Instant water heating device

Abstract

The utility model relates to an instant heating type water heating device which comprises a comprehensive water tank, an instant heating type heater and a water pump and is characterized in that the comprehensive water tank is divided into a water storage area and a water-vapor separation area, a water bottle inserting opening and an air inlet are formed in the positions, corresponding to the water storage area, of the comprehensive water tank, and the water bottle inserting opening and the air inlet are communicated with the water storage area; a water outlet and an overflow port are formed in the water storage area, the overflow port is higher than the water outlet, and the height of the overflow port is the same as that of the water bottle inserting port; the water bottle inserting opening is formed and communicated with the water storage area, and water in the water bottle can be automatically supplemented in the water storage area. When the water level of the water storage area drops, water in the water bottle automatically flows into the water storage area to maintain the water level, an additional sensor or an electric control device is not needed, the structure is simplified, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to an instantaneous water heating device. Background Technology

[0002] Instantaneous water heating devices are used to rapidly heat water to meet user needs and are widely used in household appliances, commercial equipment, and industrial applications. Currently, instantaneous heating equipment on the market generally suffers from the following technical problems:

[0003] Traditional instantaneous heating equipment lacks an effective water level control mechanism, making it prone to dry burning when water supply is insufficient or interrupted. This not only affects the equipment's lifespan but can also pose safety hazards. To solve this problem, components such as water level sensors and control circuits are usually added, but this increases the complexity and cost of the equipment.

[0004] During instant heating, the boiling of water produces a large amount of steam. If the water-vapor separation design is not properly implemented, steam and hot water will mix and flow out, affecting the user experience.

[0005] To ensure the efficient operation of instantaneous heating equipment, existing designs typically rely on multiple electronic and mechanical components (such as water level sensors, control modules, pump control systems, etc.), which not only increases energy consumption but also raises maintenance difficulty and production costs.

[0006] In summary, existing instantaneous water heating devices have problems such as the risk of dry burning, incomplete water-vapor separation, poor water supply stability, and insufficient energy consumption and cost control. Utility Model Content

[0007] The purpose of this invention is to provide an instant water heating device that reduces costs by utilizing the principle of water level balance.

[0008] The purpose of this utility model is achieved as follows:

[0009] An instantaneous water heating device includes a comprehensive water tank, an instantaneous heater, and a water pump, characterized in that: the comprehensive water tank is divided into a water storage area and a water vapor separation area, and the comprehensive water tank has a water bottle inlet and an air inlet at the location corresponding to the water storage area, and the water bottle inlet and the air inlet are connected to the water storage area.

[0010] The water storage area has a drain outlet and an overflow outlet. The overflow outlet is higher than the drain outlet, and the overflow outlet is at the same height as the water bottle connector.

[0011] The water-vapor separation area is equipped with a water spray nozzle, a hot water outlet, and a steam outlet;

[0012] The inlet of the water pump is connected to the drain outlet, the outlet of the water pump is connected to the inlet of the instantaneous heater, the outlet of the instantaneous heater is connected to the spray nozzle, and the height of the spray nozzle is higher than the height of the overflow outlet.

[0013] It also includes a connecting pipe, one end of which is connected to an overflow port, and the other end of which is connected to an instant heater, the outlet height of which is lower than the overflow port height.

[0014] By setting up a water bottle connector and connecting it to the water storage area, the storage area can be automatically replenished using water from the bottle. When the water level in the storage area drops, water from the bottle automatically flows into the storage area to maintain the water level. This eliminates the need for additional sensors or electronic control devices, simplifying the structure and reducing costs.

[0015] The overflow port is connected to the instantaneous heater via a connecting pipe, and the outlet height of the instantaneous heater is designed to be lower than the overflow port height, forming a natural water level balance mechanism. During operation, the instantaneous heater maintains sufficient internal water, preventing dry burning due to water shortage and significantly improving equipment safety and lifespan.

