Water purifier

Abstract

The invention discloses a water purifier, and relates to the technical field of water purification equipment, the water purifier comprises a shell, a hot tank and a diaphragm pump; the hot tank and the diaphragm pump are both arranged in the shell, and the diaphragm pump is communicated with the hot tank and used for conveying hot water in the hot tank to a hot water outlet of the water purifier; the diaphragm pump comprises a motor assembly and a pump body. An umbrella-shaped piece, an eccentric seat and a valve seat are arranged in the pump body; the eccentric seat is connected with a rotating shaft of the motor assembly, one end of the umbrella-shaped piece is in transmission connection with the eccentric seat, and the other end of the umbrella-shaped piece is in transmission connection with the valve seat. The valve seat sinks towards one side of the eccentric seat to form a plurality of pressure cavities, and the outer walls of the pressure cavities are integrally connected with piston rods and fixing buckles. The fixing buckle is installed on the umbrella-shaped piece, and the diameter of the end, connected with the outer wall of the pressure cavity, of the piston rod is 1 / 2-2 / 3 of the diameter of the bottom face of the pressure cavity. According to the technical scheme provided by the invention, the flexibility of the structural layout of the water purifier can be improved, the structural complexity is reduced, the cost is reduced, and efficient and stable operation of the diaphragm pump is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification equipment, and particularly to a water purifier. Background Art

[0002] For existing water purifiers with functions of purifying and heating water, they mainly use a centrifugal pump to discharge the water in the hot water tank for users. Since the centrifugal pump itself has no self-priming ability, it is required to be placed at the bottom of the hot water tank to ensure that the water entering the centrifugal pump has a certain pressure and prevent the phenomenon of air extraction. However, this installation method restricts the layout flexibility of the internal structure of the equipment to a certain extent. Secondly, the centrifugal pump has a high rotational speed and is sensitive to pressure, which results in poor flow accuracy in the purification and heating system. To ensure the flow accuracy, it is necessary to additionally increase a heat-resistant flowmeter to feedback the flow information and adjust the rotational speed of the water pump in real time, which not only increases the cost of the equipment but also makes the system more complex. In addition, the hot water tank must be provided with a relatively large exhaust port to ensure the connection between the hot water tank and the atmosphere, avoid the generation of vacuum in the tank after the water is discharged, and prevent the water pressure at the inlet of the water pump from being too low and causing air extraction. However, the existence of the relatively large exhaust port greatly reduces the heat preservation performance of the hot water tank, making the equipment consume more energy in maintaining the water temperature.

[0003] Therefore, the present application designs a water purifier using a diaphragm pump, and optimizes the structure of the valve seat part of the diaphragm pump to ensure the efficient and stable operation of the diaphragm pump in the water purifier. Summary of the Invention

[0004] The main object of the present invention is to propose a water purifier, aiming to solve at least one problem raised in the background art.

[0005] To achieve the above object, the water purifier proposed by the present invention includes a housing, a hot water tank and a diaphragm pump; the hot water tank is arranged in the housing; the diaphragm pump is arranged in the housing, and the diaphragm pump is communicated with the hot water tank to send the hot water in the hot water tank to the hot water outlet of the water purifier.

[0006] Wherein, the diaphragm pump includes a motor assembly and a pump body; an umbrella-shaped part, an eccentric seat and a valve seat are arranged in the pump body; the eccentric seat is connected with the rotating shaft of the motor assembly, one end of the umbrella-shaped part is in transmission connection with the eccentric seat, and the other end of the umbrella-shaped part is in transmission connection with the valve seat; the valve seat is recessed towards the eccentric seat side to form a plurality of pressure chambers, and a piston rod and a fixing buckle are integrally connected to the outer wall of the pressure chamber; the fixing buckle is installed on the umbrella-shaped part, and the diameter of the end of the piston rod connected to the outer wall of the pressure chamber is 1 / 2 - 2 / 3 of the bottom diameter of the pressure chamber.

