ears may be formed on the upper end of the second partition 5, and the connection hole 51 on the second partition 5 may be a lifting ear hole on the lifting ear.

[0154] The specific form of the connecting member is not specifically limited in the present application. For example, the connecting member may be in the form of a bolt, or other feasible detachable connection methods.

[0155] In one embodiment, the gas water heater may further include a second partition plate 5 , which is disposed between the heat exchanger 3 and the first partition plate 4 and connected to the heat exchanger 3 .

[0156] In this embodiment, the gas water heater may further include a second partition plate 5, which may be connected to the heat exchanger 3. The heat exchanger 3 may be a finned heat exchanger, and the second partition plate 5 may be connected to the end of the fin 30 of the heat exchanger 3.

[0157] Specifically, in the extension direction of the fin 30 ( Figure 5 In the Y direction), a second partition plate 5 can be arranged between the fin 30 and the first partition plate 4, and the second partition plate 5 can have multiple functions: the second partition plate 5 can stop and guide the smoke entering between the fins 30, and it matches the two fins 30 that end along the X direction to form a relatively closed smoke flow in the circumferential direction, preventing the smoke from flowing to the first partition plate 4 side through the gap between the fins 30; for the implementation method in which a blocking structure 8 (such as sealing cotton) is arranged between the first partition plate 4 and the second partition plate 5, the second partition plate 5 can also isolate the smoke from the blocking structure 8 to prevent the high-temperature smoke from excessively contacting the blocking structure 8, thereby affecting the service life of the blocking structure 8.

[0158] In another embodiment, the first partition plate 4 and the second partition plate 5 can also cooperate to form a hollow blocking structure 8, that is, the first partition plate 4 and the second partition plate 5 cooperate to form a stop cavity between the heat exchanger 3 and the frame 1 to prevent the flue gas from directly flowing out from between the heat exchanger 3 and the frame 1, thereby ensuring that the high-temperature flue gas generated by the burner 2 is fully guided to the heat exchanger 3 for efficient heat exchange.

[0159] Please refer to Figure 6 and Figure 7 In some embodiments, a third partition plate 6 is further disposed in the frame body 1. In the direction of smoke flow, the third partition plate 6 is disposed upstream of the first partition plate 4. At least a portion of the third partition plate 6 and the frame body 1 have a predetermined distance to form a second gap 60.

[0160] In this embodiment, the gas water heater may also be provided with a third partition plate 6. In the case where the burner 2, the heat exchanger 3, and the fan 9 are arranged in sequence from top to bottom, the third partition plate 6 is at least partially arranged between the burner 2 and the heat exchanger 3, so as to isolate the high-temperature flue gas between the burner 2 and the heat exchanger 3, and prevent the temperature of the frame 1 corresponding to the combustion zone between the burner 2 and the heat exchanger 3 from being too high.

[0161] In this embodiment, the third partition plate 6 can be located at the lower part of the first partition plate 4. The third partition plate 6 can be a separate structure from the first partition plate 4. In addition, the first partition plate 4 and the third partition plate 6 are integrally formed. When the third partition plate 6 is integrally formed with the first partition plate 4, the material of the third partition plate 6 can be the same as that of the first partition plate 4, and can be a high temperature resistant and corrosion resistant material, such as stainless steel. Of course, when the third partition plate 6 is separately provided from the first partition plate 4, the material of the third partition plate 6 can also be the same as that of the first partition plate 4, or the high temperature resistance of the material of the third partition plate 6 can be better than that of the first partition plate 4. Specifically, the material of the third partition plate 6 is not limited solely in this application.

[0162] When the third partition plate 6 is integrally formed with the first partition plate 4, the entire partition plate can be made into a structure that is integrally formed from top to bottom, which is beneficial for optimizing the structure, reducing the assembly parts and assembly processes for fixing the partition plate, and reducing the manufacturing cost. In the embodiments and drawings of the present application, the third partition plate 6 and the first partition plate 4 are mainly integrally formed as an example for illustration.

