Water heater with composite incrustation cleaning structure

Abstract

The utility model relates to a water heater with a composite incrustation cleaning structure, which comprises an inner container, a positioning support shell and an outer protective shell, the positioning support shell and the outer protective shell are sleeved and wrapped on the inner container in a sequentially stacked manner, and a scraping component and an oscillating component are respectively arranged on the inner side and the outer side of the inner container. A transmission assembly is installed at the top of the inner container, wherein the transmission assembly drives the scraping assembly and the oscillating assembly to move synchronously and removes scale accumulated on the inner wall of the inner container in a scraping and sweeping mode and a knocking and oscillating mode. An electric heating assembly capable of heating water in the cavity of the inner container is adjustably attached to the outer side wall of the inner container. According to the water heater, scale accumulated in the heating inner container of the water heater can be efficiently removed through the dual functions of the built-in scraping structure and the external knocking structure.

Description

Technical Field

[0001] The utility model relates to the technical field of electric water heaters, in particular to a water heater with a composite scale cleaning structure. Background Art

[0002] An electric water heater is a water heater that uses electricity as energy for heating. It is one of the three major water heaters along with gas water heaters and solar water heaters. At present, the outlet water temperature of a water heater can usually reach 50 to 60 degrees Celsius. Water is most likely to scale in this temperature range. If the water tank is not cleaned regularly, a lot of dirt formed by residual materials will accumulate in the water tank. The scale adheres to the inside of the water heater, causing the heat exchange capacity to decrease. If it is not cleaned in time, it will not only cause a waste of resources, but also reduce the life of the heating tube, and even cause overheating damage, thereby reducing the service life of the water heater and making it inconvenient for users to use it for a long time. The traditional way to clean scale is usually to disassemble the heated pipe / water tank section of the water heater, and then remove the scale accumulated on the inner wall of the component. In addition, the scale on the inner wall of the water tank can be removed by knocking on the water tank so that the scale falls off under the action of vibration force.

[0003] However, the traditional plug-in descaling device is limited by the cross-sectional size of the water tank delivery port and cannot effectively contact and scrape the inner wall of the water tank, making cleaning difficult and unable to effectively and thoroughly clean the scale. In addition, in order to ensure the sealing of the pipes and the tank, the existing water heater is difficult to disassemble and assemble, making the scale cleaning work cumbersome and difficult to perform, and the cleaning effect is difficult to ensure. Utility Model Content

[0004] The utility model aims to provide a water heater with a composite scale cleaning structure which can efficiently remove the scale accumulated in the heating tank of the water heater through the dual effects of a built-in scraping structure and an external knocking structure, so as to solve the defects of the traditional disassembly scale cleaning method, such as high difficulty and tediousness in operation, inability to effectively and comprehensively remove the scale inside the water tank, poor cleaning quality, and the execution of the disassembly operation is very likely to cause the water tank and pipeline to have reduced airtightness and cause water leakage.

[0005] The technical solution adopted by the utility model is: a water heater with a composite scale cleaning structure, comprising an inner tank, a positioning support shell and an outer protective shell, the positioning support shell and the outer protective shell are arranged on the inner tank in a stacked manner, a scraping component and an oscillating component are respectively arranged on the inner and outer sides of the inner tank, and a transmission component is installed on the top of the inner tank for driving the scraping component and the oscillating component to move synchronously to remove the scale accumulated on the inner wall of the inner tank by scraping and knocking and oscillating respectively, and an electric heating component capable of heating the water in its chamber is also adjustably attached to the outer wall of the inner tank.

[0006] According to a preferred embodiment, the transmission assembly includes a positioning plate, a double-tooth transmission plate, a sleeve bearing, a transmission gear and a rotary drive motor, wherein the positioning plate is mounted on the top of the inner tank, and the sleeve bearing is inserted at the center of the positioning plate; the double-tooth transmission plate is sleeved on the end of the sleeve bearing away from the positioning plate; the rotary drive motor is mounted on the inner top surface of the positioning support shell, and the transmission gear is connected to the output shaft at its axial lower end; the double-tooth transmission plate is meshed with the transmission gear for transmission.

