Energy-saving multi-stage heating type sterile drinking water machine

Abstract

The present application relates to the technical field of drinking water machine, and discloses an energy-saving multi-stage heating type sterile drinking water machine, which comprises a main machine and a heating tank, the inner side of the heating tank is provided with a heating pipe, the lower end outer surface of the heating tank is fixedly connected with a water injection pipe, the front end outer surface of the heating tank is fixedly connected with a water delivery pipe one, and the inner side of the heating tank is provided with a flow resistance component, water heated will flow upwards through overflow groove one and overflow groove two in sequence through the setting of the flow resistance component, the irregular flow of hot water can be realized through overflow groove one and overflow groove two, so that the water flow in the heating tank can be fully mixed and contacted, the rising speed of the water flow is adjusted according to the change of the water temperature around the heating pipe, so that the heating pipe can quickly heat and warm the cold water, which can not only shorten the heating time of the water flow, but also effectively improve the utilization efficiency of the heating pipe heat, and help to improve the energy-saving effect of the drinking water machine.

Description

Technical Field

[0001] This invention relates to the field of water dispenser technology, and in particular to an energy-saving multi-stage heating aseptic water dispenser. Background Technology

[0002] Water dispensers are devices that heat or cool drinking water for direct consumption. They typically have functions such as heating, cooling, and heat preservation. Multi-stage heating water dispensers are devices that improve the efficiency of hot water supply and the accuracy of temperature control through staged heating technology. By having multiple heating modules (such as preheating + main heating) work together, they can achieve precise control of water temperature and rapid heating, avoiding the energy waste of traditional single heating.

[0003] For example, Chinese utility model patent with announcement number CN218951170U discloses a new type of household multi-stage filtration and purification water dispenser. This device, by setting up an installation mechanism, eliminates the need to place the water bucket upside down on the water dispenser, reducing labor intensity and improving practicality. It also enables quick replacement and cleaning of the filter structure, preventing the filtration and purification effect from weakening and improving safety. When existing heated water dispensers use a step heating method to heat drinking water, the heating tank is mostly of the direct-flow type. After the water is heated, its temperature rises and mixes with the hot water in the upper part. During this process, the upward flow rate of the water cannot be flexibly controlled, causing some hot water that has not reached the boiling point to mix with the boiling water on the upper side. This leads to a decrease in the overall temperature of the boiling water on the upper side, requiring the heating device to continuously heat the water in the tank for a long time. This increases power consumption to a certain extent and affects the energy-saving effect of the water dispenser. Summary of the Invention

[0004] The purpose of this invention is to provide an energy-saving multi-stage heating sterile water dispenser that adjusts the upward speed of the water flow according to the change in the water temperature around the heating tube, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving multi-stage heating sterile water dispenser, comprising a main unit and a heating box, wherein a heating tube is provided inside the heating box, a water injection pipe is fixedly connected to the lower outer surface of the heating box, a water delivery pipe is fixedly connected to the front outer surface of the heating box, and a flow-blocking component is provided inside the heating box; The flow-blocking assembly includes a first baffle plate fixedly connected to the inner surface of the heating box. A thermal expansion member is fixedly connected to the lower outer surface of the baffle plate, and a second baffle plate is fixedly connected to the lower outer surface of the thermal expansion member. An overflow groove first and an overflow groove second are respectively opened through the outer surfaces of the first and second baffle plates. A cavity is provided on the inner side of both the first and second baffle plates. The flow-blocking assembly is used to adjust the water flow speed.

[0006] Preferably, the number of thermal expansion components is two sets and they are symmetrically distributed. The outer surface of the thermal expansion components has a U-shaped structure. The number of overflow groove one and overflow groove two are several sets and they are staggered. A bracket is fixedly connected to the inner surface of the main unit. The upper outer surface of the bracket is fixedly connected to the heating box. The heating pipe is distributed in a serpentine shape and located below the second baffle.