[0016] The water vapor separation area is equipped with spray nozzles, hot water outlets, and steam outlets to effectively distinguish the discharge paths of hot water and steam, ensuring the stability of water quality and temperature at the hot water outlet, while preventing steam from interfering with the hot water flow and improving the user experience.

[0017] The height of the spray nozzle is higher than that of the overflow outlet. The instantaneous heater heats the water to boiling, and only the boiling water can splash out of the spray nozzle, ensuring that the water entering the water vapor separation area is fully heated hot water after boiling, thus ensuring drinking safety.

[0018] It adopts a simple physical structure with an overflow port, connecting pipe, and water bottle socket, and realizes automatic water replenishment, water shortage protection and water level balancing functions. It does not require complex electronic control components, has a reliable structure, low cost, and is easy to maintain, making it suitable for a wide range of applications.

[0019] After designing an air inlet in the water storage area, air can be introduced during drainage to prevent negative pressure from forming in the water storage area, thus avoiding the possibility that negative pressure may cause poor water flow or blockage.

[0020] The objective of this utility model can also be achieved by the following technical measures:

[0021] Furthermore, the connecting pipe is a T-shaped pipe, with one end of the T-shaped pipe connected to the outlet of the water pump, the other end of the T-shaped pipe connected to the inlet of the instant heater, and the other end of the T-shaped pipe connected to the overflow port.

[0022] The three-way pipe connects the water pump outlet, the instant heater inlet, and the overflow port, optimizing the water circulation path. This allows water in the storage area to be delivered to the instant heater more efficiently, while the overflow port enables water to flow back, forming a continuous and stable water circulation system, thereby improving equipment operating efficiency.

[0023] With its three-way pipe design, the water from the pump outlet can not only directly enter the instantaneous heater but also flow back to the storage area through the overflow port. This connection method allows for quick adjustment of the water level balance between the storage area and the instantaneous heater, ensuring that there is always enough water inside the instantaneous heater, avoiding dry burning, and guaranteeing the safety and lifespan of the equipment.

[0024] Furthermore, it also includes a water shortage protection device, which includes a magnetic levitation box and a normally closed micro switch. The magnetic levitation box has a first magnet inside and is set in the water storage area to float with the water level.

[0025] The instantaneous heater and the normally closed micro switch are connected in series. The control part of the normally closed micro switch is equipped with a second magnet. The control part of the normally closed micro switch is located below the bottom of the water storage area.

[0026] When the water storage area is short of water, the magnetic levitation box moves down with the water level until the first magnet enters the sensing range of the second magnet. The first magnet and the second magnet generate a repulsive force against each other. The repulsive force drives the control part of the normally closed micro switch to operate, and the normally closed micro switch disconnects the power supply to the instant heater.

[0027] The water shortage protection device uses a linkage design between a magnetic levitation box and a normally closed micro switch. When the water storage area is short of water, the magnetic levitation box descends, triggering the normally closed micro switch to cut off the power, quickly disconnecting the power supply to the instant heater. This effectively prevents the heater from burning dry under waterless conditions, thus ensuring the safety of equipment operation.

[0028] The device utilizes the principle of mutual repulsion between magnets to detect water shortage. It eliminates the need for complex electronic sensors or control systems. The entire device has a simple structure and reliable operation, avoiding the possibility of electronic equipment failing due to moisture or circuit malfunctions.

[0029] The magnetic levitation box floats precisely with changes in water level, reflecting the water level in the storage area in real time. When the water level drops to a critical value, the magnetic levitation box quickly triggers a microswitch to disconnect the power supply, ensuring the safe operation of the instantaneous heater.

[0030] The water shortage protection device effectively prevents the instant heater from operating in a waterless state, thereby reducing the wear and tear on the heating element under high temperature conditions, lowering the equipment failure rate, extending service life, and saving on later maintenance costs.