[0007] According to a preferred embodiment, the outer sleeve of the plug-in bearing is inserted into the positioning plate, and the bottom end of the outer sleeve is connected to the top surface of the inner tank; an inner sleeve is rotatably inserted in the outer sleeve, and the upper section of the inner sleeve extending to the outside of the outer sleeve is inserted on the double-tooth transmission plate.

[0008] According to a preferred embodiment, the double-tooth transmission disc comprises an upper toothed disc and a lower toothed disc coaxially stacked, wherein the upper toothed disc meshes with the transmission gear for transmission.

[0009] According to a preferred embodiment, the first rotating shaft of the scraping assembly is inserted into the inner sleeve of the plug-in bearing; the axial lower end of the first rotating shaft inserted into the inner tank is connected with a screw, a threaded sleeve is threadedly sleeved on the screw, and the threaded sleeve is connected to a cleaning ring plate abutting against the inner side wall of the inner tank through connecting rods arranged circumferentially at intervals, and a guide rod is also movably inserted on the threaded sleeve.

[0010] According to a preferred embodiment, the second rotating shaft of the oscillation component is arranged on the outer side of the inner shell in parallel with the axial direction thereof, the second rotating shaft is rotatably inserted into the positioning disk, and the axial upper end of the second rotating shaft is sleeved with rotating teeth, and the rotating teeth are meshed with the lower gear disk; round blocks are sleeved at intervals on the rod body of the second rotating shaft on the outer side of the inner shell, and a knocking bar is rotatably inserted into the circumferential wall of the round block.

[0011] According to a preferred embodiment, the electric heating component includes an arc plate, an elastic telescopic rod and an electric heating film layer, wherein the arc plate is laterally supported on the inner wall of the positioning support shell by the elastic telescopic rod, and a plurality of the arc plates are arranged circumferentially at intervals in a staggered distribution manner with the oscillation component; the electric heating film layer abutting against the side wall of the inner tank is provided on the arc surface of the arc plate facing the inner tank.

[0012] According to a preferred embodiment, a transverse limiting elastic member arranged at intervals in annular direction and a supporting elastic member supported on the bottom surface of the inner pot are arranged in the shell of the positioning support shell. According to a preferred embodiment, a water inlet is plugged into the upper side wall of the shell of the inner pot, a sewage outlet is plugged into the bottom of the shell, and a water outlet is also plugged into the side wall below the electric heating component; a one-way valve and an on-off solenoid valve that allow water to flow in and out in one direction are respectively arranged in the water inlet and outlet; a sewage valve is connected to the lower end of the sewage outlet.

[0013] According to a preferred embodiment, the end of the water inlet pipe away from the gallbladder shell sequentially penetrates the positioning support shell and the outer protective shell to be connected to the water supply pipeline; the end of the water outlet pipe away from the gallbladder shell sequentially penetrates the positioning support shell and the outer protective shell to be connected to the water supply pipeline.

[0014] The beneficial effects of the utility model are:

[0015] The scraping assembly and the oscillating assembly provided in the present application can respectively start to scrape and clean the inner side wall of the inner tank and knock and oscillate the outer wall under the drive of the same transmission assembly, so as to quickly and effectively clean the scale accumulated and attached inside the inner tank. The present application avoids the tediousness and difficulty of disassembling and cleaning by pre-installing the scraping assembly, and can also solve the problem that the connection port of the existing water tank is narrow and the scale cleaning device cannot be effectively inserted and the inserted scale cleaning device cannot effectively and comprehensively contact the inner wall, thereby greatly improving the cleaning effect and quality, so as to comprehensively clean the scale on the side wall, improve the effectiveness of its heat conduction, and also improve the convenience of the cleaning operation. The oscillating assembly can synchronously perform intermittent knocking actions, so as to transmit the oscillating impact to the inner tank in the process of hitting the inner tank made of metal material, so as to promote the scale attached to the inner wall of the inner tank to fall off, thereby assisting in completing effective scale cleaning. The transmission assembly provided in the present application can simultaneously drive multiple components to move synchronously so that the double cleaning work can be carried out synchronously, which greatly improves the efficiency and effect of scale cleaning. The non-disassembly cleaning of the present application improves the efficiency and convenience of scale removal while avoiding the disassembly and assembly of closed channels, reducing the risk of water leakage in closed channels and improving the service life to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a preferred water heater with a composite scale cleaning structure proposed by the utility model;