[0007] In one embodiment, the pump body includes a pump cover, a connecting plate, a mounting plate, and an end cover assembled in sequence. The end cover abuts against the motor assembly. The valve seat is installed on the mounting plate, and the mounting plate has a plurality of through holes for the piston rod to pass through.

[0008] In one embodiment, the piston rod, the pressure chamber, and the through holes are coaxially arranged; and the diameters of the three increase in sequence.

[0009] In one embodiment, the diameter of the through hole shows an increasing trend in the direction extending towards the eccentric seat; and / or, the diameter of the pressure chamber shows a decreasing trend in the direction extending towards the eccentric seat; and / or, the diameter of the piston rod shows a decreasing trend in the direction extending towards the eccentric seat.

[0010] In one embodiment, the valve seat has a plurality of positioning openings, and the mounting plate has positioning bosses adapted to the positioning openings; and / or, the valve seat further includes a plurality of sealing convex rings located outside the openings of the pressure chamber.

[0011] In one embodiment, the diaphragm pump further includes a connecting rod. The eccentric seat has an inclined first mounting hole, and the umbrella-shaped member has a second mounting hole coaxial with its central axis. The two ends of the connecting rod are respectively inserted into the first mounting hole and the second mounting hole. The included angle between the connecting rod and the rotating shaft of the motor assembly is α, and 15° ≤ α ≤ 25°.

[0012] In one embodiment, the umbrella-shaped member includes a central plate body and a plurality of extending arms wound around the outside of the central plate body. Each extending arm is provided with an insertion hole for the fixing buckle to pass through. The extending arms incline from the surface of the central plate body towards the eccentric shaft side. The inclined angle of the extending arm is β, and 15° ≤ β ≤ 25°.

[0013] In one embodiment, an isolated water inlet chamber and a water outlet chamber are formed between the pump cover and the connecting plate, and the water inlet chamber is communicated with the water outlet chamber through the pressure chamber.

[0014] In one embodiment, at the position of the connecting plate corresponding to the water inlet chamber, there is a first water passing hole communicating the water inlet chamber and the pressure chamber. An umbrella valve is installed in the water inlet chamber, and the umbrella valve is used to open and close the first water passing hole.

[0015] In one embodiment, at the position of the connecting plate corresponding to the water outlet chamber, there is a second water passing hole communicating the water outlet chamber and the pressure chamber. A water outlet valve plate is installed in the water outlet chamber, and the water outlet valve plate is used to open and close the second water passing hole.

[0016] The technical solution of the present invention sends the hot water in the hot water tank to its hot water outlet through a diaphragm pump for users to use. Due to the improved self-priming ability of the diaphragm pump, its position can be set arbitrarily, not limited to below the hot water tank, which improves the flexibility of the layout design of the water purifier and can reduce the layout difficulty of the water purifier. The diaphragm pump is a positive displacement pump, and its flow accuracy can reach within 10%. Compared with the centrifugal pump with an accuracy of within 20%, this application can eliminate the flow meter, greatly reduce the system cost, reduce the complexity of the system, and improve the competitiveness of the product. Due to the improved self-priming ability of the diaphragm pump, its exhaust hole can be reduced by more than 20% without worrying about cavitation problems. The reduction of the exhaust hole can greatly improve the heat preservation performance of the hot water tank. Furthermore, this application can ensure the efficient and stable operation of the diaphragm pump through the optimization of the valve seat structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0018] Figure 1 It is a schematic structural diagram of an embodiment of a water purifier provided by the present invention;

[0019] Figure 2 It is a partial structural diagram of an embodiment of a water purifier provided by the present invention;

[0020] Figure 3 It is a schematic structural diagram of an embodiment of the diaphragm pump of the water purifier provided by the present invention;

[0021] Figure 4 It is an exploded structural diagram of an embodiment of the diaphragm pump of the water purifier provided by the present invention;

[0022] Figure 5 It is a sectional structural diagram of an embodiment of the diaphragm pump of the water purifier provided by the present invention;

[0023] Figure 6 It is another sectional structural diagram of an embodiment of the diaphragm pump of the water purifier provided by the present invention;

[0024] Figure 7 It is a schematic structural diagram of an embodiment of the connecting plate of the water purifier provided by the present invention;

[0025] Figure 8 It is a schematic structural diagram of an embodiment of the valve seat of the water purifier provided by the present invention;

[0026] Figure 9Structural schematic diagram of an umbrella-shaped part of a water purifier provided by the present invention from a perspective of an embodiment;

[0027] Figure 10 Structural schematic diagram of an umbrella-shaped part of a water purifier provided by the present invention from another perspective of an embodiment.