[0031] This design uses mechanical principles instead of electronic sensors, resulting in simpler and easier-to-manufacture components, thus reducing product costs. At the same time, the mechanical device is more durable, reducing repair costs due to damage to electronic equipment.

[0032] Furthermore, it also includes a main switch, which is connected in parallel with the water pump and the instantaneous heater. The main switch controls the start and stop of the water pump, and the main switch and the normally closed micro switch jointly control the start and stop of the instantaneous heater.

[0033] The water pump continues to run after the water level in the storage tank is depleted, completely draining the water from the tank to prevent the magnetic control valve at the bottom of the storage tank from being sucked up due to residual water, thus further improving the reliability of the equipment.

[0034] When the equipment is started up next time, the water pump draws water from the water tank into the instant heater. The instant heater has a certain amount of water reserved in it, which can prevent the heating element from working in a completely dry state, thereby reducing the risk of dry burning, protecting the heating element, and extending the equipment's life.

[0035] Intelligent linkage is achieved through a fully mechanical design, avoiding the use of electronic sensors and reducing production and maintenance costs.

[0036] Furthermore, the magnetic levitation box includes a box body with an open bottom and a hollow interior and the first magnet. The surface of the box body is spaced apart with magnet receiving cavities. The first magnet is disposed in the magnet receiving cavity. The bottom of the side wall of the box body has an exhaust vent that communicates with the inner cavity of the box body.

[0037] The magnetic levitation box has a positioning socket, and the water storage area is provided with a guide column. The guide column is inserted into the positioning socket, and the magnetic levitation box is placed in the water storage area. The magnetic levitation box slides along the length of the guide column.

[0038] The magnetic levitation box works with the guide column through the positioning socket, allowing the magnetic levitation box to slide smoothly along the length of the guide column in the water storage area. This avoids the magnetic levitation box shaking, jamming, or deviating due to water flow fluctuations or tilting, ensuring the sensitivity and accuracy of floating.

[0039] The magnetic levitation box has an exhaust vent at the bottom of its side wall. When the box is close to the bottom of the water storage area, the air inside the box can be discharged in time through the exhaust vent, avoiding the situation where negative pressure is formed and the air is adsorbed at the bottom due to the inability to discharge. This improves the free floating ability and reliability of the magnetic levitation box.

[0040] The magnetic levitation box achieves vertical sliding through the guidance of guide columns, preventing the box from tilting or tipping over due to water flow impact or magnetic force, thus ensuring the stability of the float and the accuracy of the detection.

[0041] The magnet housing design fixes the first magnet inside the box, preventing the magnet from falling off or shifting due to shaking. This ensures that the sensing range of the magnet and the normally closed micro switch are always matched, improving the accuracy and durability of the water shortage protection device.

[0042] The box features a hollow, open-bottom design, combined with venting openings and guide pillars, which significantly reduces the need for complex parts, simplifies the overall structure, and lowers manufacturing and maintenance costs.

[0043] The vent prevents the box from adhering to the bottom of the water storage area, ensuring that the magnetic levitation box can move smoothly down when the water level drops, triggering the normally closed micro switch to effectively achieve the water shortage protection function and avoid equipment failure.

[0044] The positioning socket and guide column work together to allow the magnetic levitation box to adapt to various water storage area shapes and sizes. The constraint effect of the guide column reduces abnormal movements of the magnetic levitation box caused by water flow impact or vibration, ensuring the safety and accuracy of the device operation.

[0045] Furthermore, the box is a hollow plastic box with an open bottom.

[0046] The use of plastic material significantly reduces the weight and production cost of the box, while enhancing corrosion resistance. The hollow structure design provides sufficient buoyancy, ensuring that the magnetic levitation box can float sensitively in water and accurately reflect changes in water level. The open bottom design improves the reliability of floating.

[0047] Furthermore, the drain outlet is located within the projection range of the magnetic levitation box.

