Warm water device for face washing room of high-speed rail motor train unit

Abstract

The invention discloses a high-speed train face washing room water heater which comprises a water heater back plate, an exhaust valve is fixedly connected to the upper portion of the front end of the water heater back plate, a pressure release valve is fixedly connected to one end of the exhaust valve, and a water tank is fixedly connected to one side of the front end of the water heater back plate. According to the face washing room water heater for the high-speed rail motor train unit, a composite damping structure composed of a positioning damping frame, an outer damping connecting frame, a damping control U-shaped frame and a positioning back plate is arranged, and the synergistic effect of a first reset elastic piece, a second reset elastic piece, a reset damper and a damping damper is combined; vibration and impact energy generated in the running process of a train can be absorbed and dissipated in a multi-direction and multi-level mode, so that the water tank, the heating pipe, the water inlet valve, the first-level controller, the second-level controller and other core components are effectively protected against the influence of strong vibration, the risks of component looseness and fatigue damage are remarkably reduced, and the service life of the whole machine is prolonged.

Description

Technical Field

[0001] This invention relates to the technical field of water heaters, specifically a water heater for the washroom of a high-speed train. Background Technology

[0002] The water heaters in the washrooms of high-speed trains are important equipment for providing passengers with a stable supply of warm water. They are usually installed inside the train carriages, where the train will continuously generate vibrations and impacts during high-speed operation.

[0003] Traditional water heaters have a relatively simple installation structure and lack targeted vibration reduction measures. Working in a vibrating environment for a long time can easily lead to problems such as loosening of internal connectors, fatigue damage to water tanks and pipe joints, and failure of electrical component connections, affecting the reliability and safety of use. The disassembly and assembly process of existing water heaters from the vehicle body during maintenance or replacement may be cumbersome and inconvenient for quick disassembly. At the same time, the pressure and liquid level control during the water tank heating process are directly related to the safe and stable operation of the equipment, which brings certain adverse effects to the user experience. Therefore, we propose a water heater for the washroom of high-speed train sets. Summary of the Invention

[0004] Technical Problem Solved: Addressing the shortcomings of existing technologies, this invention provides a hot water heater for the washrooms of high-speed trains. It possesses advantages such as vibration and impact resistance and constant water temperature. Through a composite vibration damping structure consisting of a positioning damping frame, an external vibration damping connecting frame, a vibration damping control U-shaped frame, and a positioning backplate, combined with the synergistic action of a first reset elastic element, a second reset elastic element, a reset damper, and a vibration damping damper, it can absorb and dissipate vibration and impact energy generated during train operation in multiple directions and at multiple levels. This effectively protects core components such as the water tank, heating pipe, inlet valve, primary controller, and secondary controller from strong vibrations. The impact of severe vibration is significantly reduced, thus lowering the risk of component loosening and fatigue damage, extending the overall service life of the machine, and enhancing the long-term stable operation of the water heater in high-speed moving environments. The positioning shock absorber and the external shock absorber connecting frame achieve preliminary positioning and connection through the engagement of the preliminary positioning triangular block and the preliminary positioning bayonet, forming a modular installation unit. This design allows the module containing the water heater body, including the water heater back plate, water tank, etc., to be quickly combined and separated from the positioning back plate assembly fixed on the vehicle body, greatly simplifying the installation, inspection, and replacement process, improving maintenance efficiency, and effectively solving the problems in the background technology.

[0005] Technical Solution: To achieve the above objectives, the technical solution adopted by this invention is as follows: a water heater for the washroom of a high-speed train, comprising a water heater back plate, an exhaust valve fixedly connected to the upper part of the front end of the water heater back plate, a pressure relief valve fixedly connected to one end of the exhaust valve, a water tank fixedly connected to one side of the front end of the water heater back plate, a water inlet valve positioned and installed on one side of the water tank, a level switch fixedly connected to the upper end of the water tank, a heating element positioned and installed inside the water tank, a primary controller fixedly connected to the lower end of the water tank, and a secondary controller positioned and installed on one side of the primary controller.