[0007] Preferably, a preheating assembly is provided on the outside of the water injection pipe. The preheating assembly includes a preheating box fixedly connected to the outer surface of the lower end of the bracket. A guide plate is provided on the inner surface of the preheating box. The guide plate is spiral-shaped and made of elastic material. The lower side of the outer surface of the guide plate is fixedly connected to the inner wall of the heating pipe.

[0008] Preferably, the guide plate is sleeved on the outside of the water injection pipe, a gas guide pipe is fixedly connected to the upper side of the outer surface of the preheating box, the upper end of the gas guide pipe is fixedly connected to the upper outer surface of the heating box, the preheating box is made of heat insulation material, and a gas venting pipe is fixedly connected to the lower side of the outer surface of the preheating box.

[0009] Preferably, the outer surface of the guide plate is provided with a flow-disrupting element, the flow-disrupting element includes a flow-blocking rod fixedly connected to the upper outer surface of the guide plate, the upper outer surface of the flow-blocking rod is embedded with an installation groove, the inner surface of the installation groove is fixedly connected with a spring, the upper end of the spring is fixedly connected to another set of guide plates, and the number of the flow-disrupting elements is several sets and they are distributed in a parallel array.

[0010] Preferably, the main unit is provided with a water outlet 1 and a water outlet 2 on its outer side. A delivery pipe is fixedly connected to the lower side of the water injection pipe. A three-way valve is provided between the delivery pipe and the water injection pipe. The upper end of the delivery pipe is connected to the interior of the water outlet 2. The end of the water delivery pipe 1 away from the heating box is connected to the water outlet 1. A pressurization and purification module is provided on the lower side of the delivery pipe. An inlet pipe is fixedly connected to the outer side of the pressurization and purification module. The inlet pipe extends to the outside of the main unit. Control valves are provided on the inner sides of the delivery pipe, the water injection pipe, and the water delivery pipe 1.

[0011] Preferably, a temperature control component is provided on the outside of the conveying pipe. The temperature control component includes a recovery pipe fixedly connected to the outer surface of the conveying pipe. A sleeve is fixedly connected to the inner surface of the recovery pipe. A slot is opened through the outer surface of the sleeve. The number of slots is several groups and they are distributed in a ring array. The end of the air venting pipe away from the preheating box is fixedly connected to the recovery pipe.

[0012] Preferably, an expansion sleeve is fixedly connected to the inner surface of the recovery tube away from the air intake tube. The expansion sleeve is arranged in a ring shape on the outside of the delivery tube. A sliding plate is fixedly connected to the outer surface of the expansion sleeve. A sealing plate is slidably connected to the outer surface of the sleeve. The sliding plate extends through to the outside of the slot and is fixedly connected to the sealing plate.

[0013] Preferably, an exhaust pipe is fixedly connected to the outer surface of the recovery pipe, the exhaust pipe is located below the intake pipe, the exhaust pipe extends to the outside of the main unit and is fixedly connected to the main unit, and a pressure relief valve is provided on the outer surface of the exhaust pipe.

[0014] Preferably, a drain trough is provided on the front side of the main unit, a water storage tank is fixedly connected to the inner surface of the main unit, the water storage tank is located below the drain trough, a button is provided on the outer surface of the front end of the main unit, a temperature sensor and a level gauge are provided on the inner side of the heating box, and the button, temperature sensor, pressurization and purification module and level gauge are all electrically connected to the water dispenser control system.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This solution uses a flow-blocking component to ensure that heated water flows upward through overflow trough one and overflow trough two in sequence. The irregular flow of hot water through overflow trough one and overflow trough two allows for thorough mixing and contact of the water inside the heating tank. The upward speed of the water flow is adjusted according to the temperature changes of the water around the heating element, enabling the heating element to quickly heat the cold water. This not only shortens the heating time but also effectively improves the heat utilization efficiency of the heating element, thus contributing to the energy-saving effect of the water dispenser. 2. This solution incorporates a preheating component, allowing water vapor to flow downwards in a spiral pattern inside the preheating chamber. This ensures that the water vapor fully contacts the outer surface of the water injection pipe, enabling heat transfer through the pipe to preheat the water. This ensures that the water reaches a certain initial temperature before entering the heating chamber, maximizing heat utilization and improving energy efficiency. It also effectively shortens the heating time of the water inside the heating chamber, thus enhancing the heating effect. 3. This solution uses a thermostatic component to adjust the temperature of room temperature water according to changes in the ambient temperature. By adjusting the heat exchange area of ​​the delivery pipe, the heat exchange efficiency can be adjusted, which helps to maintain the water temperature at the outlet of the second spout within an appropriate range. This effectively reduces water temperature fluctuations and avoids heating room temperature water when the temperature is low, thereby further improving the energy-saving effect of the water dispenser. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 Sectional view along line AA; Figure 4 This is a schematic diagram of the internal structure of the host of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle; Figure 6 For the present invention Figure 4 Enlarged view of point C in the middle; Figure 7 For the present invention Figure 4 Enlarged view of point D; Figure 8 For the present invention Figure 7 Enlarged diagram of point E in the middle.