[0048] The drain outlet is designed within the projection range of the magnetic levitation box to ensure that the water pump can effectively remove the water from the bottom of the magnetic levitation box, avoid water residue at the bottom of the magnetic levitation box forming water pressure adsorption, and ensure that the magnetic levitation box can float sensitively with changes in water level.

[0049] Through a well-designed location, water accumulated at the bottom of the magnetic levitation box is drained first, preventing localized water stagnation in the water storage area and ensuring the pumping efficiency and operational stability of the device.

[0050] The water pump removes the water from the bottom of the magnetic levitation box, effectively preventing water accumulation from interfering with the normal floating trajectory of the magnetic levitation box, ensuring that the magnetic levitation box is always in a precise water level feedback state, and improving the operating accuracy of the device.

[0051] Furthermore, a guide slope is provided between the water spray nozzle and the hot water outlet in the water vapor separation area, and the guide slope is inclined from the water spray nozzle towards the hot water outlet.

[0052] The inclined design of the guide ramp optimizes the water flow path, allowing the boiling water splashed from the nozzle to flow smoothly to the hot water outlet.

[0053] The smooth flow of water effectively reduces the stagnation time of boiling water in the water-steam separation zone, improving hot water discharge efficiency and steam separation effect.

[0054] The sloping design reduces energy waste caused by water flow turbulence, further improving the operational stability of the water vapor separation zone.

[0055] Furthermore, the instantaneous heater has a wastewater outlet.

[0056] Timely discharge of sediment through the wastewater outlet reduces the risk of scale buildup inside the instantaneous heater and extends the equipment's service life.

[0057] Furthermore, it also includes an air intake pipe, which is connected to an air intake port.

[0058] With an air inlet designed into the water storage area, air can be introduced during drainage to prevent negative pressure from forming in the water storage area. This avoids the possibility that negative pressure may cause poor water flow or blockage. The presence of the air inlet ensures smooth water flow and improves the pumping efficiency of the water pump. Moreover, the air inlet is connected to the bottom air inlet through the air inlet pipe, avoiding the situation of the air inlet being exposed in the traditional design. This makes the overall appearance of the instant water heating device simpler and more beautiful, meeting the aesthetic requirements of modern products.

[0059] The air inlet is not directly exposed to prevent accidental contact by users or obstruction of the air inlet, further reducing the probability of equipment malfunction caused by poor air intake and improving safety during use.

[0060] The beneficial effects of this utility model are as follows:

[0061] This invention relates to a comprehensive water tank that utilizes a unique water bottle connector to automatically replenish and stop water supply. When a water bottle is plugged into the connector, water flows into the storage area until the water level in the storage area rises to the same height as the connector, forming a water seal. At this point, the water level in the bottle cannot drop further due to pressure equilibrium, and the water supply automatically stops. When the water level in the storage area drops due to equipment operation, water from the bottle automatically flows into the storage area to replenish the water supply, ensuring continuous water supply. This eliminates the need for an additional electronically controlled water level sensor, achieving automated and low-cost water supply control.

[0062] In this invention, the instant heater is connected to the overflow port of the water storage area via a connecting pipe. The difference between the height of the overflow port and the outlet height of the instant heater is used to create a balanced water level. Water in the storage area is pumped into the instant heater by a water pump. When the water level in the instant heater reaches or exceeds the height of the overflow port, the excess water flows back to the storage area through the connecting pipe. Since the outlet of the instant heater is lower than the height of the overflow port, this design ensures that there is always enough water in the instant heater, preventing dry burning due to lack of water. The balanced water level mechanism does not rely on electronic sensors, but adjusts the water circulation through a simple physical height difference, which is both stable and reliable, and avoids the safety hazard of dry burning.

[0063] In this invention, the instant heater stops operating, but the water pump continues to work normally, drawing residual water from the storage area into the instant heater for storage. This design ensures that there is always water remaining in the instant heater, allowing for direct water supply upon the next startup, thus avoiding the problem of dry burning during initial startup.