[0017] Figure 2 It is a cross-sectional schematic diagram of an electric heating component and an oscillating component area of ​​a water heater with a composite scale cleaning structure proposed by the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of a scraping component area of ​​a water heater with a composite scale cleaning structure proposed by the utility model;

[0019] Figure 4 It is a top view of a transmission component area of ​​a water heater with a composite scale cleaning structure proposed by the utility model.

[0020] Reference numerals list

[0021] 1: Inner liner; 2: Positioning support shell; 3: Outer protective shell; 4: Scraping assembly; 5: Oscillation assembly; 6: Transmission assembly; 7: Electric heating assembly; 11: liner shell; 12: Water inlet; 13: Drain outlet; 14: Water outlet; 15: One-way valve; 16: Open and close solenoid valve; 17: Drain valve; 21: Shell; 22: Horizontal limit elastic member; 23: Support elastic member; 41: First rotating shaft; 42: Screw; 43: Threaded sleeve; 44: Connecting rod; 45: cleaning ring plate; 46: guide rod; 51: second rotating shaft; 52: rotating teeth; 53: round block; 54: knocking bar; 55: positioning angle plate; 61: positioning plate; 62: double-tooth transmission plate; 63: plug-in bearing; 64: transmission gear; 65: rotary drive motor; 621: upper tooth plate; 622: lower tooth plate; 631: outer sleeve; 632: inner sleeve; 71: arc plate; 72: elastic telescopic rod; 73: electric heating film layer. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be briefly introduced below in combination with the drawings and the descriptions of the embodiments or the prior art. Obviously, the following descriptions of the structures of the drawings are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] The technical solution provided by the present invention will be described in detail below by way of examples with reference to the accompanying drawings. It should be noted that the description of these examples is used to help understand the present invention, but does not constitute a limitation of the present invention. In some examples, some implementation methods are not described or are not described in detail because they belong to existing or conventional technologies.

[0024] In addition, the technical features recorded in this article, or the steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can also be combined in any suitable manner in one or more embodiments. For those skilled in the art, it is easy to understand that the steps or operation sequence of the methods related to the embodiments provided herein can also be changed. Any order in the drawings and embodiments is only for illustrative purposes and does not imply a requirement to follow a certain order unless it is explicitly stated that a certain order is required.

[0025] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, under reasonable circumstances (not constituting a self-contradiction), include direct and indirect connections (couplings).

[0026] The following is a detailed description with reference to the accompanying drawings.

[0027] Example 1

[0028] The present application provides a water heater with a composite scale cleaning structure, which includes an inner tank 1, a positioning support shell 2, an outer protective shell 3, a scraping component 4, an oscillating component 5, a transmission component 6 and an electric heating component 7.