[0028] Explanation of reference numerals in the drawings:

[0029] 1. Water purifier; 1a. Hot water outlet; 10. Housing; 20. Thermal tank; 30. Diaphragm pump; 31. Motor assembly; 311. Rotating shaft; 32. Pump body; 321. Umbrella-shaped part; 321a. Second mounting hole; 3211. Central plate body; 3212. Extension arm; 3212a. Insertion hole; 322. Eccentric seat; 3221. First mounting hole; 323. Valve seat; 3231. Flat plate; 3231a. Positioning opening; 3231b. Sealing convex ring; 3232. Telescopic body; 3233. Pressure chamber; 3234. Piston rod; 3235. Fixed buckle; 324. Pump cover; 3241. Water inlet pipe; 3242. Water outlet pipe; 325. Connecting plate; 3251. First water passing hole; 3252. Second water passing hole; 3253. Umbrella valve mounting hole; 325a. Water inlet chamber; 325b. Water outlet chamber; 326. Mounting plate; 3261. Through hole; 3262. Positioning boss; 327. End cover; 328. Umbrella valve; 329. Water outlet valve plate; 33. Connecting rod.

[0030] The realization of the object, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0033] In addition, if the embodiments of the present invention involve descriptions such as "first" and "second", the descriptions of "first", "second", etc. are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] Existing water purifiers with the functions of purifying and heating water mainly use a centrifugal water pump to discharge the water in the hot water tank for users. Since the centrifugal water pump itself has no self-priming ability, it is required to be placed at the bottom of the hot water tank to ensure that the water entering the centrifugal water pump has a certain pressure and prevent air extraction. However, this installation method restricts the layout flexibility of the internal structure of the device to a certain extent. Secondly, the centrifugal water pump has a high rotational speed and is sensitive to pressure, which results in poor flow accuracy in the purification and heating system. To ensure the flow accuracy, it is necessary to additionally increase a heat-resistant flowmeter to feedback the flow information and adjust the rotational speed of the water pump in real time, which not only increases the cost of the device but also makes the system more complex. In addition, a relatively large exhaust port must be provided for the hot water tank to ensure the connection between the hot water tank and the atmosphere, avoid the generation of vacuum in the tank after the water is discharged, and prevent the water inlet pressure of the water extraction pump from being too low and causing air extraction. However, the existence of a relatively large exhaust port greatly reduces the heat preservation performance of the hot water tank, resulting in more energy consumption for the device to maintain the water temperature.

[0035] Therefore, the present invention proposes a water purifier using a diaphragm pump, and the valve seat part of the diaphragm pump is structurally optimized to ensure the efficient and stable operation of the diaphragm pump in the water purifier.

[0036] Please refer to Figure 1 、 Figure 2 and Figure 8As shown in the figure, in an embodiment of the present invention, the water purifier 1 includes a housing 10, a hot water tank 20, and a diaphragm pump 30. The hot water tank 20 and the diaphragm pump 30 are both disposed inside the housing 10. The diaphragm pump 30 is connected to the hot water tank 20 and is used to send the hot water in the hot water tank 20 to the hot water outlet 1a of the water purifier 1. The diaphragm pump 30 includes a motor assembly 31 and a pump body 32. An umbrella-shaped member 321, an eccentric seat 322, and a valve seat 323 are disposed inside the pump body 32. The eccentric seat 322 is connected to the rotating shaft 311 of the motor assembly 31. One end of the umbrella-shaped member 321 is drivingly connected to the eccentric seat 322, and the other end of the umbrella-shaped member 321 is drivingly connected to the valve seat 323. The valve seat 323 is recessed toward the eccentric seat 322 to form a plurality of pressure chambers 3233. The outer wall of the pressure chamber 3233 is integrally connected with a piston rod 3234 and a fixing buckle 3235. The fixing buckle 3235 is installed on the umbrella-shaped member 321. The diameter of the end of the piston rod 3234 connected to the outer wall of the pressure chamber 3233 is 1 / 2 - 2 / 3 of the bottom diameter of the pressure chamber 3233.