[0064] This invention features a hollow, open-bottomed box, allowing the inner cavity to directly contact the water in the storage area, reducing the box's weight and increasing its buoyancy. This design enables the magnetic levitation box to easily float with the rise and fall of the water level in the storage area, accurately reflecting the current water level.

[0065] This invention features a vent on the side wall of the container, allowing it to connect the internal cavity with the outside air. When the bottom of the container touches the bottom of the water storage area, water may enter the internal cavity, creating a sealed space. In this situation, the pressure difference between the inside and outside of the container may cause it to adhere tightly to the bottom of the water storage area due to an adsorption effect, losing its floating function. Because the container in this patent has a vent, it provides an airflow channel, balancing the pressure inside and outside the container and preventing adsorption caused by water seal effect or pressure difference, ensuring that the container can float normally with the water level.

[0066] This invention features a drain outlet within the projection range of the magnetic levitation box. This ensures that when the water storage area is short of water, the water accumulation at the bottom of the magnetic levitation box is quickly reduced, preventing water accumulation below the box and allowing it to move rapidly downwards. This triggers the normally closed microswitch, preventing delays or misjudgments. Furthermore, the drain outlet reduces water accumulation at the bottom of the magnetic levitation box, thereby reducing the adsorption force caused by the water seal effect. Combined with the venting opening on the side wall of the box, this more effectively prevents the magnetic levitation box from adhering to the bottom of the water storage area, ensuring its free movement. Attached Figure Description

[0067] Figure 1 This is a schematic diagram of an instantaneous water heating device.

[0068] Figure 2 This is a schematic diagram of the water circulation in an instantaneous water heating device.

[0069] Figure 3 This is a schematic diagram of water level balance and water vapor separation in an instantaneous water heating device.

[0070] Figure 4 This is a schematic diagram of the water shortage protection for an instant water heating device.

[0071] Figure 5 This is a schematic diagram of the water shortage protection (water shortage state) of an instant water heating device.

[0072] Figure 6 This is a cross-sectional view of an instantaneous water heating device.

[0073] Figure 7 This is an exploded view of an instantaneous water heating device.

[0074] Figure 8 This is a schematic diagram of the magnetic levitation box of an instantaneous water heating device.

[0075] Figure 9 This is another schematic diagram of the magnetic levitation box of an instant water heating device.

[0076] Figure 10 This is a cross-sectional view of the magnetic levitation box of an instantaneous water heating device.

[0077] Figure 11 This is a circuit diagram of an instant water heating device. Detailed Implementation

[0078] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0079] Implementation examples, in conjunction with Figures 1 to 11 As shown, an instant water heating device includes a comprehensive water tank 1, an instant heater 2, and a water pump 3. The comprehensive water tank 1 is divided into a water storage area 4 and a water vapor separation area 5. The comprehensive water tank 1 has a water bottle plug 41 and an air inlet 45 at the position corresponding to the water storage area 4. The water bottle plug 41 and the air inlet 45 are connected to the water storage area 4.

[0080] The water storage area 4 has a drain outlet 42 and an overflow outlet 43. The height of the overflow outlet 43 is higher than the height of the drain outlet 42. The height of the overflow outlet 43 is the same as the height of the water bottle insertion interface 41.

[0081] The water vapor separation zone 5 has a water spray nozzle 51, a hot water outlet 52 and a steam outlet 53.

[0082] The inlet of the water pump 3 is connected to the drain outlet 42, the outlet of the water pump 3 is connected to the inlet of the instant heater 2, the outlet of the instant heater 2 is connected to the spray nozzle 51, and the height of the spray nozzle 51 is higher than the height of the overflow outlet 43.

[0083] It also includes a connecting pipe, one end of which is connected to the overflow port 43, and the other end of which is connected to the instant heater 2. The outlet height of the instant heater 2 is lower than the height of the overflow port 43.