[0029] according to Figure 1-4In a specific embodiment shown, the positioning support shell 2 and the outer protective shell 3 are sleeved and wrapped on the inner tank 1 in a stacked manner. A scraping component 4 and an oscillating component 5 are respectively provided on the inner and outer sides of the inner tank 1. A transmission component 6 is installed on the top of the inner tank 1 to drive the scraping component 4 and the oscillating component 5 to move synchronously and remove the scale accumulated on the inner wall of the inner tank 1 by scraping and knocking and shaking respectively. An electric heating component 7 capable of heating the water in its chamber is also adjustably attached to the outer wall of the inner tank 1. The scraping component 4 and the oscillating component 5 provided in the present application can start to scrape and clean the inner wall of the inner tank 1 and knock and shake the outer wall respectively under the drive of the same transmission component 6, so as to quickly and effectively clean the scale accumulated and attached to the inside of the inner tank 1. The present application avoids the tediousness and difficulty of disassembling and cleaning by pre-installing the scraping component 4, and can also solve the problem that the connection port of the existing water tank is narrow and the scale cleaning device cannot be effectively inserted and the inserted scale cleaning device cannot effectively and comprehensively contact the inner wall, thereby greatly improving the cleaning effect and quality, so as to comprehensively clean the scale on the side wall, improve the effectiveness of its heat conduction, and also improve the convenience of the cleaning operation. The oscillation component 5 can synchronously perform intermittent knocking actions, so as to transmit the oscillation impact to the inner tank 1 in the process of hitting the inner tank 1 made of metal material, so as to promote the scale attached to the inner wall of the inner tank 1 to fall off, thereby assisting in completing effective scale cleaning, and direct knocking and flexible deflection can avoid knocking damage to the inner tank 1 while ensuring the transmission efficiency of the oscillation force, ensuring the strength and effect of the impact. The transmission component 6 provided in the present application can simultaneously drive multiple components to move synchronously so that the double cleaning work can be carried out synchronously, which greatly improves the efficiency and effect of scale cleaning. The non-disassembly cleaning of the present application improves the efficiency and convenience of scale removal while avoiding the disassembly and assembly of closed channels, reducing the risk of water leakage in closed channels and improving the service life to a certain extent.

[0030] Preferably, a water inlet pipe 12 is plugged into the upper side wall of the gallbladder shell 11 of the inner tank 1. Preferably, a sewage outlet 13 is plugged into the bottom of the gallbladder shell 11. Preferably, a water outlet pipe 14 is also plugged into the side wall below the electric heating component 7. Further preferably, a one-way valve 15 and an opening and closing solenoid valve 16 that allow water to flow in and out in one direction are respectively provided in the water inlet pipe 12 and the water outlet pipe 14. Preferably, a sewage valve 17 is connected to the lower end of the sewage outlet 13. Preferably, the upper side wall refers to the side wall area close to the top of the gallbladder shell 11; the lower side wall refers to the side wall area close to the bottom of the gallbladder shell 11. Further preferably, the water outlet pipe 14 is arranged on the lower side wall with a certain spacing distance from the bottom. Preferably, the end of the water inlet pipe 12 away from the gallbladder shell 11 passes through the positioning support shell 2 and the outer protective shell 3 in sequence and is connected to the water supply pipeline. Preferably, the end of the water outlet 12 away from the shell 11 passes through the positioning support shell 2 and the outer protective shell 3 in sequence and is connected to the water pipeline. Preferably, the water pipeline refers to the terminal pipeline of the urban water pipeline network. Preferably, the water pipeline refers to the hot water delivery path laid indoors to deliver hot water to functional areas such as showers and kitchens.

[0031] Preferably, a transverse limiting elastic member 22 arranged at intervals in the annular direction and a supporting elastic member 23 supported on the bottom surface of the inner liner 1 are provided in the shell 21 of the positioning support shell 2. The transverse limiting elastic member 22 and the supporting elastic member 23 provided in the present application can cooperate with each other to elastically limit the position of the inner liner 1, so that it can still maintain a high stability and weak external transmission of shock during the knocking process, thereby ensuring the connection stability of the overall structure of the device.