[0163] At least part of the third partition plate 6 is spaced a predetermined distance from the frame body 1 , thereby forming a second gap 60 . By forming the second gap 60 , an insulating cavity can be formed between the third partition plate 6 and the frame body 1 , thereby ensuring that the third partition plate 6 can be used to better insulate the frame body 1 .

[0164] When the first partition plate 4 and the third partition plate 6 are integrally formed, the junction of the first partition plate 4 and the third partition plate 6 abuts against the frame 1. The structure formed by the junction of the first partition plate 4 and the third partition plate 6 abutting against the frame 1 can effectively stop the gas entering the second gap 60, and can also effectively position the integrated structure constructed by the first partition plate 4 and the third partition plate 6.

[0165] In one embodiment, a first opening portion 10 is provided on the frame body 1, a second opening portion 62 is provided on the third partition plate 6, or a second opening portion 62 is formed between the third partition plate 6 and the frame body 1, and the air entering from the first opening portion 10 can flow through the second gap 60 and then flow out from the second opening portion 62.

[0166] In this embodiment, a first opening 10 may be provided on the frame 1, and the first opening 10 is used to introduce external air into the second gap 60 between the frame 1 and the third partition plate 6. Specifically, the first opening 10 may be one or more openings provided within a predetermined height range of the frame 1, and the openings may be circular holes or elongated holes, etc. The shape and number of the openings are not specifically limited in this application.

[0167] A second opening 62 is provided on the third partition plate 6 or between the third partition plate 6 and the frame body 1. The second opening 62 is connected to the second gap 60. Specifically, the second opening 62 may be above the first opening 10, and a certain height difference is formed between the two. The second opening 62 may be one or more openings, and the specific form and number of the openings may not be specifically limited in this application.

[0168] When the fan 9 is running, the air entering from the first opening 10 can flow through the second gap 60 and then flow out from the second opening 62, introducing the external cold air into the second gap 60 while blowing the heat transmitted into the second gap 60 through the third partition 6 out of the second gap 60, thereby achieving a better air-cooling effect on the frame 1.

[0169] In one embodiment, the first opening 10 is disposed on a portion of the frame 1 close to the burner 2 , and the second opening 62 is higher than the first opening 10 .

[0170] For the combustion water heating device, there is a combustion chamber between the burner 2 and the heat exchanger 3. During the combustion process of the burner 2, high-temperature flue gas is continuously generated in the combustion chamber.

[0171] In this embodiment, the first opening 10 is arranged close to the burner 2, and the second opening 62 is higher than the first opening 10, so that an air cooling channel for cooling the frame 1 can be formed between the first opening 10 and the second opening 62 to ensure that the frame 1 does not overheat.

[0172] Specifically, the first opening 10 can be close to the combustion surface of the burner 2, and the second opening can be relatively close to the heat exchanger 3, so as to form a certain height difference with the first opening 10, so as to ensure that the air entering between the third partition plate 6 and the frame 1 through the first opening 10 can achieve an ideal cooling effect on the frame 1; at the same time, the air flowing from the second opening to the combustion zone and / or the heat exchanger 3 has a higher temperature. The specific value of the height difference can be different according to the distance between the burner 2 and the heat exchanger 3, etc., and the application does not limit it to a unique value.

[0173] In a specific embodiment, the gas flowing out from the second opening 62 flows toward the heat exchanger 3 and / or the combustion chamber along a direction forming a predetermined angle with the inner surface of the frame 1 .

[0174] In this embodiment, the temperature of the air flowing out from the second opening is relatively high. In order to reasonably utilize this part of the air with higher temperature and prevent this part of the air from flowing upward and affecting the temperature of the upper frame 1, the outflow direction of this part of the air can be reasonably guided through structural optimization.