[0084] Furthermore, the connecting pipe is a three-way pipe 6, one end of which is connected to the outlet of the water pump 3, the other end of which is connected to the inlet of the instant heater 2, and the other end of which is connected to the overflow port 43.

[0085] Furthermore, it also includes a water shortage protection device, which includes a magnetic levitation box 7 and a normally closed micro switch 8. The magnetic levitation box 7 has a first magnet 71 inside and is set in the water storage area 4 to float with the water level.

[0086] The instant heater 2 and the normally closed micro switch 8 are connected in series. The control part of the normally closed micro switch 8 is provided with a second magnet 81. The control part of the normally closed micro switch 8 is located below the bottom of the water storage area 4.

[0087] When the water storage area 4 is short of water, the magnetic levitation box 7 moves down with the water level until the first magnet 71 enters the sensing range of the second magnet 81. The first magnet 71 and the second magnet 81 generate a repulsive force that pushes the control part of the normally closed micro switch 8 to act, and the normally closed micro switch 8 disconnects the power supply to the instant heater 2.

[0088] Furthermore, it also includes a main switch, which is connected in parallel with the water pump 3 and the instant heater 2. The main switch controls the start and stop of the water pump 3, and the main switch and the normally closed micro switch 8 jointly control the start and stop of the instant heater 2.

[0089] Furthermore, the magnetic levitation box 7 includes a box body 72 with an open bottom and a hollow interior and the first magnet 71. The surface of the box body 72 is spaced apart by magnet receiving cavities 721. The first magnet 71 is disposed in the magnet receiving cavity 721. The bottom of the side wall of the box body 72 has an exhaust vent 722 that communicates with the inner cavity of the box body 72.

[0090] The magnetic levitation box 7 has a positioning socket 73, and the water storage area 4 is provided with a guide post 44. The guide post 44 is inserted into the positioning socket 73, and the magnetic levitation box 7 is placed in the water storage area 4. The magnetic levitation box 7 slides along the length direction of the guide post 44.

[0091] Furthermore, the box 72 is a hollow plastic box 72 with an open bottom.

[0092] Furthermore, the drain outlet 42 is located within the projection range of the magnetic levitation box 7.

[0093] Furthermore, a guide slope 54 is provided between the water nozzle 51 and the hot water outlet 52 in the water vapor separation area 5, and the guide slope 54 is inclined from the water nozzle 51 toward the hot water outlet 52.

[0094] Furthermore, the instantaneous heater 2 has a wastewater outlet 21.

[0095] Furthermore, it also includes an air intake pipe, which is connected to an air intake port.

[0096] The integrated water tank 1 achieves automatic water replenishment and supply interruption functions via a unique water bottle connector 41. When a water bottle is plugged into connector 41, water flows into storage area 4 until the water level in storage area 4 rises to the same height as connector 41, forming a water seal. At this point, the water level in the bottle cannot drop further due to pressure balance, and water supply automatically stops. When the water level in storage area 4 drops due to equipment operation, water from the bottle automatically flows into storage area 4 to replenish the water supply, ensuring continuous water supply without the need for an additional electronically controlled water level sensor, achieving automated and low-cost water supply control.

[0097] The instantaneous heater 2 is connected to the overflow port 43 of the water storage area 4 through a connecting pipe, and the difference between the height of the overflow port 43 and the outlet height of the instantaneous heater 2 is used to form a balanced water level.

[0098] Water in storage area 4 is pumped into instant heater 2 by water pump 3. When the water level in instant heater 2 reaches or exceeds the height of overflow port 43, the excess water flows back to storage area 4 through connecting pipe.

[0099] Since the outlet of the instant heater 2 is lower than the overflow port 43, this design ensures that there is always enough water in the instant heater 2 and that it will not dry out due to lack of water.

[0100] The water level balancing mechanism does not rely on electronic sensors. It adjusts the water flow circulation through a simple physical height difference, which is both stable and reliable, and avoids the safety hazards of dry burning.