[0006] Preferably, one end of the vent valve penetrates the interior of the back panel of the water heater and is positioned therein; the other end of the vent valve is fixed to one end of the pressure relief valve via a flange; one side of the front end of the back panel of the water heater is fixed to the rear end of the water tank via bolts; the upper end of the primary controller is fixed to the lower end of the water tank via bolts; and the lower end of the inlet valve is fixed to one side of the water tank via a connecting pipe.

[0007] Preferably, a control box is fixedly connected to the other side of the front end of the water heater back plate, a positioning shock absorber is fixedly connected to the lower part of the front end of the water heater back plate, an inner movable control groove is opened on both sides of the positioning shock absorber, and a lower buffer flexible pad is fixedly connected to the outer wall of the lower end of the positioning shock absorber.

[0008] Preferably, the positioning shock absorber is detachably connected to an external shock absorber connecting frame, and the external shock absorber connecting frame is movably connected to a shock absorber control U-shaped frame. The rear end of the shock absorber control U-shaped frame is fixedly connected to a positioning back plate. The upper and lower ends of the inner movable control groove are both fixedly connected to a first guide fixing rod, and the outer wall of the first guide fixing rod is sleeved with a first reset elastic member.

[0009] Preferably, the inner wall of the inner movable control groove is movably connected to a limiting movable plate and a preliminary positioning triangular block. The limiting movable plate is sleeved on the outer wall of the first guide fixing rod and is movable. A reset damper is fixedly connected to the rear end of the limiting movable plate. Preliminary positioning slots are opened on both sides of the inner wall of the outer shock absorption connecting frame. An embedded flexible pad is fixedly connected to the lower end of the inner wall of the outer shock absorption connecting frame.

[0010] Preferably, buffer movable frames are fixedly connected to both sides of the outer wall of the outer shock-absorbing connecting frame, the inner wall of the buffer movable frame is provided with an inner movable groove, the inner wall of the positioning back plate is provided with a buffer control groove, the inner walls of the buffer control groove are fixedly connected to both sides of the inner wall of the buffer control groove, the outer wall of the second guide fixed rod is fitted with a second reset elastic member, and shock-absorbing dampers are uniformly positioned and installed in the middle of the inner wall of the buffer control groove.

[0011] Preferably, the rear end of the control box is fixed to one side of the front end of the water heater back plate with bolts, the rear end of the positioning shock absorber is fixedly connected to the lower part of the front end of the water heater back plate, and the inner wall of the lower buffer flexible pad is bonded and positioned to the inner wall of the lower end of the positioning shock absorber with strong adhesive.

[0012] Preferably, the outer wall of the embedded flexible pad is embedded in the inner wall of the lower end of the outer shock-absorbing connecting frame and is positioned by strong adhesive. One end of the buffer movable frame is fixed to both sides of the outer wall of the outer shock-absorbing connecting frame by welding. The upper and lower ends of the second guide fixing rod are fixed to both sides of the inside of the buffer control groove. The lower end of the second reset elastic member is fixedly connected to the lower end of the inside of the buffer control groove. The buffer movable frame is sleeved on the outer wall of the second guide fixing rod through the inner movable groove and is movable. The lower end of the buffer movable frame is fixedly connected to the upper end of the second reset elastic member. The outer shock-absorbing connecting frame is located inside the buffer control groove and is movable. The lower end of the outer shock-absorbing connecting frame is fixedly connected to the upper end of the shock absorber. The lower end of the shock absorber is fixedly connected to the lower end of the inside of the buffer control groove. The upper and lower ends of the inside of the inner movable control groove are fixedly connected to both ends of the first guide fixing rod. The limiting movable plate is sleeved on the outer wall of the first guide fixing rod and is movable.