[0175] Specifically, the third partition 6 may be provided with an inclined structure at a position close to the first partition 4. Specifically, the inclined structure may be an inclined bend with a certain angle formed from top to bottom away from the frame 1, and at least part of the second opening 62 may be provided at the inclined bend, so that at least part of the plane where the second opening 62 is located forms a first preset angle with the frame 1, and according to the first preset angle, the air flowing out of the second opening 62 may flow toward the heat exchanger 3, or toward the combustion chamber, or toward the heat exchanger 3 and the combustion chamber.

[0176] Alternatively, the second opening 62 itself is a punching hole with a predetermined angle, which can extend toward the heat exchanger 3 and / or the combustion chamber. When the air in the second gap 60 passes through the second opening 62, it can flow toward the heat exchanger 3 side and / or the combustion chamber in the middle.

[0177] The air flowing toward the heat exchanger 3 has multiple functions. This part of the air can flow into the combustion chamber to supplement the air required for combustion; this part of the air can flow to the heat exchanger 3, so that it can exchange heat with the heat exchanger 3 to improve the heat exchange efficiency; this part of the air can also form a natural airflow barrier for the upward-flowing flue gas, preventing the upward-flowing flue gas in the middle from flowing toward the side of the frame 1.

[0178] In one embodiment, the frame 1 includes a first side plate 101 and a second side plate 102 that are relatively arranged, and a third side plate 103 and a fourth side plate 104 connected between the first side plate 101 and the second side plate 102, and the heat exchanger 3 is arranged between the first side plate 101 and the second side plate 102.

[0179] In this embodiment, the frame body 1 can be a rectangular frame body 1 with two ends opened as a whole, which can include a first side plate 101, a third side plate 103, a second side plate 102 and a fourth side plate 104 connected in sequence. The first side plate 101 and the second side plate 102 can be opposite front side plates and rear side plates, and the third side plate 103 and the fourth side plate 104 can be opposite left side plates and right side plates.

[0180] Among the four side panels, three side panels may be integrally formed structures, and another side panel may be detachably connected to the integrally formed side panel. Of course, the specific structure of the frame 1, and the forming and combination of the side panels are not limited to the above examples.

[0181] In this embodiment, the heat exchanger 3 can be inserted between the third side plate 103 and the fourth side plate 104, and located between the first side plate 101 and the second side plate 102. That is to say, the heat exchanger 3 can directly cooperate with the third side plate 103 and the fourth side plate 104. The heat exchanger 3 can use the frame 1 as its installation and positioning structure, thereby eliminating the need to set up a separate frame and installation and positioning structure for the heat exchanger 3, which is beneficial to optimizing the structure of the gas water heater, saving costs and miniaturizing the volume.

[0182] In this embodiment, a certain installation gap is formed between the heat exchanger 3 and the first side plate 101 and the second side plate 102, and the first partition plate 4 is arranged between the heat exchanger 3 and the first side plate 101 and / or the second side plate 102. Preferably, the first partition plate 4 can be located between the heat exchanger 3 and the first side plate 101 and the second side plate 102. The first partition plate 4 can be used to isolate the heat exchanger 3 from the frame 1, thereby achieving the purpose of improving the thermal insulation performance and anti-corrosion performance.

[0183] Please refer to Figure 4 and Figure 5 Furthermore, the gas water heater also includes a heat insulating member 7 , and the heat insulating member 7 is arranged on the third side plate 103 and / or the fourth side plate 104 below the heat exchanger 3 .

[0184] In this embodiment, at least one of the third side plate 103 and the fourth side plate 104 below the heat exchanger 3 may also be provided with a heat insulating member 7, and the heat insulating member 7 may be used to insulate the third side plate 103 and the fourth side plate 104 to prevent them from overheating. Specifically, the heat insulating member 7 may be in the form of heat insulating cotton or in the form of an air cavity provided on the third side plate 103 and the fourth side plate 104. The specific form of the heat insulating member 7 is not limited in this application.

[0185] In one embodiment, the third side plate 103 and the fourth side plate 104 are lower in height than the first side plate 101 and the second side plate 102, and the portions of the third side plate 103 and the fourth side plate 104 that are lower than the first side plate 101 and the second side plate 102 form the mounting portion 14 of the heat exchanger 3.