[0101] The magnetic levitation box 7 contains a first magnet 71, which floats as the water level in the water storage area 4 rises or falls. When the water level is too low, the magnetic levitation box 7 moves downward, and the first magnet 71 moves closer to the second magnet 81 located in the control unit of the normally closed micro switch 8.

[0102] The first magnet 71 and the second magnet 81 repel each other, causing the control unit of the normally closed micro switch 8 to operate and disconnect the power supply to the instant heater 2.

[0103] With this design, the equipment automatically stops operating when the water storage area 4 is short of water, avoiding the risk of dry burning due to lack of water. At the same time, it eliminates the need for complex electronic sensors, reducing costs and failure rates.

[0104] Furthermore, even when the instantaneous heater 2 stops operating, the water pump 3 continues to work normally, pumping the remaining water from the water storage area 4 into the instantaneous heater 2 for storage. This design ensures that there is always water remaining in the instantaneous heater 2, allowing for direct water supply upon the next startup, thus avoiding the problem of dry burning during the initial startup.

[0105] The main switch is connected in series in the circuit and serves as a key control element for starting the equipment. Users can start the equipment simply by manually closing the main switch, making operation easy.

[0106] The normally closed micro switch 8 is linked with the magnetic levitation box 7. When the water storage area 4 is short of water, the normally closed micro switch 8 disconnects the instant heater 2 and stops the instant heater 2 from running.

[0107] The fully mechanical design eliminates the need for a complex electronic control system. The instant heater 2 is started, operated, and protected against water shortage by a normally closed micro switch 8 controlled by a water level float. All equipment is powered on and off by a main switch, which greatly improves the reliability and stability of the equipment while reducing manufacturing and maintenance costs.

[0108] The box 72 is hollow and open at the bottom, allowing the inner cavity of the box 72 to directly contact the water in the water storage area 4 through the bottom, reducing the weight of the box 72 and increasing its buoyancy. This design enables the magnetic levitation box 7 to easily float with the rise and fall of the water level in the water storage area 4, accurately reflecting the current water level status.

[0109] The side wall of the box 72 has an exhaust vent 722, which can connect the inner cavity of the box 72 with the outside air.

[0110] When the bottom of the box 72 contacts the bottom of the water storage area 4, water may enter the inner cavity of the box 72, forming a sealed space. In this case, the pressure difference between the inside and outside of the box 72 may cause the box 72 to adhere tightly to the bottom of the water storage area 4 due to the adsorption effect, losing its floating function. Since the box 72 of this patent has an exhaust vent 722, the exhaust vent 722 provides an air circulation channel, balances the pressure inside and outside the box 72, avoids the adsorption phenomenon caused by the water seal effect or pressure difference, and ensures that the box 72 can float normally with the water level.

[0111] The drain outlet 42 is within the projection range of the magnetic levitation box 7, which can ensure that when the water storage area 4 is short of water, the water accumulation in the bottom area of ​​the magnetic levitation box 7 is quickly reduced, and water accumulation below the magnetic levitation box 7 is avoided, so that the magnetic levitation box 7 moves down quickly and triggers the normally closed micro switch 8 to act, avoiding delay or misjudgment.

[0112] Moreover, the presence of the drain outlet 42 reduces the amount of water accumulation in the bottom area of ​​the magnetic levitation box 7, thereby reducing the adsorption force caused by the water seal effect.

[0113] The ventilation opening 722 on the side wall of the box 72 can more effectively prevent the magnetic levitation box 7 from adhering to the bottom of the water storage area 4, ensuring its free movement.