[0032] Preferably, the scraping assembly 4 includes a first rotating shaft 41, a screw 42, a threaded sleeve 43, a connecting rod 44, a cleaning ring plate 45 and a guide rod 46. Preferably, the first rotating shaft 41 is inserted into the inner sleeve 632 of the plug-in bearing 63, so as to rotate with the inner sleeve 632. Preferably, the axial lower end of the first rotating shaft 41 inserted into the inner liner 1 is connected with a screw 42. Specifically, a sealing ring is provided at the position where the first rotating shaft 41 passes through the inner liner 1 to ensure the airtightness of the insertion. Further preferably, the first rotating shaft 41 is rotatably plugged through a closed bearing, so as to ensure its rotatability and closeness. Preferably, a threaded sleeve 43 is threadedly sleeved on the screw 42. Preferably, the threaded sleeve 43 is connected to the cleaning ring plate 45 abutting against the inner side wall of the inner liner 1 through a connecting rod 44 arranged at intervals in the annular direction. Further preferably, a guide rod 46 is also movably penetrated on the threaded sleeve 43. Specifically, the axial upper end of the guide rod 46 is connected to the inner top surface of the inner tank 1, so that the screw 42 follows the rotation of the first rotating shaft 41 to drive the cleaning ring plate 45 to follow the threaded sleeve 43 for axial reciprocating translation, so that the lifting and lowering translation of the cleaning ring plate 45 against the inner wall of the inner tank 1 can effectively scrape off the scale attached to the inner wall of the inner tank 1.

[0033] Preferably, the oscillation assembly 5 includes a second rotating shaft 51, a rotating tooth 52, a round block 53, a knocking bar 54 and a positioning angle plate 55. Preferably, the second rotating shaft 51 is arranged on the outer side of the inner tank 1 in parallel with the axial direction thereof. Preferably, the second rotating shaft 51 is rotatably inserted on the positioning disk 61. Further preferably, the axial upper end of the second rotating shaft 51 is sleeved with a rotating tooth 52. Specifically, the rotating tooth 52 is meshed with the lower toothed disk 642. Preferably, the second rotating shaft 51 is rotatably inserted on the positioning disk 61 through a bearing to locate the relative plug-in position of the second rotating shaft 51 and the positioning disk 61 in the vertical direction, thereby synchronously limiting the meshing state of the rotating tooth 52 and the lower toothed disk 642. The second rotating shaft 51 can rotate around the axis following the rotating tooth 52. Preferably, a plurality of second rotating shafts 51 are rotatably inserted on the same positioning disk 61 in a circumferentially spaced arrangement. Preferably, a round block 53 is sleeved at intervals on the rod body where the second rotating shaft 51 is on the outside of the inner liner 1. Further preferably, a knocking bar 54 is rotatably inserted in the circumferential wall of the round block 53. In the process of the round block 53 rotating with the second rotating shaft 51, the knocking bar 54 rotates with the round block 53, and under the action of centrifugal force, its axis gradually coincides with the radial direction of the round block 53, so that the knocking bar 54, which is an extension of the round block 53, can intermittently hit the outer wall of the inner liner 1 during the rotation process, and then transmit shock to the shell wall of the inner liner 1, and then use the shock force to make the scale attached to the inner liner 1 fall off. Preferably, a positioning angle plate 55 is also provided at the bottom of the inner liner 1, and the axial lower end of the second rotating shaft 51 is rotatably inserted in the positioning angle plate 55.

[0034] Preferably, the transmission assembly 6 includes a positioning disk 61, a double-tooth transmission disk 62, a sleeve bearing 63, a transmission gear 64 and a rotary drive motor 65. Preferably, the positioning disk 61 is installed on the top of the inner liner 1. Preferably, a sleeve bearing 63 is inserted at the center of the positioning disk 61. Preferably, a double-tooth transmission disk 62 is sleeved on one end of the sleeve bearing 63 away from the positioning disk 61. Preferably, the rotary drive motor 65 is installed on the inner top surface of the positioning support shell 2, and a transmission gear 64 is connected to the output shaft at its axial lower end. Preferably, the double-tooth transmission disk 62 is meshed with the transmission gear 64 for transmission. Preferably, the outer sleeve 631 of the sleeve bearing 63 is inserted into the positioning disk 61, and the bottom end of the outer sleeve 631 is connected to the top surface of the inner liner 1. Preferably, an inner sleeve 632 is rotatably inserted in the outer sleeve 631, and the upper tube body of the inner sleeve 632 extending to the outside of the outer sleeve 631 is inserted on the double-toothed transmission disc 62 to define a coaxial line between the positioning disc 61 and the double-toothed transmission disc 62 and a relative position in which the disc bodies are parallel to each other. Preferably, the double-toothed transmission disc 62 includes an upper toothed disc 621 and a lower toothed disc 642 coaxially stacked, and the upper toothed disc 621 is meshed with the transmission gear 64 for transmission.