[0018] Explanation of reference numerals in the attached figures: 11. Main unit; 12. Pressure relief valve; 13. Drainage tank; 14. Button; 15. Water outlet one; 16. Water outlet two; 17. Heating box; 18. Temperature sensor; 19. Water supply pipe one; 20. Bracket; 21. Water storage tank; 22. Heating element; 23. Preheating box; 24. Pressurization and purification module; 25. Level gauge; 26. Delivery pipe; 27. Air guide pipe; 28. Baffle one; 29. Inlet pipe; 30. Flow-blocking rod; 31. Second baffle plate; 32. First overflow channel; 33. Second overflow channel; 34. Thermal expansion component; 35. Cavity; 36. Air outlet pipe; 37. Recovery pipe; 38. Expansion sleeve; 39. Groove; 40. Sealing plate; 41. Slide plate; 42. Sleeve; 43. Air vent pipe; 44. Water injection pipe; 45. Guide plate; 46. Spring; 47. Mounting groove. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1 to 8 The present invention provides a technical solution: An energy-saving multi-stage heating sterile water dispenser includes a main unit 11 and a heating box 17. A heating tube 22 is provided inside the heating box 17. A water injection pipe 44 is fixedly connected to the outer surface of the lower end of the heating box 17. A water delivery pipe 19 is fixedly connected to the outer surface of the front end of the heating box 17. A flow-blocking component is provided inside the heating box 17. The flow obstruction assembly includes a first baffle plate 28 fixedly connected to the inner surface of the heating box 17. A thermal expansion member 34 is fixedly connected to the lower outer surface of the first baffle plate 28. A second baffle plate 31 is fixedly connected to the lower outer surface of the thermal expansion member 34. Overflow channels 32 and 33 are respectively opened through the outer surfaces of the first baffle plate 28 and the second baffle plate 31. A cavity 35 is provided on the inner side of both the first baffle plate 28 and the second baffle plate 31. The flow obstruction assembly is used to adjust the water flow speed. A bracket 20 is fixedly connected to the inner surface of the main unit 11. The upper outer surface of the bracket 20 is fixedly connected to the heating box 17.