[0013] Preferably, one end of the first reset elastic member is fixedly connected to the rear end inside the inner movable control groove, and the other end of the first reset elastic member is fixedly connected to the rear end of the limiting movable plate. The front end of the limiting movable plate is fixedly connected to the rear end of the preliminary positioning triangular block. The rear end of the limiting movable plate is fixedly connected to one end of the reset damper. The other end of the reset damper is fixedly connected to the rear end of the inner movable control groove. The positioning damping frame and the outer damping connecting frame are positioned by engaging with the preliminary positioning triangular block and the preliminary positioning bayonet. The inner wall of the embedded flexible pad is in contact with the lower buffer flexible pad.

[0014] Beneficial effects: Compared with the prior art, the present invention provides a hot water heater for the washroom of a high-speed train, which has the following beneficial effects: 1. This is a type of water heater for the washroom of a high-speed train. The water heater is equipped with temperature control, water shortage protection, leakage protection, over-temperature protection, and anti-dry-burning protection. The first-level over-temperature protector has a temperature range of 40℃±5℃, and the second-level over-temperature protector has a temperature range of 60℃±5℃. When the water temperature inside the tank reaches 40℃±5℃, the first-level over-temperature protector activates, cutting off the heating power to the water heater. After the first-level over-temperature protector activates, the water in the tank is allowed to cool naturally. When the water temperature cools to 30℃±5℃, the over-temperature protector resets, and the heating power to the water heater is restored. If the primary over-temperature protector fails, the water heater will continue heating. When the water temperature inside the tank reaches 60℃±5℃, the secondary over-temperature protector will activate and require manual reset. When the surface temperature of the heating chamber reaches 105℃±5°C, the water heater's heating power will be cut off within 3 seconds and cannot be reset. A level sensor is installed inside the water tank. When the water level inside the tank is lower than the level sensor, the water heater will automatically cut off the main heating circuit power and stop heating. When the water level in the tank triggers the level sensor, the water heater will automatically turn on the main heating circuit power and start heating.

[0015] 2. This high-speed train washroom water heater, through the setting of a composite shock absorption structure consisting of a positioning shock absorption frame, an external shock absorption connecting frame, a shock absorption control U-shaped frame and a positioning back plate, and combined with the synergistic effect of the first reset elastic component, the second reset elastic component, the reset damper and the shock absorption damper, can absorb and dissipate the vibration and impact energy generated during train operation in multiple directions and at multiple levels. This effectively protects the core components such as the water tank, heating pipe, water inlet valve, primary controller and secondary controller from the effects of strong vibration, significantly reduces the risk of component loosening and fatigue damage, extends the service life of the whole machine, and enhances the long-term stable operation of the water heater in high-speed moving environments.

[0016] 3. The water heater in the washroom of a high-speed train set is initially positioned and connected to the external shock-absorbing frame through the engagement of the initial positioning triangular block and the initial positioning bayonet, forming a modular installation unit. This design allows the module, which includes the water heater body, the water heater back plate, the water tank, etc., to be quickly combined and separated from the positioning back plate assembly fixed on the car body, greatly simplifying the installation, inspection and replacement process and improving maintenance efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a hot water heater in the washroom of a high-speed train according to the present invention.

[0019] Figure 2 This is a schematic plan view of the internal structure of the external shock-absorbing connecting frame, the shock-absorbing control U-shaped frame, and the positioning back plate of the hot water heater in the washroom of a high-speed train according to the present invention.

[0020] Figure 3This is a schematic diagram of removing the positioning back plate in a hot water heater in the washroom of a high-speed train according to the present invention.

[0021] Figure 4 This is an enlarged schematic diagram of the internal structure of the U-shaped frame for shock absorption control in the washroom water heater of a high-speed train according to the present invention.

[0022] Figure 5 This is a schematic diagram illustrating the removal of the external shock-absorbing connecting frame in the washroom water heater of a high-speed train according to the present invention.

[0023] Figure 6 This is an enlarged structural schematic diagram of a positioning and shock-absorbing frame in a hot water heater in the washroom of a high-speed train, according to the present invention.