[0186] In this embodiment, a mounting portion 14 is formed on the frame body 1 at the first end 11 or at a position close to the first end 11 , and the heat exchanger 3 is detachably disposed at the mounting portion 14 .

[0187] The heat exchanger 3 can be detachably mounted on the mounting portion 14. Specifically, the mounting portion 14 can be used to mount and position the heat exchanger 3. When the heat exchanger 3 needs to be removed from the frame 1, the heat exchanger 3 can be detached from the mounting portion 14. The detachable connection can be that the heat exchanger 3 is directly overlapped on the mounting portion 14, or is mounted on the mounting portion 14 by snapping. Of course, the detachable connection can also be other ways, which are not specifically limited in this application.

[0188] In one embodiment, the heat exchanger 3 includes a first end plate 31 and a second end plate 32 and a heat exchange tube 300 passing through the first end plate 31 and the second end plate 32, and the mounting portion 14 includes a first mounting port and a second mounting port, the first mounting port is adapted to the first end plate 31, and the second mounting port is adapted to the second end plate 32.

[0189] In this embodiment, taking the heat exchanger 3 as a finned heat exchanger as an example, the heat exchanger 3 may include a first end plate 31 and a second end plate 32 in the direction of the fins 30 arranged at intervals, and the first end plate 31 and the second end plate 32 may be understood to be a heat exchange fin with a special size to a certain extent. The heat exchange tube 300 of the heat exchanger 3 may be inserted into the fin 30 and the first end plate 31 and the second end plate 32 at both ends.

[0190] The mounting portion 14 may include a first mounting opening adapted to the first end plate 31 and a second mounting opening adapted to the second end plate 32. The first mounting opening may be in the form of an open slot with an opening formed at one end, or in the form of an opening matched to the outer contour of the first end plate 31. The second mounting opening may be in the form of an open slot with an opening formed at one end, or in the form of an opening matched to the outer contour of the second end plate 32.

[0191] The first end plate 31 is installed in the first installation port in a sealed manner, and the second end plate 32 is installed in the second installation port in a sealed manner, thereby ensuring the sealing of the heat exchanger 3 and the frame 1 at the end plate position and preventing smoke from leaking from the position where the two are matched.

[0192] Specifically, the sealing matching method may include: the first end plate 31 directly abuts against the first installation opening of the frame 1, and / or a sealing member is provided between the first end plate 31 and the first installation opening; the second end plate 32 directly abuts against the second installation opening of the frame 1, and / or a sealing member is provided between the second end plate 32 and the second installation opening. When a sealing member is provided, the sealing member may be made of a high temperature resistant and corrosion resistant material.

[0193] Of course, the specific setting method of the sealing cooperation can also be other methods 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.

[0194] In one embodiment, a predetermined height difference is formed between the top of the first side panel 101 and the second side panel 102 and the top of the third side panel 103 and the fourth side panel 104, and the first mounting port is an upward-opening mounting groove formed by the top of the third side panel 103 cooperating with the first side panel 101 and the second side panel 102; the second mounting port is an upward-opening mounting groove formed by the top of the fourth side panel 104 cooperating with the first side panel 101 and the second side panel 102.

[0195] In this embodiment, the top of the third side plate 103 and the fourth side plate 104 of the frame 1 for mounting the heat exchanger 3 can be lower than the height of the first side plate 101 and the second side plate 102, and the top of the third side plate 103 cooperates with the first side plate 101 and the second side plate 102 to form a mounting groove with an opening facing upward; similarly, the top of the fourth side plate 104 cooperates with the first side plate 101 and the second side plate 102 to form a mounting groove with an opening facing upward, and the first end plate 31 and the second end plate 32 of the heat exchanger 3 can be respectively installed in the mounting grooves.