[0037] Specifically, the water purifier 1 of the present application is used to heat the external water and supply it to users for use. The water purifier 1 includes a housing 10, a hot water tank 20, and a diaphragm pump 30 disposed inside the housing 10. The water purifier 1 has a hot water outlet 1a. The hot water tank 20 and the diaphragm pump 30 are in communication with each other. The hot water tank 20 is used to store hot water, and the diaphragm pump 30 is used to pump out the water in the hot water tank 20 and transport it to the hot water outlet 1a of the water purifier 1 through a pipeline for users to use. It can be understood that a heating component is provided at the bottom of the hot water tank 20 for heating the water in the hot water tank 20.

[0038] The diaphragm pump 30 includes a motor assembly 31 and a pump body 32 that are drivingly connected. Inside the pump body 32, an umbrella-shaped member 321, an eccentric seat 322, and a valve seat 323 are provided. The rotating shaft 311 of the motor assembly 31 penetrates into the pump body 32, and the eccentric seat 322 is installed on the rotating shaft 311. The rotation of the rotating shaft 311 can drive the eccentric seat 322 to rotate. The umbrella-shaped member 321 plays a driving role. It is arranged between the eccentric seat 322 and the valve seat 323. The upper end of the umbrella-shaped member 321 is drivingly connected to the eccentric seat 322, and the lower end of the umbrella-shaped member 321 is drivingly connected to the eccentric seat 322. The rotation of the eccentric seat 322 can drive the umbrella-shaped member 321 to swing, thereby driving the valve seat 323 to perform a suction action. The valve seat 323 is recessed toward the eccentric seat 322 to form a plurality of pressure chambers 3233. The outer wall of the pressure chamber 3233 is connected to a piston rod 3234 and a fixed buckle 3235 on the side facing the motor assembly 31. The piston rod 3234, the fixed buckle 3235, and the outer wall of the pressure chamber 3233 are integrally formed. The fixed buckle 3235 is installed on the umbrella-shaped member 321 so that when the umbrella-shaped member 321 swings, it can drive the fixed buckle 3235 to move, and further drive the piston rod 3234 to compress and extend the pressure chamber 3233 to change the volume of the pressure chamber 3233, and then realize the pumping and discharging actions to pump out the hot water in the hot water tank 20 for the user to use. The upper end of the piston rod 3234 is connected to the outer wall of the pressure chamber 3233, and the diameter of the upper end of the piston rod 3234 is 1 / 2 - 2 / 3 of the diameter of the bottom wall of the pressure chamber 3233.

[0039] This application uses the diaphragm pump 30. Compared with the traditional water purifier 1 using a centrifugal pump, the layout of this application is more flexible, solving the installation position limitation problem in the traditional water purifier due to the lack of self-priming ability of the centrifugal pump. The diaphragm pump 30 has self-priming ability, so it does not need to be placed below the hot water tank 20 and can be installed at any position, thus increasing the flexibility and variability of the layout of the water purifier 1. This not only simplifies the installation process but also reduces the requirement of the water purifier 1 for the installation space, and can greatly reduce the layout difficulty of the water purifier 1 to enhance the competitiveness of the water purifier 1. The diaphragm pump 30 is a positive displacement pump, and its flow accuracy can reach within 10%. Compared with the accuracy of the centrifugal pump within 20%, this application can cancel the flow meter, greatly reducing the cost of the water purifier 1, reducing the complexity of the water purifier 1, and enhancing the competitiveness of the product. The diaphragm pump 30 can change the flow pressure through simple adjustment to adapt to different scenarios and needs, improving the flexibility of the system and the user experience. The working principle of the diaphragm pump 30 makes the noise and vibration generated during its operation smaller, which is particularly important for household or commercial water purifiers. Due to the improvement of the self-priming ability of the diaphragm pump 30, its exhaust hole can be reduced by more than 20% without worrying about cavitation problems. The reduction of the exhaust hole can greatly improve the heat preservation performance of the hot water tank 20.

