Cleaning device and gas water heater

Abstract

The utility model relates to a removing device and a gas water heater, the removing device is used for the gas water heater and comprises a heat preservation bin and a fan, the heat preservation bin is used for being arranged on a combustor of the gas water heater, and a heat preservation cavity is formed in the heat preservation bin. The fan is provided with an air inlet and an air outlet, the air inlet communicates with the heat preservation cavity, and the air outlet is used for communicating with a water leakage point of the gas water heater. According to the removing device, the heat preservation bin is arranged outside the combustor, waste heat generated during work of the combustor can be obtained into the heat preservation cavity, and gas in the heat preservation cavity is heated to form hot gas. The draught fan can drive hot air in the heat preservation cavity to be blown to the water inlet, and leaked water possibly existing in the position is dried through wind power of the draught fan and heat of the hot air. Therefore, the cleaning device and the gas water heater can quickly clean the leaked water at the water inlet of the gas water heater by using the working waste heat of the combustor, so that the possibility that the accumulated water accumulates to corrode a shell and influence the normal operation of a circuit is reduced.

Description

Technical Field

[0001] This application relates to the field of gas water heater technology, and in particular to a cleaning device and a gas water heater. Background Technology

[0002] The core system of a gas water heater includes a combustion system, a heat exchange system, and a water system. The water system comprises the inlet section, the heat exchange section, and the outlet section. The inlet section mainly consists of the inlet pipe, a flow stabilizer, and a water pump. During use, leaks may occur at the water pump and inlet; these potential leak points are called leak points. Over long-term use, if leaked water cannot be drained or removed promptly, it accumulates inside the water heater's casing, easily leading to corrosion and rust, thus reducing the gas water heater's durability. Furthermore, accumulated water may also affect the internal circuitry of the gas water heater, impacting its normal operation.

[0003] In related technologies, water leakage from the inlet of a gas water heater is mainly addressed by collecting and then draining the water. Specifically, this involves creating grooves inside the casing and collecting and draining the accumulated water from these grooves. However, this technology may result in the collected water not being drained completely in a timely manner, or prolonged accumulation corroding the gas water heater's casing. Utility Model Content

[0004] Therefore, it is necessary to provide a cleaning device and a gas water heater that can remove water leakage at the leak point to address the above problems.

[0005] A cleaning device for a gas water heater, comprising:

[0006] An insulation chamber, for installation on the burner of the gas water heater, and having an insulation cavity within it; and

[0007] The fan has an air inlet and an air outlet. The air inlet is connected to the insulation chamber, and the air outlet is used to connect to the leak point of the gas water heater.

[0008] In one embodiment, the heat-insulating chamber includes a chamber body and a funnel structure. The heat-insulating chamber is formed within the chamber body. The funnel structure has an inlet end and an outlet end, and the flow area of ​​the inlet end is greater than the flow area of ​​the outlet end. The inlet end is connected to and communicates with the heat-insulating chamber, and the outlet end is connected to the air inlet of the fan.

[0009] In one embodiment, the cleaning device further includes an air guide tube having an air inlet and an air outlet, the air inlet being connected to and communicating with the outlet end of the funnel structure, and the air outlet facing the leak point.

[0010] In one embodiment, the fan is located at the air outlet, and the air inlet faces the air inlet.

[0011] In one embodiment, the air outlet is a profiled opening; and / or, the chamber is rectangular, and the funnel structure is a trapezoidal funnel.

[0012] In one embodiment, the heat-insulating chamber also has an air inlet that communicates with the heat-insulating cavity.

[0013] A gas water heater includes the purification device as described above.

[0014] In one embodiment, the gas water heater includes a burner, the burner including a housing; in the height direction of the gas water heater, the heat insulation chamber is disposed on the side of the housing and defines the heat insulation cavity on the surface of the housing.

[0015] In one embodiment, the heat-insulating chamber includes a first panel, a second panel, a third panel, and a fourth panel. The first panel is rectangular and spaced apart from the shell. The second panel, the third panel, and the fourth panel are respectively connected to the three rectangular sides of the first panel and the shell.