[0035] Preferably, the electric heating assembly 7 includes an arc plate 71, an elastic telescopic rod 72 and an electric heating film layer 73. Preferably, the arc plate 71 is laterally supported on the inner wall of the positioning support shell 2 by the elastic telescopic rod 72. Further preferably, a plurality of arc plates 71 are arranged circumferentially at intervals in a staggered distribution with the oscillation assembly 5. Preferably, an electric heating film layer 73 abutting against the side wall of the inner tank 1 is provided on the arc surface of the arc plate 71 facing the inner tank 1, so that the inner tank 1 is heated by heat transfer. Specifically, the electric heating film layer 73 is used to replace the traditional electric heating tube to realize water-electricity separation heating. The electric heating film layer 73 is abutted against the outer wall of the inner tank 1. The electrical wiring and control lines of the electric heating film layer 73 can be directly connected to the control panel on the outer protective shell 3 with the electric heating port. Since this type of connection belongs to the prior art, it will not be described here. The electric heating film layer 73 can heat the metal shell wall of the inner liner 1. The metal inner liner wall quickly conducts heat to the water and around the inner liner 1. Since the temperature is highest near the heat source, the water in the lower section of the inner liner 1 heats up the fastest. After being heated, the water rises rapidly, and the cold water on the top sinks rapidly, forming convection, thereby driving the water in the entire cavity to circulate, and the water in the cavity can be evenly heated to the required temperature.

[0036] The present utility model is not limited to the above optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope of the claims of the present utility model fall within the protection scope of the present utility model. Those skilled in the art should understand that the present utility model specification and its drawings are illustrative and do not constitute limitations on the claims. The protection scope of the present utility model is defined by the claims and their equivalents. Throughout the text, the features guided by "preferably" are only an optional method and should not be understood as having to be set. Therefore, the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. A water heater with a composite scale cleaning structure, comprising an inner tank (1), a positioning support shell (2) and an outer protective shell (3), wherein the positioning support shell (2) and the outer protective shell (3) are sheathed and wrapped on the inner tank (1) in a sequentially stacked manner, characterized in that: A scraping assembly (4) and an oscillating assembly (5) are respectively arranged on the inner side and the outer side of the inner container (1), and a transmission assembly (6) is installed on the top of the inner container (1) for driving the scraping assembly (4) and the oscillating assembly (5) to move synchronously so as to remove the scale accumulated on the inner wall of the inner container (1) by means of scraping and knocking and oscillating, respectively. An electric heating component (7) capable of heating the water in the chamber is also adjustably attached to the outer wall of the inner container (1).

2. The water heater with a composite scale cleaning structure according to claim 1, characterized in that: The transmission assembly (6) comprises a positioning plate (61), a double-tooth transmission plate (62), a sleeve bearing (63), a transmission gear (64) and a rotary drive motor (65), wherein: The positioning plate (61) is installed on the top of the inner container (1), and the sleeve bearing (63) is inserted at the center of the positioning plate (61); The double-tooth transmission disc (62) is sleeved on one end of the insert bearing (63) away from the positioning disc (61); The rotary drive motor (65) is mounted on the inner top surface of the positioning support shell (2), and the output shaft at the axial lower end thereof is connected to the transmission gear (64); The double-tooth transmission disc (62) is meshed with the transmission gear (64) for transmission.