[0021] By adopting the above technical solution, when the water dispenser is in use, an appropriate amount of cold water is first injected into the heating tank 17 from the bottom through the water injection pipe 44, ensuring that the liquid level of the cold water is higher than that of the heating pipe 22. Then, the heating pipe 22 conducts heat continuously by heating. The heating pipe 22 is distributed in a serpentine shape and is located below the baffle plate 31, which can effectively increase the contact surface with the cold water, thereby increasing the heating speed of the cold water. The heating pipe 22 heats the cold water inside the heating tank 17 to reach the boiling point temperature and sterilizes the water flow. Then, water is injected into the heating tank 17 again through the water injection pipe 44. A suitable amount of cold water is injected into the heating tank 17. Since the density of cold water is less than that of hot water, the hot water in the heating tank 17 is on top of the cold water. When the heating tube 22 is working, it will continuously heat the cold water at the bottom of the heating tank 17. After the cold water is heated to the boiling point temperature, cold water is injected into the heating tank 17 again. When some of the hot water in the heating tank 17 is discharged, the water volume in the heating tank 17 decreases. At this time, cold water is injected again and heated to replenish the hot water in the heating tank 17, thereby ensuring the continuous operation of the water dispenser. The heating tank 17 is made of heat insulation material to reduce the loss of heat inside the heating tank 17. To improve the heating efficiency of the heating element 22, a flow-blocking component is installed. The heating box 17 is fixedly installed with the thermal expansion member 34 via the first baffle 28. There are two sets of thermal expansion members 34, which are symmetrically distributed. The outer surface of the thermal expansion member 34 has a U-shaped structure. The first baffle 28 supports the second baffle 31 through the thermal expansion member 34. The overflow channels 1 32 and 2 33 on the surfaces of the first baffle 28 and the second baffle 31 are staggered. After the water is heated, it will flow upward through the first overflow channel 32 and the second overflow channel 33 in sequence. The overflow channel 33 allows for irregular flow of hot water, ensuring thorough mixing and contact of the water inside the heating tank 17. The thermal expansion member 34 is a bimetallic plate structure. When cold water is injected into the heating tank 17 through the water inlet pipe 44, the water temperature around the thermal expansion member 34 is lower, resulting in the maximum bending amplitude of the thermal expansion member 34. Driven by the thermal expansion member 34, the second baffle 31 moves towards the first baffle 28, thereby reducing the distance between the first baffle 28 and the second baffle 31. Because the overflow channel 32 and the overflow channel are staggered, when the first baffle 28... As the distance between the baffle plate 21 and the water flow deflector 22 gradually decreases, the resistance to the upward flow of water increases, thereby reducing the upward velocity of the water flow to a certain extent. This helps to increase the contact time between the water flow and the heating element 22, improving heating efficiency. As the heating element 22 continues to operate, the water temperature around it gradually rises. At this time, the bending amplitude of the thermal expansion member 34 gradually decreases with the increase in temperature. The thermal expansion member 34 pushes the baffle plate 21 downward, thereby increasing the distance between the baffle plate 28 and the baffle plate 21, which helps to reduce the upward flow of water. The upward resistance allows hot water to flow upward quickly. The cavity 35 inside the first baffle 28 and the second baffle 31 can reduce their weight to a certain extent, making the second baffle 31 move more flexibly. By setting the flow obstruction device, the upward speed of the water flow can be adjusted according to the change of water temperature around the heating tube 22, so that the heating tube 22 can quickly heat the cold water. This not only shortens the heating time of the water flow, but also effectively improves the heat utilization efficiency of the heating tube 22, which helps to improve the energy-saving effect of the water dispenser.

[0022] Specifically, such as Figure 4 and Figure 7 As shown, a preheating assembly is provided on the outside of the water injection pipe 44. The preheating assembly includes a preheating box 23 that is fixedly connected to the outer surface of the lower end of the bracket 20. A guide plate 45 is provided on the inner surface of the preheating box 23. The guide plate 45 is spiral and made of elastic material. The lower side of the outer surface of the guide plate 45 is fixedly connected to the inner wall of the heating pipe 22.

[0023] A baffle plate 45 is fitted on the outside of the water injection pipe 44. A gas guide pipe 27 is fixedly connected to the upper side of the outer surface of the preheating box 23. The upper end of the gas guide pipe 27 is fixedly connected to the upper outer surface of the heating box 17. The preheating box 23 is made of heat insulation material. A gas venting pipe 43 is fixedly connected to the lower side of the outer surface of the preheating box 23.