[0196] Alternatively, the first mounting opening may be an opening formed on the third side plate 103, and the second mounting opening may be an opening formed on the fourth side plate 104. The opening may be a mounting groove with the opening facing upward. The first end plate 31 and the second end plate 32 of the heat exchanger 3 may be respectively mounted in the mounting grooves.

[0197] Alternatively, the first mounting opening may be a mounting groove provided on the third side plate 103 and opening toward the second side plate 102 , and the second mounting opening may be a mounting groove provided on the fourth side plate 104 and opening toward the second side plate 102 .

[0198] Among them, the heat exchanger 3 is at least partially located in the frame 1, and specifically, the main heat exchange part of the heat exchanger 3 (for example, the main heat exchange part provided with the fin 30) can be located between the first side plate 101 and the second side plate 102. The projection of the fin 30 of the heat exchanger 3 toward the first side plate 101 or the second side plate 102 at least overlaps with the first side plate 101 or the second side plate 102. In one embodiment, the first side plate 101 is detachably connected to the third side plate 103 and the fourth side plate 104. Specifically, the detachable connection method can be a threaded connection, for example, the edge of the first side plate 101 can be connected to the edge of the third side plate 103 and the fourth side plate 104 by screws. Of course, the detachable connection method is not limited to the above examples, and the technicians 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 scope of protection of this application.

[0199] When the first side plate 101 is separated from the third side plate 103 and the fourth side plate 104, the heat exchanger 3 can be moved out of the frame 1 as a whole in a direction away from the second side plate 102, so that when the heat exchanger 3 needs to be inspected and maintained, there is no need to disassemble the entire machine, and the heat exchanger 3 can be simply removed from the frame 1 in the above manner.

[0200] It should be noted that in other embodiments of the present application, the first side plate 101 and the second side plate 102 can be replaced with each other to form an equivalent solution.

[0201] Please refer to Figure 2 and Figure 3 In one embodiment, the heat exchanger 3 may further include a water collection assembly, which includes: a first water collection assembly 33 disposed outside the first end plate 31, and the first water collection assembly 33 is located outside the third side plate 103; a second water collection assembly 34 disposed outside the second end plate 32, and the second water collection assembly 34 is located outside the fourth side plate 104. Further, the heat exchanger 3 may further include a water inlet pipe and a water outlet pipe connected to the water collection assembly, and at least one of the water inlet pipe and the water outlet pipe is connected to the water collection assembly in a detachable manner.

[0202] The water collecting components of the heat exchanger 3 are respectively connected to the water inlet pipe and the water outlet pipe. The water entering the water inlet pipe flows into each heat exchange tube 300 through the water collecting components. After the water in the subsequent heat exchange tube 300 exchanges heat with the high-temperature flue gas, it can be gathered to the water collecting components and then flow out through the water outlet pipe.

[0203] Among them, in order to prevent the heat exchanger 3 from interfering with the water inlet pipe and the water outlet pipe during the removal process, at least one of the water inlet pipe and the water outlet pipe can be connected to the water collection component in a detachable manner. Specifically, the water outlet pipe can be connected to the water collection component of the heat exchanger 3 in a detachable manner, and the improved water pipe can remain connected to the water collection component of the heat exchanger 3, and the two can be fixedly connected, or detachably connected, or integrally formed, etc. When the heat exchanger 3 needs to be removed from the frame 1, the second side plate 102 can be removed first, and then the water outlet pipe can be removed, and then the heat exchanger 3 can be pulled out of the frame 1 in a push-pull manner. The overall operation is simple and convenient, which can effectively shorten the maintenance time and reduce the maintenance intensity.

[0204] 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.

[0205] 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.

[0206] 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 implementation without departing from the spirit and scope disclosed by the present invention, but the scope of patent protection 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 frame having a first end and a second end; a heat exchanger and a burner at least partially disposed in the frame, the burner being used to provide heat energy to the heat exchanger for heating water flowing through the heat exchanger; A combustion chamber is provided between the burner and the heat exchanger, and the combustion chamber is arranged in the frame; In the direction of flue gas flow, the burner is arranged upstream of the heat exchanger; A first partition is disposed in the frame, and at least a portion of the first partition is disposed between the heat exchanger and at least a portion of the frame.