[0016] In one embodiment, the edge of the insulated compartment has an extension;

[0017] The extension is a bent plate, and the insulation chamber is connected to the shell by a snap-fit ​​connection through the extension; and / or, the insulation chamber is connected to the shell through the extension by a threaded component.

[0018] In one embodiment, the gas water heater further includes a housing and a water inlet pipe. The housing has a water inlet and is connected to the water inlet pipe through the water inlet. The leakage point includes the water inlet.

[0019] The aforementioned cleaning device and gas water heater have an insulation chamber located outside the burner, allowing it to draw waste heat from the burner into the insulation chamber, heating the gas inside. A fan then drives this hot gas from the insulation chamber towards the water inlet, using the fan's airflow and the heat of the hot gas to dry any potential leaks. In this way, the cleaning device and gas water heater can quickly remove leaks at the water inlet using the waste heat from the burner, reducing the possibility of water accumulation corroding the casing and affecting the normal operation of the circuitry. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a partial structural diagram of a gas water heater with a purging device according to an embodiment of this application.

[0022] Figure 2 for Figure 1 The diagram shows the structure of a gas water heater from another angle.

[0023] Figure 3 This is a partial structural diagram of a gas water heater with a purging device according to another embodiment of this application.

[0024] Figure 4 for Figure 1 The diagram shows the exploded structure of a gas water heater.

[0025] Explanation of reference numerals in the attached drawings: 100, cleaning device; 10, insulation chamber; 11, insulation cavity; 13, air inlet; 15, chamber body; 151, first panel; 152, second panel; 153, third panel; 154, fourth panel; 155, through hole; 17, funnel structure; 19, extension; 30, fan; 31, impeller; 33, motor; 35, support; 50, air guide pipe; 200, gas water heater; 210, burner; 211, shell; 2111, back plate; 2112, cover plate; 220, water leakage point; 230, outer shell; 240, heat exchanger; 250, water circuit structure; 251, water inlet pipe. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0028] Furthermore, where the term "and / or" appears, it merely describes the relationship between related objects and indicates that three relationships can exist. For example, A and / or B can represent the relationship between A and B: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates an "or" relationship between the related objects before and after it. Where the terms "first" and "second" appear, these terms are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature specified with "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, four, five, etc., unless otherwise explicitly specified.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0032] Please see Figures 1 to 4 An embodiment of this application provides a cleaning device 100 for a gas water heater 200, which includes an insulation chamber 10 and a fan 30. The insulation chamber 10 is used to install the burner 210 of the gas water heater 200 and has an insulation cavity 11 inside. The fan 30 has an air inlet and an air outlet. The air inlet is connected to the insulation cavity 11, and the air outlet is used to connect to the leak point 220 of the gas water heater 200.

[0033] A gas water heater 200 includes a housing 230 and a burner 210, a heat exchanger 240, and a water circuit structure 250 disposed within the housing 230. The burner 210 forms the combustion system of the gas water heater 200, the heat exchanger 240 forms the heat exchange system of the gas water heater 200, and the water circuit structure 250 forms the water circuit system of the gas water heater 200. The burner 210 includes a housing 211 and a burner, combustion chamber, etc., located within the housing 211. The housing 211 may include a back plate 2111 and a cover plate 2112. The heat exchanger 240 is disposed above the burner 210 in the height direction of the gas water heater 200 to receive the heat generated by the burner 210 during operation. The water circuit structure 250 connects to the heat exchanger 240 and may include an inlet section and an outlet section. The inlet section may include an inlet pipe 251, a water pump, etc.

[0034] The heat preservation chamber 10 is located outside the burner 210, and can be specifically located on the shell 211 of the burner 210. The gas located in the heat preservation chamber 11 can exchange heat with the shell 211 of the burner 210, thereby absorbing the waste heat generated by the operation of the burner 210.