[0024] By adopting the above technical solution, water is heated to its boiling point to produce steam. To fully utilize the heat of the steam, a preheating component is provided. When the preheating component is working, the steam inside the heating box 17 is transported to the preheating box 23 through the air guide pipe 27. The preheating box 23 is equipped with a spiral guide plate 45. The lowermost side of the guide plate 45 is fixedly connected to the inner wall of the preheating box 23, while the upper side of the guide plate 45 slides in contact with the inner wall of the preheating box 23, thereby causing the guide plate 45 to deform to a certain extent. The steam is guided by the guide plate 45. The function is that water vapor flows downwards in a spiral shape inside the preheating box 23, allowing it to fully contact the outer surface of the water injection pipe 44. When water is injected into the heating box 17 through the water injection pipe 44, it comes into contact with the inner wall of the water injection pipe 44. The water injection pipe 44 facilitates heat transfer and preheats the water, ensuring that the water reaches a certain initial temperature before entering the heating box 17. This not only fully utilizes heat and improves energy efficiency but also effectively shortens the heating time of the water inside the heating box 17, thus improving the heating effect.

[0025] Specifically, such as Figure 7 and Figure 8 As shown, the outer surface of the guide plate 45 is provided with a flow-disrupting element, which includes a flow-blocking rod 30 fixedly connected to the upper outer surface of the guide plate 45. The upper outer surface of the flow-blocking rod 30 is embedded with an installation groove 47. A spring 46 is fixedly connected to the inner surface of the installation groove 47. The upper end of the spring 46 is fixedly connected to another set of guide plates 45.

[0026] By adopting the above technical solution, a baffle is provided on the upper side of the guide plate 45. When water vapor flows inside the preheating box 23, the water vapor will come into contact with the outer surface of the baffle rod 30. The baffle rod 30 can change the flow path of the water vapor and prolong the residence time of the water vapor inside the preheating box 23, so that the water vapor has enough time to exchange heat. When the water vapor pressure input into the preheating box 23 fluctuates, since the guide plate 45 is made of elastic material, the water vapor entering the middle of the guide plate 45 will cause the guide plate 45 to deform in the vertical direction. The baffle rod 30 is supported by the spring 46 through the mounting groove 47. The spring 46 provides elastic support to the guide plate 45 on its upper side. Under the elastic support of the spring 46, the deformation between each group of guide plates 45 will be maintained within an appropriate range, so that the water vapor can generate irregular flow inside the preheating box 23, thereby further improving the heat exchange effect of the water vapor.

[0027] Specifically, such as Figure 1 , Figure 3 and Figure 4 As shown, the main unit 11 is provided with a water outlet 15 and a water outlet 16 on its outer side. A delivery pipe 26 is fixedly connected to the lower side of the water injection pipe 44. A three-way valve is provided between the delivery pipe 26 and the water injection pipe 44. The upper end of the delivery pipe 26 is connected to the inside of the water outlet 16. The end of the water delivery pipe 19 away from the heating box 17 is connected to the water outlet 15. A pressurization and purification module 24 is provided on the lower side of the delivery pipe 26. A water inlet pipe 29 is fixedly connected to the outer side of the pressurization and purification module 24. The water inlet pipe 29 extends to the outside of the main unit 11. Control valves are provided on the inner sides of the delivery pipe 26, the water injection pipe 44 and the water delivery pipe 19.

[0028] A drain trough 13 is provided on the front side of the main unit 11. A water storage tank 21 is fixedly connected to the inner surface of the main unit 11. The water storage tank 21 is located below the drain trough 13. A button 14 is provided on the outer surface of the front end of the main unit 11. A temperature sensor 18 and a level gauge 25 are provided inside the heating box 17. The button 14, temperature sensor 18, pressurization and purification module 24 and level gauge 25 are all electrically connected to the water dispenser control system.

[0029] By adopting the above technical solution, when the water dispenser is working, drinking water is injected into the pressurization and purification module 24 through the inlet pipe 29. The pressurization and purification module 24 purifies and filters the drinking water while simultaneously pressurizing the water flow. The pressurized and purified water is then fed into the delivery pipe 26. When the user takes room temperature water, the water flows through the delivery pipe 26 to the second water outlet 16 and is discharged outwards through the second water outlet 16. When the user takes hot water, the cold water inside the delivery pipe 26 is injected into the heating tank 17 through the water injection pipe 44. Hot water inside the rear heating box 17 is delivered to the water outlet 15 through the water supply pipe 19 to achieve a stable supply of hot water. The water outlet 15 and the water outlet 16 are provided with a drain trough 13. Excess water will pass through the drain trough 13 and enter the water storage tank 21 for collection. The control valves provided inside the delivery pipe 26, the water injection pipe 44 and the water supply pipe 19 are used to achieve precise control of the internal pipes of the water dispenser. The temperature sensor 18 and the level gauge 25 inside the heating box 17 can accurately reflect the water volume and temperature inside the heating box 17.