3. The water heater with a composite scale cleaning structure according to claim 2, characterized in that: The outer sleeve (631) of the plug-in bearing (63) is inserted into the positioning plate (61), and the bottom end of the outer sleeve (631) is connected to the top surface of the inner liner (1); An inner sleeve (632) is rotatably inserted in the outer sleeve (631), and the inner sleeve (632) The upper tube body extending to the outside of the outer sleeve (631) is inserted on the double-tooth transmission disc (62).

4. The water heater with a composite scale cleaning structure according to claim 3, characterized in that: The double-tooth transmission disc (62) comprises an upper toothed disc (621) and a lower toothed disc (622) coaxially stacked, wherein: The upper toothed disc (621) is meshed with the transmission gear (64) for transmission.

5. The water heater with a composite scale cleaning structure according to claim 4, characterized in that: The first rotating shaft (41) of the scraping assembly (4) is inserted into the inner sleeve (632) of the plug-in bearing (63); The first rotating shaft (41) is inserted into the axial lower end of the inner container (1) and is connected to a screw rod (42). A threaded sleeve (43) is threadedly sleeved on the screw rod (42), and the threaded sleeve (43) is connected to a cleaning ring plate (45) abutting against the inner wall of the inner container (1) through connecting rods (44) arranged at intervals in the circumferential direction. A guide rod (46) is also movably inserted into the threaded sleeve (43).

6. The water heater with a composite scale cleaning structure according to claim 5, characterized in that: The second rotating shaft (51) of the oscillating assembly (5) is arranged on the outer side of the inner container (1) in parallel with the axial direction thereof. The second rotating shaft (51) is rotatably disposed on the positioning disk (61), and a rotating tooth (52) is sleeved on the axial upper end of the second rotating shaft (51), and the rotating tooth (52) is meshed with the lower tooth disk (622); A round block (53) is sleeved on the rod body of the second rotating shaft (51) located outside the inner container (1), and a knocking bar (54) is rotatably inserted into the circumferential wall of the round block (53).

7. The water heater with a composite scale cleaning structure according to claim 6, characterized in that: The electric heating assembly (7) comprises an arc plate (71), an elastic telescopic rod (72) and an electric heating film layer (73), wherein: The arc plate (71) is laterally supported on the inner wall of the positioning support shell (2) by the elastic telescopic rod (72), and a plurality of the arc plates (71) are arranged in an annular manner in a staggered distribution with the oscillating component (5); The electric heating film layer (73) is arranged on the arc surface of the arc plate (71) facing the inner pot (1) and is attached to the side wall of the inner pot (1).

8. The water heater with a composite scale cleaning structure according to claim 7, characterized in that: A transverse limiting elastic member (22) arranged at intervals in an annular direction and a supporting elastic member (23) supported on the bottom surface of the inner container (1) are arranged in the shell (21) of the positioning support shell (2).

9. The water heater with a composite scale cleaning structure according to claim 8, characterized in that: A water inlet (12) is inserted into the upper side wall of the shell (11) of the inner liner (1). The bottom of the gallbladder shell (11) is plugged with a sewage outlet (13), and the side wall below the electric heating component (7) is also plugged with a water outlet (14); A one-way valve (15) and an on-off solenoid valve (16) for allowing water to flow in and out in one direction are respectively arranged in the water inlet pipe port (12) and the water outlet pipe port (14); The lower end of the sewage outlet (13) is connected to a sewage valve (17).

10. The water heater with a composite scale cleaning structure according to claim 9, characterized in that: One end of the water inlet pipe port (12) away from the gallbladder shell (11) passes through the positioning support shell (2) and the outer protective shell (3) in sequence and is connected to the water delivery pipeline; One end of the water outlet pipe (14) away from the gallbladder shell (11) passes through the positioning support shell (2) and the outer protective shell (3) in sequence and is connected to the water pipeline.

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