[0035] Understandably, leak point 220 refers to the location where water may leak or accumulate in the gas water heater 200 during use, such as the water pump or the water inlet of the outer casing 230. The air outlet connected to the leak point 220 of the gas water heater 200 can either be directly facing the leak point 220, or the air outlet can be connected to an air guide structure, with the air guide structure facing the leak point 220. As long as the air blown from the air outlet can reach the leak point 220, no specific limitation is made here.

[0036] The aforementioned cleaning device 100 and gas water heater 200, with the insulation chamber 10 located outside the burner 210, can absorb the waste heat from the burner 210's operation and transfer it to the insulation chamber 11, heating the gas within the insulation chamber 11 to form hot gas. The fan 30 then drives the hot gas from the insulation chamber 11 towards the water inlet, using the fan's airflow and the heat of the hot gas to dry any potential leaks. In this way, the cleaning device 100 and gas water heater 200 can quickly remove leaks at the water inlet of the gas water heater 200 using the waste heat from the burner 210, reducing the possibility of water accumulation corroding the outer casing 230 and affecting the normal operation of the circuit. Furthermore, the insulation chamber 10 can also cool the burner 210 through the flowing gas, preventing overheating damage to its components or a reduced lifespan.

[0037] Furthermore, the insulation chamber 10 also has an air inlet 13 that connects to the insulation cavity 11. Understandably, outside air can flow into the insulation cavity 11 through the air inlet 13.

[0038] Thus, when the fan 30 is running, the air inlet 13 can serve as a replenishment air inlet, allowing external air to be supplied into the insulation chamber 11 through the air inlet 13. Specifically, after the air enters the insulation chamber 11 through the air inlet 13 and is heated, it flows continuously towards the leak point 220.

[0039] In some embodiments, the heat-insulating chamber 10 includes a chamber body 15 and a funnel structure 17. A heat-insulating chamber 11 is formed inside the chamber body 15. The funnel structure 17 has an inlet end and an outlet end, and the flow area of ​​the inlet end is greater than the flow area of ​​the outlet end. The inlet end is connected to and communicates with the heat-insulating chamber 11, and the outlet end is connected to the air inlet of the ventilator 30.

[0040] Understandably, the funnel structure 17 is at least partially tapered from the inlet end to the outlet end. Fluid flowing toward the funnel structure 17 can enter the funnel structure 17 from the inlet end, be gathered by the funnel structure 17, and then flow out of the funnel structure 17 from the outlet end. Specifically, the funnel structure 17 is located at one end of the heat-insulating chamber 11.

[0041] In this way, the gas in the insulation chamber 11 can be concentrated and flow to the fan 30 under the convergence of the funnel structure 17, and finally flow to the leak point 220.

[0042] Furthermore, the silo body 15 is rectangular, and the funnel structure 17 is a trapezoidal funnel.

[0043] In this way, the chamber 15 can better adapt to the shell 211 of the burner 210, which is generally rectangular, and the trapezoidal funnel can be tightly connected to the bottom of the chamber 15, forming a sealed connection between the two.

[0044] In some embodiments, the cleaning device 100 further includes an air guide pipe 50, which has an air inlet end and an air outlet end. The air inlet end is connected to and communicates with the outlet end of the funnel structure 17, and the air outlet end is directed toward the leak point 220.

[0045] In this way, the air guide tube 50 can accurately guide the hot gas gathered by the funnel structure 17 to the water leakage point 220. Understandably, the length and extension path of the air guide tube 50 can be adaptively designed according to the location of the water leakage point 220. In addition, the number of air outlets can correspond to the number of water leakage points 220, and be set one-to-one with the water leakage points 220.

[0046] Furthermore, the fan 30 is located at the air outlet end, and the air inlet faces the air inlet end. Specifically, the fan 30 may be partially located inside the air outlet end.

[0047] In this way, the negative pressure generated at the air inlet of the fan 30 can better drive the airflow from the air inlet end into the air guide pipe 50, and flow along the air guide pipe 50 to the air outlet end.