[0024] In the diagram: 1. Water heater back panel; 2. Air vent valve; 3. Pressure relief valve; 4. Water inlet valve; 5. Control box; 6. Water tank; 7. Liquid level switch; 8. Heating element; 9. Primary controller; 10. Secondary controller; 11. Positioning shock absorber frame; 12. Lower buffer flexible pad; 13. External shock absorber connecting frame; 14. Shock absorber control U-shaped frame; 15. Positioning back panel; 16. Inner movable control groove; 17. First guide fixing rod; 18. First reset elastic element; 19. Limiting movable plate; 20. Preliminary positioning triangular block; 21. Reset damper; 22. Embedded flexible pad; 23. Buffer movable frame; 24. Inner movable groove; 25. Buffer control groove; 26. Second guide fixing rod; 27. Second reset elastic element; 28. Shock absorber damper; 29. ​​Preliminary positioning bayonet. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0027] like Figure 1-6 As shown, a hot water heater for the washroom of a high-speed train includes a hot water heater back plate 1. An exhaust valve 2 is fixedly connected to the upper part of the front end of the hot water heater back plate 1. A pressure relief valve 3 is fixedly connected to one end of the exhaust valve 2. A water tank 6 is fixedly connected to one side of the front end of the hot water heater back plate 1. A water inlet valve 4 is positioned and installed on one side of the water tank 6. A liquid level switch 7 is fixedly connected to the upper end of the water tank 6. A heating tube 8 is positioned and installed inside the water tank 6. A primary controller 9 is fixedly connected to the lower end of the water tank 6. A secondary controller 10 is positioned and installed on one side of the primary controller 9.

[0028] Furthermore, one end of the vent valve 2 penetrates the interior of the back plate 1 of the water heater and is positioned therein. The other end of the vent valve 2 is fixed to one end of the pressure relief valve 3 by a flange. One side of the front end of the back plate 1 of the water heater is fixed to the rear end of the water tank 6 by bolts. The upper end of the primary controller 9 is fixed to the lower end of the water tank 6 by bolts. The lower end of the inlet valve 4 is fixed to one side of the water tank 6 by a connecting pipe to enhance the firmness.

[0029] Furthermore, a control box 5 is fixedly connected to the other side of the front end of the water heater back plate 1, and a positioning shock absorber 11 is fixedly connected to the lower part of the front end of the water heater back plate 1. Both sides of the positioning shock absorber 11 are provided with internal movable control grooves 16, and a lower buffer flexible pad 12 is fixedly connected to the outer wall of the lower end of the positioning shock absorber 11 to enhance the buffering force.

[0030] Furthermore, the external shock absorber frame 11 is detachably connected to an external shock absorber connecting frame 13, and the external shock absorber connecting frame 13 is movably connected to a shock absorber control U-shaped frame 14. The rear end of the shock absorber control U-shaped frame 14 is fixedly connected to a positioning back plate 15. The upper and lower ends of the inner movable control groove 16 are both fixedly connected to a first guide fixing rod 17. The outer wall of the first guide fixing rod 17 is fitted with a first reset elastic member 18 to provide elasticity.

[0031] Furthermore, the inner wall of the inner movable control groove 16 is movably connected to a limiting movable plate 19 and a preliminary positioning triangular block 20. The limiting movable plate 19 is sleeved on the outer wall of the first guide fixing rod 17 and moves. The rear end of the limiting movable plate 19 is fixedly connected to a reset damper 21. The two sides of the inner wall of the outer shock absorption connecting frame 13 are provided with preliminary positioning slots 29. The lower end of the inner wall of the outer shock absorption connecting frame 13 is fixedly connected to an embedded flexible pad 22.

[0032] Furthermore, buffer movable frames 23 are fixedly connected to both sides of the outer wall of the outer shock-absorbing connecting frame 13. The inner wall of the buffer movable frame 23 is provided with an inner movable groove 24. The inner wall of the positioning back plate 15 is provided with a buffer control groove 25. The inner walls of the buffer control groove 25 are fixedly connected to both sides of the inner wall of the buffer control groove 25. The outer wall of the second guide fixed rod 26 is fitted with a second reset elastic member 27. The shock absorber 28 is uniformly positioned and installed in the middle of the inner wall of the buffer control groove 25, which can play the role of shock absorption and damping.