[0040] Furthermore, in the present application, the diameter of the upper end of the piston rod 3234 is set to be 1 / 2 - 2 / 3 of the diameter of the bottom wall of the pressure chamber 3233. The size of the upper end of the piston rod 3234 is set to be relatively large, but not overly large, which can improve the utilization rate of the pressure chamber 3233 and thus enhance the efficiency of the pump. When the diameter of the upper end of the piston rod 3234 is less than 1 / 2 of the diameter of the bottom wall of the pressure chamber 3233, the piston rod 3234 cannot provide sufficient support for the pressure chamber 3233, which will cause unnecessary deformation of the pressure chamber 3233 during operation, thereby affecting the performance of the pump. Especially when dealing with hot water, the outer wall of the pressure chamber 3233 will become soft. If the diameter of the piston rod 3234 is too small, it cannot effectively support the outer wall of the pressure chamber 3233, resulting in a significant attenuation of the flow rate of the diaphragm pump 30. This is because the softened rubber valve seat 323 is more easily deformed under pressure, thereby reducing the displacement of the diaphragm pump 30. When the diameter of the upper end of the piston rod 3234 is greater than 2 / 3 of the bottom wall of the pressure chamber 3233, it may increase friction and wear, thus reducing the efficiency and service life of the diaphragm pump 30. Through reasonable design of the size of the piston rod 3234, the present application can ensure the efficient and reliable operation of the diaphragm pump 30.

[0041] It should be noted that the valve seat 323 is generally made of soft materials such as rubber or silica gel, which has good elasticity and sealing performance and can play a role in isolating and transporting liquids during the operation of the pump.

[0042] Please refer to Figures 3 - 6 As shown, in an optional embodiment, the pump body 32 includes a pump cover 324, a connecting plate 325, a mounting plate 326, and an end cover 327 assembled in sequence. The end cover 327 abuts against the motor assembly 31, the valve seat 323 is installed on the mounting plate 326, and the mounting plate 326 has a plurality of through holes 3261 for the piston rod 3234 to pass through.

[0043] Specifically, the pump body 32 includes a pump cover 324, a connecting plate 325, a mounting plate 326, and an end cover 327 assembled from top to bottom in sequence. The pump cover 324 is located at the uppermost end of the pump body 32, which is used to enclose the internal space of the pump, prevent liquid leakage, and protect the moving parts inside the pump. The end cover 327 is located at the lowermost end of the pump body 32, on the side close to the motor assembly 31, and the end cover 327 is installed on the motor assembly 31. The end cover 327 and the motor assembly 31 can be fastened by bolts. The mounting plate 326 is arranged above the end cover 327, and the connecting plate 325 is arranged between the mounting plate 326 and the pump cover 324. The valve seat 323 is installed on the mounting plate 326, and the piston rod 3234 of the valve seat 323 passes through the through hole 3261, and the outer wall of the pressure chamber 3233 also passes through the through hole 3261. The piston rod 3234 extends towards the eccentric seat 322 so that the fixing buckle 3235 can be conveniently assembled with the eccentric seat 322.

[0044] Please refer toFigure 8 As shown, in an alternative embodiment, the piston rod 3234, the pressure chamber 3233, and the through hole 3261 are coaxially arranged, and their diameters increase in sequence.