[0030] Specifically, such as Figure 4 and Figure 6 As shown, a constant temperature component is provided on the outside of the conveying pipe 26. The constant temperature component includes a recovery pipe 37 fixedly connected to the outer surface of the conveying pipe 26. A sleeve 42 is fixedly connected to the inner surface of the recovery pipe 37. A slot 39 is opened through the outer surface of the sleeve 42. The end of the air duct 43 away from the preheating box 23 is fixedly connected to the recovery pipe 37.

[0031] An expansion sleeve 38 is fixedly connected to the inner surface of the recovery pipe 37 on the side away from the air intake pipe 43. The expansion sleeve 38 is arranged in a ring shape on the outside of the delivery pipe 26. A sliding plate 41 is fixedly connected to the outer surface of the expansion sleeve 38. A sealing plate 40 is slidably connected to the outer surface of the sleeve 42. The sliding plate 41 extends through to the outside of the slot 39 and is fixedly connected to the sealing plate 40.

[0032] An exhaust pipe 36 is fixedly connected to the outer surface of the recovery pipe 37. The exhaust pipe 36 is located below the air intake pipe 43. The exhaust pipe 36 extends to the outside of the main unit 11 and is fixedly connected to the main unit 11. A pressure relief valve 12 is provided on the outer surface of the exhaust pipe 36.

[0033] By adopting the above technical solution, in order to maintain the water temperature discharged from the outlet 16 within an appropriate range when the ambient temperature is low, a constant temperature component is set up. After the water vapor flows downward inside the preheating box 23, the remaining warm gas is guided to the inside of the recovery pipe 37 through the air intake pipe 43. The sealing plate 40, together with the sliding plate 41, divides the internal space of the recovery pipe 37. The recovery pipe 37 is slidably supported by the sliding plate 41 through the expansion sleeve 38. The sleeve 42 divides the internal space of the recovery pipe 37, and the slot 39 can realize the stable flow of gas inside the sleeve 42. The expansion sleeve 38 is filled with an appropriate amount of thermal expansion gas, and the inner surface of the expansion sleeve 38 is attached to the outside of the delivery pipe 26. When the water temperature inside the delivery pipe 26 is low, the expansion sleeve 38 is in a contracted state. At this time, the distance between the sealing plate 40 and the air intake pipe 43 is kept at its maximum. After the warm gas enters the inside of the recovery pipe 37, the warm gas will pass through the slot 39 on the surface of the sleeve 42 and come into contact with the surface of the delivery pipe 26. There are several sets of slots 39. The water is arranged in a ring array, and the contact area between the surface of the conveying pipe 26 and the warm gas is maximized. The warm gas continuously heats the water inside the conveying pipe 26, so that the water discharged from the second water outlet 16 reaches a suitable drinking temperature. When the ambient temperature of the water dispenser is high, the thermal expansion gas inside the expansion sleeve 38 will expand to a certain extent, thereby increasing the volume of the expansion sleeve 38. The expansion sleeve 38 will push the slide plate 41 and the sealing plate 40 to the side of the air inlet pipe 43, thereby reducing the contact area between the warm gas and the surface of the conveying pipe 26 to a certain extent. This reduces the heating speed of the warm gas on the water inside the conveying pipe 26, and thus keeps the water temperature of the second water outlet 16 within an appropriate range. This effectively reduces water temperature fluctuations and avoids heating room temperature water when the temperature is low, thereby further improving the energy-saving effect of the water dispenser. The gas and water remaining inside the recovery pipe 37 are discharged to the outside of the main unit 11 through the air outlet pipe 36 and the pressure relief valve 12.