2. The gas water heater according to claim 1, characterized in that: The burner is close to the second end of the frame, the heat exchanger is close to the first end of the frame, and the first partition is close to the first end of the frame.

3. The gas water heater according to claim 1, characterized in that: There is a predetermined distance between at least a portion of the first partition plate and the frame body, forming a first gap.

4. The gas water heater according to claim 1, characterized in that: A cavity is formed between the first partition plate and the frame.

5. The gas water heater according to claim 4, characterized in that: The first partition is provided with a protrusion in a direction away from the frame, and the cavity is formed between the protrusion and the frame.

6. The gas water heater according to claim 4, characterized in that: A blocking structure is arranged around the cavity.

7. The gas water heater according to claim 6, characterized in that: The blocking structure is formed by the contact between a portion of the first partition plate surrounding the cavity and the inner wall of the frame.

8. The gas water heater according to claim 4, characterized in that: The frame is provided with an outer protrusion in a direction away from the first partition plate, and the cavity is formed between the outer protrusion and the first partition plate.

9. The gas water heater according to claim 4, characterized in that: The cavity at least partially overlaps with a projection of the heat exchanger on the first partition plate.

10. The gas water heater according to claim 1, characterized in that: A blocking structure is provided between the first partition plate and the heat exchanger, and the blocking structure is used to prevent smoke from flowing between the first partition plate and the heat exchanger.

11. The gas water heater according to claim 10, characterized in that: The blocking structure is made of a flexible material.

12. The gas water heater according to claim 11, characterized in that: The barrier structure is made of ceramic fibers.

13. The gas water heater according to claim 10, characterized in that: The heat exchanger comprises fins and heat exchange tubes passing through the fins. The fins are located in the frame, and the blocking structure is arranged between the fins and the first partition plate.

14. The gas water heater according to claim 13, characterized in that: The end of the fin close to the frame is provided with a flange, the flange is arranged parallel to the frame, and the blocking structure is arranged between the flange and the first partition.

15. The gas water heater according to claim 1, characterized in that: The corrosion resistance of the first partition is greater than or equal to the corrosion resistance of the frame.

16. The gas water heater according to claim 15, characterized in that: The first partition is made of stainless steel, and the frame is made of galvanized sheet, zinc-infiltrated sheet or aluminized sheet.

17. The gas water heater according to claim 14, characterized in that: The gas water heater further includes a second partition plate, wherein the second partition plate is disposed between the heat exchanger and the first partition plate, and the blocking structure is disposed between the first partition plate and the second partition plate.

18. The gas water heater according to claim 17, characterized in that: The second partition can abut against the blocking structure.

19. The gas water heater according to claim 18, characterized in that: A first surface of the second baffle plate facing the blocking structure abuts against the blocking structure, and a second surface of the second baffle plate facing the heat exchanger is connected to the heat exchanger.

20. The gas water heater according to claim 19, characterized in that: In the height direction, the upper end of the second partition is higher than or close to the upper end of the fin, and the lower end of the second partition is lower than or close to the lower end of the fin.

21. The gas water heater according to claim 1, characterized in that: The gas water heater further comprises a second partition plate, which is disposed between the heat exchanger and the first partition plate and connected to the heat exchanger.

22. The gas water heater according to claim 1, characterized in that: A third partition is also arranged inside the frame. In the direction of smoke flow, the third partition is arranged upstream of the first partition. There is a predetermined distance between at least part of the third partition and the frame to form a second gap.

23. The gas water heater according to claim 22, characterized in that: The third partition plate is at least partially disposed between the burner and the heat exchanger.

24. The gas water heater according to claim 22, characterized in that: The frame is provided with a first opening, the third partition is provided with a second opening or a second opening is formed between the third partition and the frame, and air entering from the first opening can flow through the second gap and then flow out from the second opening.