[0033] Furthermore, the rear end of the control box 5 is fixed to one side of the front end of the water heater back plate 1 with bolts, the rear end of the positioning shock absorber 11 is fixedly connected to the lower part of the front end of the water heater back plate 1, and the inner wall of the lower buffer flexible pad 12 is bonded and positioned with the inner wall of the lower end of the positioning shock absorber 11 with strong adhesive to enhance the firmness.

[0034] Furthermore, the outer wall of the embedded flexible pad 22 is embedded in the inner wall of the lower end of the outer shock-absorbing connecting frame 13 and is positioned by strong adhesive. One end of the buffer movable frame 23 is fixed to both sides of the outer wall of the outer shock-absorbing connecting frame 13 by welding. The upper and lower ends of the second guide fixing rod 26 are fixed to both sides inside the buffer control groove 25. The lower end of the second reset elastic member 27 is fixedly connected to the lower end inside the buffer control groove 25. The buffer movable frame 23 is sleeved on the outer wall of the second guide fixing rod 26 through the inner movable groove 24 and is movable. The lower end of the buffer movable frame 23 is fixedly connected to the upper end of the second reset elastic member 27. The outer shock-absorbing connecting frame 13 is located inside the buffer control groove 25 and is movable. The lower end of the outer shock-absorbing connecting frame 13 is fixedly connected to the upper end of the shock-absorbing damper 28. The lower end of the shock-absorbing damper 28 is fixedly connected to the lower end of the interior of the buffer control groove 25. The upper and lower ends of the interior of the inner movable control groove 16 are fixedly connected to the two ends of the first guide fixing rod 17. The limiting movable plate 19 is sleeved on the outer wall of the first guide fixing rod 17 and is movable.

[0035] Furthermore, one end of the first reset elastic member 18 is fixedly connected to the rear end inside the inner movable control groove 16, and the other end of the first reset elastic member 18 is fixedly connected to the rear end of the limiting movable plate 19. The front end of the limiting movable plate 19 is fixedly connected to the rear end of the preliminary positioning triangle block 20. The rear end of the limiting movable plate 19 is fixedly connected to one end of the reset damper 21. The other end of the reset damper 21 is fixedly connected to the rear end of the inner movable control groove 16. The positioning damping frame 11 and the outer damping connecting frame 13 are positioned by engaging with the preliminary positioning triangle block 20 and the preliminary positioning bayonet 29. The inner wall of the embedded flexible pad 22 is in contact with the lower buffer flexible pad 12.