[0034] Working Principle: When the water dispenser is working, drinking water is injected into the pressurization and purification module 24 through the inlet pipe 29. The pressurization and purification module 24 purifies and filters the drinking water while simultaneously pressurizing the water flow. Part of the water flow is delivered to the outlet 16 through the delivery pipe 26 and discharged outwards through the outlet 16. The other part of the cold water is injected into the heating tank 17 through the water injection pipe 44. The heating pipe 22 heats the cold water inside the heating tank 17, raising its temperature to boiling point and sterilizing the water flow. After heating, the water flows upwards through the overflow trough 32 and overflow trough 33. When the temperature of the heating pipe 22 is low, the baffle 31 moves towards the baffle 28 under the action of the thermal expansion component 34, thereby reducing the distance between the baffle 28 and the baffle 31. Because the overflow troughs 32 and 33 are staggered, as the distance between the baffle 28 and the baffle 31 gradually decreases, the water flows upwards towards the overflow trough. The resistance to upward flow increases, which reduces the upward speed of the water flow to a certain extent. Water vapor inside the heating box 17 is transported to the preheating box 23 through the air guide pipe 27. The water vapor flows downward in a spiral shape inside the preheating box 23. The water vapor is preheated by heat transmission through the water injection pipe 44, so that the water reaches a certain initial temperature before entering the heating box 17. The water vapor will come into contact with the outer surface of the flow-blocking rod 30. The flow-blocking rod 30 can change the flow path of the water vapor and prolong the residence time of the water vapor inside the preheating box 23. When the water temperature inside the delivery pipe 26 is low, the expansion sleeve 38 is in a contracted state. The warm gas will pass through the groove 39 on the surface of the sleeve 42 and come into contact with the surface of the delivery pipe 26. At this time, the contact area between the surface of the delivery pipe 26 and the warm gas reaches its maximum. The warm gas continuously heats the water inside the delivery pipe 26, so that the water discharged from the outlet 2 16 reaches a suitable drinking temperature.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An energy-saving multi-stage heating sterile water dispenser, comprising a main unit (11) and a heating chamber (17), characterized in that: A heating tube (22) is provided inside the heating box (17), a water injection pipe (44) is fixedly connected to the outer surface of the lower end of the heating box (17), a water supply pipe (19) is fixedly connected to the outer surface of the front end of the heating box (17), and a flow-blocking component is provided inside the heating box (17). The flow-blocking assembly includes a first baffle plate (28) fixedly connected to the inner surface of the heating box (17). A thermal expansion member (34) is fixedly connected to the lower outer surface of the first baffle plate (28). A second baffle plate (31) is fixedly connected to the lower outer surface of the thermal expansion member (34). An overflow groove (32) and an overflow groove (33) are respectively opened through the outer surfaces of the first baffle plate (28) and the second baffle plate (31). A cavity (35) is provided on the inner side of both the first baffle plate (28) and the second baffle plate (31). The flow-blocking assembly is used to adjust the water flow speed.

2. The energy-saving multi-stage heating sterile water dispenser according to claim 1, characterized in that: The thermal expansion components (34) are in two groups and are symmetrically distributed. The outer surface of the thermal expansion components (34) is U-shaped. The overflow groove one (32) and overflow groove two (33) are in several groups and are staggered. The inner surface of the host (11) is fixedly connected to the bracket (20). The upper outer surface of the bracket (20) is fixedly connected to the heating box (17). The heating tube (22) is serpentine and located below the baffle plate two (31).

3. The energy-saving multi-stage heating sterile water dispenser according to claim 2, characterized in that: A preheating assembly is provided on the outside of the water injection pipe (44). The preheating assembly includes a preheating box (23) fixedly connected to the lower outer surface of the bracket (20). A guide plate (45) is provided on the inner surface of the preheating box (23). The guide plate (45) is spiral and made of elastic material. The lower side of the outer surface of the guide plate (45) is fixedly connected to the inner wall of the heating pipe (22).