25. The gas water heater according to claim 24, characterized in that: The first opening is disposed on a portion of the frame body close to the burner, and the second opening is higher than the first opening.

26. The gas water heater according to claim 24, characterized in that: The gas flowing out from the second opening flows toward the heat exchanger and / or the combustion chamber in a direction forming a predetermined angle with the inner surface of the frame.

27. The gas water heater according to claim 24, characterized in that: The first partition plate and the third partition plate are integrally formed, and the junction between the first partition plate and the third partition plate abuts against the frame.

28. The gas water heater according to claim 1, characterized in that: The frame includes a first side plate and a second side plate that are arranged opposite to each other, and a third side plate and a fourth side plate that are connected between the first side plate and the second side plate. The heat exchanger is arranged between the first side plate and the second side plate.

29. The gas water heater according to claim 28, characterized in that: The first partition plate is disposed between the heat exchanger and the first side plate and / or between the second side plate.

30. The gas water heater according to claim 28, characterized in that: The gas water heater further comprises a heat insulating member, and the heat insulating member is arranged on the third side plate and / or the fourth side plate below the heat exchanger.

31. The gas water heater according to claim 28, characterized in that: The third side plate and the fourth side plate are lower in height than the first side plate and the second side plate, and portions of the third side plate and the fourth side plate that are lower than the first side plate and the second side plate form mounting portions of the heat exchanger.

32. The gas water heater according to claim 31, characterized in that: The heat exchanger includes a first end plate, a second end plate, and a heat exchange tube passing through the first end plate and the second end plate. The mounting portion includes a first mounting opening and a second mounting opening, the first mounting opening is adapted to match the first end plate, and the second mounting opening is adapted to match the second end plate.

33. The gas water heater according to claim 32, characterized in that: The first end plate is installed in the first installation opening in a sealing manner, and the second end plate is installed in the second installation opening in a sealing manner.

34. The gas water heater according to claim 33, characterized in that: The sealing matching method includes: the first end plate directly abuts against the first mounting port of the frame, and / or a seal is provided between the first end plate and the first mounting port; the second end plate directly abuts against the second mounting port of the frame, and / or a seal is provided between the second end plate and the second mounting port.

35. The gas water heater according to claim 32, characterized in that: The first side panel is detachably connected to the third side panel and the fourth side panel.

36. The gas water heater according to claim 35, characterized in that: When the first side plate is separated from the third side plate and the fourth side plate, the heat exchanger can be moved out of the frame as a whole in a direction away from the second side plate.

37. The gas water heater according to claim 36, characterized in that: The first mounting opening is a mounting groove provided on the third side plate and opening toward the second side plate, and the second mounting opening is a mounting groove provided on the fourth side plate and opening toward the second side plate.

38. The gas water heater as claimed in claim 32, characterized in that: The first installation opening is an opening formed on the third side plate, and the second installation opening is an opening formed on the fourth side plate.

39. The gas water heater according to claim 32, characterized in that: The heat exchanger further comprises a water collecting assembly, wherein the water collecting assembly comprises: A first water collection assembly disposed outside the first end plate, the first water collection assembly being located outside the third side plate; A second water collecting assembly is arranged outside the second end plate, and the second water collecting assembly is located outside the fourth side plate.

40. The gas water heater as claimed in claim 39, characterized in that: The heat exchanger further comprises a water inlet pipe and a water outlet pipe which are in communication with the water collecting assembly, and at least one of the water inlet pipe and the water outlet pipe is connected to the water collecting assembly in a detachable manner.

41. The gas water heater according to any one of claims 1 to 40, characterized in that: The gas water heater also includes a fan, and the burner, the heat exchanger and the fan are arranged in sequence from bottom to top.

42. The gas water heater according to any one of claims 17 to 21, characterized in that: The second partition is also provided with a connection hole, and the gas water heater further comprises a connection piece, which passes through the connection hole and fixes the second partition to the second partition and the frame at the same time.

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