[0048] Furthermore, the air outlet is a profiled opening. Understandably, the air inlet of the air duct 50 mates with the outlet of the funnel structure 17, and its diameter is approximately the same as the port of the outlet. The air outlet of the air duct 50 mates with the fan 30, and its diameter is approximately the same as the maximum diameter of the fan 30. Thus, designing the air outlet as a profiled opening allows for better matching with the fan 30.

[0049] Specifically, the chamber 15, the funnel structure 17, and the gas guide pipe 50 can all be made of metal materials to have good high temperature resistance and be able to work stably in the gas water heater 200.

[0050] In some other embodiments, the fan 30 includes an impeller 31 and a motor 33. The impeller 31 is fixed to the opening of the air duct 50. The lower end of the impeller 31 is connected to the motor 33. The end of the motor 33 is connected to the main board via a wire to obtain power. A support member 35 is provided at the bottom of the motor 33, and the bottom casing 230 of the gas water heater 200 is connected to the support member 35. Specifically, three equally spaced "L"-shaped support members 35 are provided at the bottom of the motor 33, and threaded openings are provided at the connection between the feet of the support member 35 and the bottom casing 230 of the gas water heater 200. Screws are used to fix the motor 33 and the bottom casing 230 of the gas water heater 200 through the support member 35.

[0051] This application also provides a gas water heater 200, including the aforementioned purging device 100.

[0052] Understandably, to achieve its normal function, the gas water heater 200 also includes a housing 230 and a burner 210, a heat exchanger 240, and a water circuit structure 250 disposed within the housing 230. The burner 210 forms the combustion system of the gas water heater 200, the heat exchanger 240 forms the heat exchange system of the gas water heater 200, and the water circuit structure 250 forms the water circuit system of the gas water heater 200. The burner 210 includes a housing 211 and a burner, combustion chamber, etc., located within the housing 211. The housing 211 may include a back plate 2111 and a cover plate 2112. The heat exchanger 240 is disposed above the burner 210 in the height direction of the gas water heater 200 to receive the heat generated by the burner 210 during operation. The water circuit structure 250 connects to the heat exchanger 240 and may include an inlet section and an outlet section. The inlet section may include an inlet pipe 251, a water pump, etc.

[0053] In some embodiments, the housing 230 has a water inlet and is connected to the water inlet pipe 251 through the water inlet, and the leakage point 220 includes the water inlet.

[0054] Understandably, the inlet pipe 251 is used to input cold water from the outside into the heat exchanger 240, and there may be leakage or water accumulation at its connection with the outer casing 230.

[0055] Therefore, designating the inlet as the leak point 220 can effectively reduce the probability of water accumulation at that point leading to corrosion and more serious leaks.

[0056] In some embodiments, in the height direction of the gas water heater 200, the heat preservation chamber 10 is disposed on the side of the housing 211 and defines a heat preservation cavity 11 on the surface of the housing 211.

[0057] The shell 211 may include a back plate 2111 and a cover plate 2112, and the heat-insulating chamber 10 may be disposed on the cover plate 2112. Specifically, the chamber body 15 of the heat-insulating chamber 10 is covered on the shell 211, and the heat-insulating chamber 11 is formed on the surface of the shell 211, and the gas inside can directly contact the shell 211 and exchange heat with it.

[0058] Thus, the heat preservation chamber 10 is located on the side of the shell 211, which can both obtain the waste heat of the burner 210 and not have too much impact on the burner 210 supplying heat to the heat exchanger 240 from the top.

[0059] Furthermore, the compartment 15 includes a first panel 151, a second panel 152, a third panel 153, and a fourth panel 154. The first panel 151 is rectangular and is spaced apart from the housing 211. The second panel 152, the third panel 153, and the fourth panel 154 are respectively connected to the three rectangular sides of the first panel 151 and the housing 211.