4. The energy-saving multi-stage heating sterile water dispenser according to claim 3, characterized in that: The guide plate (45) is sleeved on the outside of the water injection pipe (44). A gas guide pipe (27) is fixedly connected to the upper side of the outer surface of the preheating box (23). The upper end of the gas guide pipe (27) is fixedly connected to the upper outer surface of the heating box (17). The preheating box (23) is made of heat insulation material. A gas venting pipe (43) is fixedly connected to the lower side of the outer surface of the preheating box (23).

5. The energy-saving multi-stage heating sterile water dispenser according to claim 4, characterized in that: The outer surface of the guide plate (45) is provided with a flow-disrupting element. The flow-disrupting element includes a flow-blocking rod (30) fixedly connected to the upper outer surface of the guide plate (45). The upper outer surface of the flow-blocking rod (30) is embedded with an installation groove (47). A spring (46) is fixedly connected to the inner surface of the installation groove (47). The upper end of the spring (46) is fixedly connected to another set of guide plates (45). The number of the flow-disrupting elements is several sets and they are distributed in a parallel array.

6. The energy-saving multi-stage heating sterile water dispenser according to claim 5, characterized in that: The main unit (11) is provided with a water outlet 1 (15) and a water outlet 2 (16) on the outside. The water injection pipe (44) is fixedly connected to a delivery pipe (26) on the lower side. A three-way valve is provided between the delivery pipe (26) and the water injection pipe (44). The upper end of the delivery pipe (26) is connected to the inside of the water outlet 2 (16). The end of the water delivery pipe 1 (19) away from the heating box (17) is connected to the water outlet 1 (15). A pressurization and purification module (24) is provided on the lower side of the delivery pipe (26). A water inlet pipe (29) is fixedly connected to the outside of the pressurization and purification module (24). The water inlet pipe (29) extends through to the outside of the main unit (11). Control valves are provided on the inside of the delivery pipe (26), the water injection pipe (44) and the water delivery pipe 1 (19).

7. An energy-saving multi-stage heating sterile water dispenser according to claim 6, characterized in that: A constant temperature component is provided on the outside of the conveying pipe (26). The constant temperature component includes a recovery pipe (37) fixedly connected to the outer surface of the conveying pipe (26). A sleeve (42) is fixedly connected to the inner surface of the recovery pipe (37). A slot (39) is opened through the outer surface of the sleeve (42). The number of slots (39) is several groups and they are arranged in a ring array. The end of the air venting pipe (43) away from the preheating box (23) is fixedly connected to the recovery pipe (37).

8. An energy-saving multi-stage heating sterile water dispenser according to claim 7, characterized in that: An expansion sleeve (38) is fixedly connected to the inner surface of the recovery pipe (37) away from the air intake pipe (43). The expansion sleeve (38) is arranged in a ring shape on the outside of the delivery pipe (26). A sliding plate (41) is fixedly connected to the outer surface of the expansion sleeve (38). A sealing plate (40) is slidably connected to the outer surface of the sleeve (42). The sliding plate (41) extends through to the outside of the slot (39) and is fixedly connected to the sealing plate (40).

9. An energy-saving multi-stage heating aseptic water dispenser according to claim 8, characterized in that: The outer surface of the recovery pipe (37) is fixedly connected to the air outlet pipe (36), the air outlet pipe (36) is located below the air intake pipe (43), the air outlet pipe (36) passes through to the outside of the main unit (11) and is fixedly connected to the main unit (11), and a pressure relief valve (12) is provided on the outer surface of the air outlet pipe (36).

10. An energy-saving multi-stage heating aseptic water dispenser according to claim 9, characterized in that: The main unit (11) is provided with a drain trough (13) on the front side. A water storage tank (21) is fixedly connected to the inner surface of the main unit (11). The water storage tank (21) is located below the drain trough (13). A button (14) is provided on the outer surface of the front end of the main unit (11). A temperature sensor (18) and a level gauge (25) are provided inside the heating box (17). The button (14), temperature sensor (18), pressurization and purification module (24) and level gauge (25) are all electrically connected to the water dispenser control system.

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