[0036] Working Principle: This is a type of warm water heater for the washrooms of high-speed trains. During use, the warm water tank in the washroom heats the water by controlling the heating element through the full water level and a thermostat, thus heating the water for handwashing. The warm water tank is equipped with primary and secondary temperature control protection and an over-temperature protector to control the heated water temperature and provide over-temperature protection. A temperature sensor is connected to one end of a 0.88-meter-long capillary tube. The temperature sensor is filled with an expansion medium. When the detected temperature changes, the medium expands and contracts, thus changing the pressure within the closed system. This pressure change is precisely transmitted to the diaphragm of the thermostat body through the capillary tube, enabling precise temperature control. All tanks are made of 304 stainless steel, offering strong corrosion resistance and acid / alkali resistance. Imported high-resistance materials are used. The high-temperature upper and lower float switches enable precise control of the liquid level. The junction box allows for all possible controls, facilitating maintenance and repair. Heating, fault, and power indicator lights provide indication. Excess steam generated during heating in the water tank 6 can be promptly discharged via the exhaust valve 2 and the pressure relief valve 3 can automatically release pressure in case of overpressure, preventing pressure buildup and potential hazards. The liquid level switch 7 monitors the water level in the water tank 6 and, in conjunction with the inlet valve 4, automatically replenishes water to prevent dry burning. The primary controller 9 and secondary controller 10 provide precise and reliable control and protection for the heating element 8, ensuring safety during the heating process. The water heater backplate 1, as the main load-bearing component, is securely fixed to the water tank 6, control box 5, and positioning shock-absorbing frame 11 using bolts or welding. The shock-absorbing structure... The first guide fixing rod 17 and the second guide fixing rod 26 ensure that the moving parts move smoothly along the designed direction, preventing deviation and ensuring the effectiveness and reliability of the entire damping system. The contact design between the lower buffer flexible pad 12 and the embedded flexible pad 22 provides soft buffering and limiting, avoiding rigid collisions and wear between metal parts, while enhancing the vibration reduction effect. By setting up a composite damping structure consisting of a positioning damping frame 11, an outer damping connecting frame 13, a damping control U-shaped frame 14, and a positioning back plate 15, and combining the synergistic effect of the first reset elastic element 18, the second reset elastic element 27, the reset damper 21, and the damping damper 28, the system can absorb and dissipate the vibrations and impacts generated during train operation in multiple directions and at multiple levels. The energy effectively protects core components such as the water tank 6, heating element 8, inlet valve 4, primary controller 9, and secondary controller 10 from strong vibrations, significantly reducing the risk of component loosening and fatigue damage, extending the service life of the entire machine, and ensuring the long-term stable operation of the water heater in high-speed moving environments. The positioning shock absorber 11 and the external shock absorber connecting frame 13 are initially positioned and connected through the engagement of the initial positioning triangular block 20 and the initial positioning bayonet 29, forming a modular installation unit. This design allows the module containing the main body of the water heater, including the water heater back plate 1 and water tank 6, to be quickly combined and separated from the positioning back plate 15 assembly fixed on the vehicle body, greatly simplifying the installation, inspection, and replacement process and improving maintenance efficiency.

[0037] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A water heater for the washroom of a high-speed train, comprising a back panel (1), characterized in that: An exhaust valve (2) is fixedly connected to the upper part of the front end of the back plate (1) of the water heater. A pressure relief valve (3) is fixedly connected to one end of the exhaust valve (2). A water tank (6) is fixedly connected to one side of the front end of the back plate (1). An inlet valve (4) is positioned and installed on one side of the water tank (6). A liquid level switch (7) is fixedly connected to the upper end of the water tank (6). A heating tube (8) is positioned and installed inside the water tank (6). A primary controller (9) is fixedly connected to the lower end of the water tank (6). A secondary controller (10) is positioned and installed on one side of the primary controller (9).

2. The high-speed train washroom water heater according to claim 1, characterized in that: One end of the exhaust valve (2) penetrates the interior of the back plate (1) of the water heater and is positioned therein. The other end of the exhaust valve (2) is fixed to one end of the pressure relief valve (3) by a flange. One side of the front end of the back plate (1) of the water heater is fixed to the rear end of the water tank (6) by bolts. The upper end of the primary controller (9) is fixed to the lower end of the water tank (6) by bolts. The lower end of the inlet valve (4) is fixed to one side of the water tank (6) by a connecting pipe.

3. A hot water heater for the washroom of a high-speed train as described in claim 2, characterized in that: A control box (5) is fixedly connected to the other side of the front end of the back plate (1) of the water heater. A positioning shock absorber (11) is fixedly connected to the lower part of the front end of the back plate (1). An inner movable control groove (16) is opened on both sides of the positioning shock absorber (11). A lower buffer flexible pad (12) is fixedly connected to the outer wall of the lower end of the positioning shock absorber (11).

4. A hot water heater for the washroom of a high-speed train as described in claim 3, characterized in that: The positioning shock absorber (11) is detachably connected to an external shock absorber connecting frame (13), and the external shock absorber connecting frame (13) is movably connected to a shock absorber control U-shaped frame (14). The rear end of the shock absorber control U-shaped frame (14) is fixedly connected to a positioning back plate (15). The upper and lower ends of the inner movable control groove (16) are fixedly connected to a first guide fixing rod (17), and the outer wall of the first guide fixing rod (17) is fitted with a first reset elastic member (18).