[0060] The second panel 152, the third panel 153, the fourth panel 154, and the funnel structure 17 are respectively disposed on the top edge, two sides, and the bottom edge of the first panel 151 in the height direction, and together with the first panel 151, they enclose an insulated chamber 11. Specifically, in the height direction of the gas water heater 200, the second panel 152 connects the top edge of the first panel 151 to the top surface of the shell 211, and the third panel 153 and the fourth panel 154 respectively connect the two sides of the first panel 151 to the two sides of the shell 211. At least one of the first panel 151, the second panel 152, the third panel 153, and the fourth panel 154 has an air inlet 13. In one specific embodiment, the air inlet 13 is located on the first panel 151.

[0061] Thus, the second panel 152, the third panel 153, the fourth panel 154 and the funnel structure 17 of the heat preservation chamber 10 are respectively provided on the four rectangular sides of the first panel 151, surrounding the side opposite to the first panel 151 and forming a port, so that the heat preservation chamber 10 can be installed on the shell 211 of the burner 210 through the end cover.

[0062] In this way, the heat preservation chamber 10 can form a tight fit with the shell 211 of the burner 210, so that the gas in the heat preservation chamber 11 can obtain the waste heat generated by the burner 210 during operation.

[0063] In some embodiments, the edge of the heat preservation chamber 10 has an extension 19, which is used to connect the heat preservation chamber 10 to the housing 211 of the burner 210.

[0064] Furthermore, at least one of the second panel 152, the third panel 153, the fourth panel 154, and the funnel structure 17 has an extension 19 at an edge away from the first panel. Understandably, the second panel 152, the third panel 153, the fourth panel 154, and the funnel structure 17 may all have an extension 19, and each extension 19 is respectively attached to the top surface and two sides of the burner 210.

[0065] Thus, the heat preservation chamber 10 can form a stable connection with the shell 211 of the burner 210 through the extension 19.

[0066] Furthermore, the extension 19 is a bent plate, and the insulation chamber 10 is connected to the shell 211 by a snap-fit ​​connection through the extension 19. Understandably, a corresponding mating structure that mates with the extension 19 can be formed on the shell 211.

[0067] In this way, the heat preservation chamber 10 can be quickly installed on the housing 211 of the burner 210 by means of a snap-fit ​​connection.

[0068] In some other embodiments, the two sides and the edge of the top surface of the burner 210 housing 211 can form extensions and be constructed with a curved arc structure, which is used to form a snap-fit ​​connection with the insulation chamber 10. During installation, simply align the three sides of the housing 211 with the port of the insulation chamber 10, and snap the curved arc structure of the housing 211 onto the corresponding position of the insulation chamber 10 to achieve fixation.

[0069] Furthermore, the heat preservation chamber 10 is connected to the housing 211 of the burner 210 via an extension 19 through a threaded connection. Understandably, the threaded connection can be, but is not limited to, screws, etc., and the extension 19 and the housing 211 are respectively provided with through holes 155 for the threaded connection to pass through.

[0070] In this way, the heat preservation chamber 10 can be further fixed to the housing 211 of the burner 210, preventing it from detaching from the housing 211 of the burner 210 during operation.

[0071] The aforementioned cleaning device 100 and gas water heater 200 are combined by adding a small heat-insulating chamber 10 with four sides (left, right, top, and front) to the burner 210 casing. The lower end of the heat-insulating chamber 10 has a trapezoidal funnel structure 17. An expanded metal gas guide pipe 50 is provided at the outlet end interface of the funnel structure 17, and a small fan 30 is provided at the port of the gas guide pipe 50. The small fan 30 can be directed towards the water inlet of the gas water heater 200. The bottom of the left, right, and front sides of the heat-insulating chamber 10 is connected to the trapezoidal funnel to form an integral structure. The left, right, and top sides of the heat-insulating chamber 10 are connected to the burner 210 casing 211 via an extension 19, and the heat-insulating chamber 10 and the burner 210 casing 211 are fixed by fixing screws at both ends on the left and right sides. The upper part of the insulation chamber 10 (i.e., the second panel 152) is connected to the cover plate 2112 of the burner 210 by a bend in the extension 19. During normal operation of the gas water heater 200, the insulation chamber 10 can store a portion of the waste heat from the burner 210's operation using its internal heat storage chamber. This waste heat is then used to heat the gas, which is then transported to the fan 30 via a trapezoidal funnel and a gas guide pipe 50. The trapezoidal funnel is located at the bottom of the chamber body 15 and is sealed to it. The trapezoidal funnel has four sides, each gradually narrowing inwards from top to bottom, culminating in a circular interface with a four-sided seal. A circular metal gas guide pipe 50 of a certain thickness is connected to this circular interface. The gas guide pipe 50 has a profiled opening at its end for easy connection to the fan 30.