[0045] Specifically, in this embodiment, the valve seat 323 includes a flat plate 3231 and a plurality of telescopic bodies 3232. The plurality of telescopic bodies 3232 are integrally connected to the flat plate 3231. The number of telescopic bodies 3232 is 5. A pressure chamber 3233 is formed on each telescopic body 3232. The pressure chamber 3233 is located at the upper end of each telescopic body 3232. The piston rod 3234 and the fixed buckle 3235 are successively connected to the lower end of the outer wall of the pressure chamber 3233. The piston rod 3234, the pressure chamber 3233, and the mounting plate 326 on each telescopic body 3232 are coaxially arranged with the through hole 3261 corresponding to the piston rod 3234, and the diameters of the piston rod 3234, the pressure chamber 3233, and the through hole 3261 increase in sequence. Coaxially arranging the piston rod 3234, the pressure chamber 3233, and the through hole 3261 means that their center lines are on the same straight line. This design can ensure that the piston rod 3234 can smoothly pass through the through hole 3261 and the pressure chamber 3233 during reciprocating motion without skewing or jamming. The coaxial arrangement can also reduce friction and wear, improving the operating efficiency and lifespan of the pump. The diameter of the through hole 3261 is the largest, which is to ensure that the piston rod 3234 can easily pass through and will not have excessive friction with the side wall of the through hole 3261. The larger through hole 3261 can also provide sufficient space for liquid flow, reducing the flow resistance and improving the flow rate and efficiency of the pump. The diameter of the pressure chamber 3233 is larger than that of the piston rod 3234, which is to accommodate more liquid and provide sufficient space for the piston rod 3234 to reciprocate. The diameter of the piston rod 3234 is set to be the smallest, which is to ensure that it can smoothly drive the outer wall of the pressure chamber 3233 to reciprocate in the through hole 3261. The smaller diameter can reduce friction and wear and extend the service life of the piston rod 3234.

[0046] Please refer to Figure 5 and Figure 6 As shown, in an alternative embodiment, the diameter of the through hole 3261 shows an increasing trend in the extending direction towards the eccentric seat 322; and / or, the diameter of the pressure chamber 3233 shows a decreasing trend in the extending direction towards the eccentric seat 322; and / or, the diameter of the piston rod 3234 shows a decreasing trend in the extending direction towards the eccentric seat 322.

[0047] Specifically, the diameter of the through hole 3261 tends to increase in the extending direction towards the eccentric seat 322, that is, the diameter of the through hole 3261 is larger at the end close to the eccentric seat 322 and smaller at the end far from the eccentric seat 322. This design can help reduce the friction between the piston rod 3234 and the side wall of the through hole 3261 during the reciprocating motion. Especially when the piston rod 3234 is close to the eccentric seat 322, the larger diameter of the through hole 3261 can provide more space, reduce the contact area between the outer wall of the pressure chamber 3233 and the side wall of the through hole 3261, thereby reducing friction and wear.

[0048] The diameter of the pressure chamber 3233 tends to decrease in the extending direction towards the eccentric seat 322, that is, the diameter of the pressure chamber 3233 is smaller at the end close to the eccentric seat 322 and larger at the end far from the eccentric seat 322. This setting helps optimize the liquid flow path, making the liquid flow more smoothly in the pressure chamber 3233. At the same time, the smaller diameter of the pressure chamber 3233 near the eccentric seat 322 is more conducive to increasing the liquid pressure and improving the suction and discharge capacity of the pump.

[0049] The diameter of the piston rod 3234 tends to decrease in the extending direction towards the eccentric seat 322, that is, the diameter of the piston rod 3234 is smaller at the end close to the eccentric seat 322 and larger at the end far from the eccentric seat 322. This design can help reduce the inertial force of the piston rod 3234 during the reciprocating motion. Especially during high-speed motion, the smaller diameter of the piston rod 3234 can reduce its mass, thereby reducing the impact of the inertial force on the pump performance.

[0050] By optimizing the settings of the through hole, the pressure chamber 3233, and the diameter of the piston rod 3234 in this application, the efficient and stable operation of the pump can be achieved, and the performance of the pump can be improved.

[0051] Please refer to Figure 8 As shown, in an alternative embodiment, the valve seat 323 further has a plurality of positioning openings 3231a, and the mounting plate 326 has positioning bosses 3262 adapted to the positioning openings 3231a. And / or, the valve seat 323 further includes a plurality of sealing ridges 3231b located outside the openings of the pressure chamber 3233.