Claims

1. An instantaneous water heating device, characterized in that: It includes a comprehensive water tank (1), an instant heater (2) and a water pump (3). The comprehensive water tank (1) is divided into a water storage area (4) and a water vapor separation area (5). The comprehensive water tank (1) has a water bottle plug (41) and an air inlet (45) at the position corresponding to the water storage area (4). The water bottle plug (41) and the air inlet (45) are connected to the water storage area (4). The water storage area (4) has a drain outlet (42) and an overflow outlet (43). The overflow outlet (43) is higher than the drain outlet (42), and the overflow outlet (43) is the same height as the water bottle connector (41). The water vapor separation zone (5) is provided with a water spray nozzle (51), a hot water outlet (52) and a steam outlet (53); The inlet of the water pump (3) is connected to the drain outlet (42), the outlet of the water pump (3) is connected to the inlet of the instant heater (2), the outlet of the instant heater (2) is connected to the spray nozzle (51), and the height of the spray nozzle (51) is higher than the height of the overflow outlet (43). It also includes a connecting pipe, one end of which is connected to an overflow port (43), and the other end of which is connected to an instant heater (2), the outlet height of which is lower than the height of the overflow port (43).

2. The instantaneous water heating device according to claim 1, characterized in that: The connecting pipe is a three-way pipe (6). One end of the three-way pipe (6) is connected to the outlet of the water pump (3), the other end of the three-way pipe (6) is connected to the inlet of the instant heater (2), and the other end of the three-way pipe (6) is connected to the overflow port (43).

3. The instantaneous water heating device according to claim 1, characterized in that: It also includes a water shortage protection device, which includes a magnetic levitation box (7) and a normally closed micro switch (8). The magnetic levitation box (7) has a first magnet (71) inside it. The magnetic levitation box (7) is set in the water storage area (4) and floats with the water level. The instant heater (2) and the normally closed micro switch (8) are connected in series. The control part of the normally closed micro switch (8) is provided with a second magnet (81). The control part of the normally closed micro switch (8) is located below the bottom of the water storage area (4). When the water storage area (4) is short of water, the magnetic levitation box (7) moves down with the water level until the first magnet (71) enters the sensing range of the second magnet (81). The first magnet (71) and the second magnet (81) generate a repulsive force against each other. The repulsive force pushes the control part of the normally closed micro switch (8) to operate, and the normally closed micro switch (8) disconnects the power supply to the instant heater (2).

4. The instantaneous water heating device according to claim 3, characterized in that: It also includes a main switch, the main switch, the water pump (3) and the instant heater (2) are connected in parallel, the main switch controls the start and stop of the water pump (3), and the main switch and the normally closed micro switch (8) jointly control the start and stop of the instant heater (2).

5. The instantaneous water heating device according to claim 3, characterized in that: The magnetic levitation box (7) includes a box body (72) with an open bottom and a hollow interior and a first magnet (71). The surface of the box body (72) is spaced apart with magnet receiving cavities (721). The first magnet (71) is disposed in the magnet receiving cavity (721). The bottom of the side wall of the box body (72) has an exhaust vent (722) that communicates with the inner cavity of the box body (72). The magnetic levitation box (7) has a positioning socket (73), and the water storage area (4) is provided with a guide post (44). The guide post (44) is inserted into the positioning socket (73), and the magnetic levitation box (7) is placed in the water storage area (4). The magnetic levitation box (7) slides along the length direction of the guide post (44).

6. The instantaneous water heating device according to claim 5, characterized in that: The box (72) is a hollow plastic box (72) with an open bottom.

7. The instantaneous water heating device according to claim 1, characterized in that: The drain outlet (42) is located within the projection range of the magnetic levitation box (7).

8. The instantaneous water heating device according to claim 1, characterized in that: A guide slope (54) is provided between the water nozzle (51) and the hot water outlet (52) of the water vapor separation area (5). The guide slope (54) is inclined from the water nozzle (51) toward the hot water outlet (52).

9. The instantaneous water heating device according to claim 1, characterized in that: The instantaneous heater (2) has a wastewater outlet (21).

10. The instantaneous water heating device according to claim 1, characterized in that: It also includes an air intake pipe, which is connected to an air intake port.

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