[0072] During operation of the gas water heater 200, the fan 30 starts, and the fan 30, at high speed, transfers the heating gas in the insulation chamber 10 through the trapezoidal funnel and the gas guide pipe 50 to the water inlet of the gas water heater 200. Due to the high airflow velocity and the heat carried by the airflow, leaks from the water pump and other parts can be dried and removed in a timely manner during use, preventing water from accumulating inside the gas water heater 200 for a long time, which could cause corrosion and rust on the outer casing 230 of the gas water heater 200, affect the operation of the circuit, and cause safety problems such as electric leakage.

[0073] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A cleaning device, characterized in that, The cleaning device is used in a gas water heater and includes: A heat-insulating chamber (10) is provided on the burner (210) of the gas water heater and has a heat-insulating cavity (11) therein; and The fan (30) has an air inlet and an air outlet. The air inlet is connected to the heat preservation chamber (11), and the air outlet is used to connect to the leak point (220) of the gas water heater.

2. The cleaning device according to claim 1, characterized in that, The heat-insulating chamber (10) includes a chamber body (15) and a funnel structure (17). The heat-insulating chamber (11) is formed inside the chamber body (15). The funnel structure (17) has an inlet end and an outlet end, and the flow area of ​​the inlet end is greater than the flow area of ​​the outlet end. The inlet end is connected to and communicates with the heat-insulating chamber (11), and the outlet end is connected to the air inlet of the fan (30).

3. The cleaning device according to claim 2, characterized in that, The cleaning device also includes an air guide pipe (50) having an air inlet and an air outlet. The air inlet is connected to and communicates with the outlet of the funnel structure (17), and the air outlet faces the leak point (220).

4. The cleaning device according to claim 3, characterized in that, The fan (30) is located at the outlet end, and the air inlet faces the inlet end.

5. The cleaning device according to claim 4, characterized in that, The air outlet is a profile-shaped opening; and / or, the chamber (15) is rectangular, and the funnel structure (17) is a trapezoidal funnel.

6. The cleaning device according to claim 1, characterized in that, The heat preservation chamber (10) also has an air inlet (13) that connects to the heat preservation chamber (11).

7. A gas water heater, characterized in that, Includes the cleaning device as described in any one of claims 1-6.

8. The gas water heater according to claim 7, characterized in that, The gas water heater includes a burner (210), and the burner (210) includes a housing (211); in the height direction of the gas water heater, the heat preservation chamber (10) is provided on the side of the housing (211) and defines the heat preservation chamber (11) on the surface of the housing (211).

9. The gas water heater according to claim 8, characterized in that, The heat preservation chamber (10) includes a first panel (151), a second panel (152), a third panel (153), and a fourth panel (154). The first panel (151) is rectangular and is spaced apart from the shell (211). The second panel (152), the third panel (153), and the fourth panel (154) are respectively connected to the three rectangular sides of the first panel (151) and the shell (211).

10. The gas water heater according to claim 8, characterized in that, The edge of the insulated compartment (10) has an extension; The extension is a bent plate, and the heat preservation chamber (10) is connected to the shell (211) by a snap-fit ​​through the extension; and / or, the heat preservation chamber (10) is connected to the shell (211) through the extension by a threaded part.

11. The gas water heater according to claim 7, characterized in that, The gas water heater also includes a housing (230) and a water inlet pipe (251). The housing (230) has a water inlet and is connected to the water inlet pipe (251) through the water inlet. The leak point (220) includes the water inlet.

Images