[0052] Specifically, a plurality of positioning openings 3231a are further provided on the flat plate 3231 of the valve seat 323. The positioning openings 3231a are located on the outer side of the flat plate 3231, and the plurality of positioning openings 3231a are evenly spaced around the axis of the valve seat 323. The flat plate 3231 of the valve seat 323 is installed between the mounting plate 326 and the connecting plate 325. A plurality of positioning bosses 3262 are provided on the mounting plate 326, and the positioning bosses 3262 correspond to the positioning openings 3231a one by one. Through the cooperation of the positioning openings 3231a and the positioning bosses 3262, the precise position of the valve seat 323 during installation can be ensured, and the installation error can be reduced.

[0053] A plurality of sealing ridges 3231b are further provided on the flat plate 3231 of the valve seat 323. The sealing ridges 3231b are located outside the opening of the pressure chamber 3233. The sealing ridges 3231b are used to improve the sealing performance of the pressure chamber 3233, prevent liquid from flowing out through the gap between the flat plate 3231 and the connecting plate 325. The sealing ridges 3231b are in close contact with the surface of the connecting plate 325 to form a sealing ring to prevent the liquid in the pressure chamber 3233 from leaking.

[0054] Please refer to Figure 5 As shown, in an alternative embodiment, the diaphragm pump 30 further includes a connecting rod 33. The eccentric seat 322 has an inclined first mounting hole 3221, and the umbrella-shaped member 321 has a second mounting hole 321a coaxial with its central axis. Two ends of the connecting rod 33 are respectively inserted into the first mounting hole 3221 and the second mounting hole 321a. The included angle between the connecting rod 33 and the rotating shaft 311 of the motor assembly 31 is α, and 15° ≤ α ≤ 25°.

[0055] Specifically, the connecting rod 33 serves as a transmission component, which is used to transmit the rotational motion of the rotating shaft 311 of the motor assembly 31 to the umbrella-shaped member 321, and then drive the piston on the valve seat 323 to perform reciprocating motion. The eccentric seat 322 has an inclined first mounting hole 3221, and the umbrella-shaped member 321 has a second mounting hole 321a. The second mounting hole 321a is coaxially arranged with the central axis of the umbrella-shaped member 321. Two ends of the connecting rod 33 are respectively inserted into the first mounting hole 3221 and the second mounting hole 321a. The umbrella-shaped member 321 is connected to the eccentric seat 322 through the connecting rod 33 to ensure that the umbrella-shaped member 321 swings under the drive of the connecting rod 33. By reasonably setting the range of the included angle α in this application, it is ensured that the connecting rod 33 can effectively convert the rotational motion of the motor into the reciprocating motion of the umbrella-shaped member 321, while ensuring the stability and efficiency of the transmission. When the included angle α is less than 15°, the transmission efficiency is low. When the included angle is greater than 25°, the complexity and wear of the transmission increase. By setting the included angle α in the range of 15° - 25° in this application, efficient, stable and reliable transmission and pumping functions can be achieved.

[0056] Please refer toFigure 9 and Figure 10 As shown in Figure 10 , in an alternative embodiment, the umbrella-shaped member 321 includes a central plate body 3211 and a plurality of extension arms 3212 wound around the outside of the central plate body 3211. Each extension arm 3212 is provided with an insertion hole 3212a for inserting the valve seat 323. The extension arm 3212 is inclined from the surface of the central plate body 3211 toward the eccentric shaft side; the inclination angle of the extension arm 3212 is β, and 15° ≤ β ≤ 25°.