5. A hot water heater for the washroom of a high-speed train as described in claim 4, characterized in that: The inner wall of the inner movable control groove (16) is movably connected to a limiting movable plate (19) and a preliminary positioning triangular block (20). The limiting movable plate (19) is sleeved on the outer wall of the first guide fixing rod (17) and moves. The rear end of the limiting movable plate (19) is fixedly connected to a reset damper (21). The inner walls of the outer shock absorption connecting frame (13) are provided with preliminary positioning slots (29). The lower end of the outer shock absorption connecting frame (13) is fixedly connected to an embedded flexible pad (22).

6. A hot water heater for the washroom of a high-speed train as described in claim 5, characterized in that: Both sides of the outer wall of the external shock-absorbing connecting frame (13) are fixedly connected to the buffer movable frame (23). The inner wall of the buffer movable frame (23) is provided with an inner movable groove (24). The inner wall of the positioning back plate (15) is provided with a buffer control groove (25). Both sides of the inner wall of the buffer control groove (25) are fixedly connected to the second guide fixing rod (26). The outer wall of the second guide fixing rod (26) is fitted with a second reset elastic member (27). The middle of the inner wall of the buffer control groove (25) is uniformly positioned and installed with shock absorbers (28).

7. A hot water heater for the washroom of a high-speed train according to claim 6, characterized in that: The rear end of the control box (5) is fixed to one side of the front end of the water heater back plate (1) by bolts. The rear end of the positioning shock absorber (11) is fixedly connected to the lower part of the front end of the water heater back plate (1). The inner wall of the lower buffer flexible pad (12) is attached to the inner wall of the lower end of the positioning shock absorber (11) by strong adhesive.

8. A hot water heater for the washroom of a high-speed train according to claim 7, characterized in that: The outer wall of the embedded flexible pad (22) is embedded in the inner wall of the lower end of the outer shock-absorbing connecting frame (13) and is positioned by strong adhesive. One end of the buffer movable frame (23) is fixed to both sides of the outer wall of the outer shock-absorbing connecting frame (13) by welding. The upper and lower ends of the second guide fixing rod (26) are fixed to both sides inside the buffer control groove (25). The lower end of the second reset elastic member (27) is fixedly connected to the lower end inside the buffer control groove (25). The buffer movable frame (23) is sleeved on the outer wall of the second guide fixing rod (26) through the inner movable groove (24) and moves. The lower end of the buffer movable frame (23) is fixedly connected to the upper end of the second reset elastic member (27). The outer shock-absorbing connecting frame (13) is located inside the buffer control groove (25) and is movable. The lower end of the outer shock-absorbing connecting frame (13) is fixedly connected to the upper end of the shock-absorbing damper (28). The lower end of the shock-absorbing damper (28) is fixedly connected to the lower end of the interior of the buffer control groove (25). The upper and lower ends of the interior of the inner movable control groove (16) are fixedly connected to the two ends of the first guide fixing rod (17). The limiting movable plate (19) is sleeved on the outer wall of the first guide fixing rod (17) and is movable.

9. A hot water heater for the washroom of a high-speed train according to claim 8, characterized in that: One end of the first reset elastic member (18) is fixedly connected to the rear end inside the inner movable control groove (16), and the other end of the first reset elastic member (18) is fixedly connected to the rear end of the limiting movable plate (19). The front end of the limiting movable plate (19) is fixedly connected to the rear end of the preliminary positioning triangle block (20). The rear end of the limiting movable plate (19) is fixedly connected to one end of the reset damper (21). The other end of the reset damper (21) is fixedly connected to the rear end of the inner movable control groove (16). The positioning damping frame (11) and the outer damping connecting frame (13) are positioned by engaging the preliminary positioning triangle block (20) and the preliminary positioning bayonet (29). The inner wall of the embedded flexible pad (22) is in contact with the lower buffer flexible pad (12).

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