[0057] Specifically, the umbrella-shaped member 321 of the present application includes an integrally formed central plate body 3211 and a plurality of extension arms 3212. The plurality of extension arms 3212 are evenly arranged around the axis of the central plate body 3211, and the number of extension arms 3212 is the same as the number of fixed buckles 3235. An insertion hole 3212a is formed in each extension arm 3212, and the fixed buckles 3235 of the valve seat 323 are inserted into the insertion holes 3212a one by one, so that the umbrella-shaped member 321 can drive the fixed buckles 3235 and the piston rod 3234 to reciprocate up and down when swinging, so as to compress and extend the pressure chamber 3233. In the present application, the extension arm 3212 is arranged to have an included angle with the surface of the central plate body 3211. This design not only increases the structural strength of the umbrella-shaped member 321, but also helps to optimize the flow state of the fluid in the pressure chamber 3233 and can reduce the fluid resistance. The included angle between the extension arm 3212 and the surface of the central plate body 3211 is the inclination angle β of the extension arm 3212, and β is in the range of 15° - 25°. When the value of β is below 15°, the advantages brought by the inclined design cannot be exerted; when the value of β is above 25°, the overall strength and stability of the umbrella-shaped member 321 will be affected. Through the optimized design of the umbrella-shaped member 321 of the present application, not only the stability of the structure and the efficiency of fluid control are improved, but also the best balance between performance and reliability is achieved by precisely controlling the inclination angle of the extension arm 3212.

[0058] Please refer to Figure 5 、 Figure 6 and Figure 7 As shown in Figure 7 , in an alternative embodiment, an isolated water inlet chamber 325a and a water outlet chamber 325b are formed between the pump cover 324 and the connecting plate 325, and the water inlet chamber 325a is communicated with the water outlet chamber 325b through the pressure chamber 3233.

[0059] Specifically, a water inlet pipe 3241 and a water outlet pipe 3242 are provided on the pump cover 324. The pump cover 324 cooperates with the connecting plate 325 to form a separated water outlet cavity 325b and a water inlet cavity 325a. The water inlet cavity 325a is communicated with the water inlet pipe 3241, and the water outlet cavity 325b is communicated with the water outlet pipe 3242. The pressure cavity 3233 is arranged below the water inlet cavity 325a and the water outlet cavity 325b, and the water inlet cavity 325a is communicated with the water outlet cavity 325b through the pressure cavity 3233. In this embodiment, the water outlet cavity 325b is a cylindrical cavity, which is located at the middle position of the connecting plate 325, and the water inlet cavity 325a is an annular cavity, which is located outside the water outlet cavity 325b. During operation, the water outlet of the hot water tank 20 is communicated with the water inlet pipe 3241 on the pump cover 324. The hot water in the hot water tank 20 enters the water inlet cavity 325a through the water inlet pipe 3241. The motor assembly 31 rotates to drive the piston to reciprocate, so as to realize the suction and pressure actions through the pressure cavity 3233. When the pressure cavity 3233 suctions, the liquid in the water inlet cavity 325a will be sucked into the pressure cavity 3233; when the pressure cavity 3233 pressures, the liquid in the pressure cavity 3233 will be pressed into the water outlet cavity 325b, and then sent out through the water outlet pipe 3242 to the hot water outlet 1a of the water purifier 1 for the user to use.

[0060] The position of the connecting plate 325 corresponding to the water inlet cavity 325a has a first water passing hole 3251 for communicating the water inlet cavity 325a and the pressure cavity 3233. A canopy valve 328 is installed in the water inlet cavity 325a, and the canopy valve 328 is used to open and close the first water passing hole 3251. The position of the connecting plate 325 corresponding to the water outlet cavity 325b has a second water passing hole 3252 for communicating the water outlet cavity 325b and the pressure cavity 3233. A water outlet valve plate 329 is installed in the water outlet cavity 325b, and the water outlet valve plate 329 is used to open and close the second water passing hole 3252.

[0061] Specifically, on one side of the connecting plate 325 located in the water inlet chamber 325a, there is an installation boss. A first water passing hole 3251 and a valve installation hole 3253 are formed on the installation boss. The valve installation hole 3253 is used for installing the valve 328. The first water passing hole 3251 communicates the water inlet chamber 325a and the pressure chamber 3233. The valve surface of the valve 328 covers the first water passing hole 3251, and the valve surface of the valve 328 is located in the pressure chamber 3233. When the pressure chamber 3233 is pressed, the valve surface of the valve 328 is pressed to close the first water passing hole 3251; when the pressure chamber 3233 sucks, the valve surface of the valve 328 is sucked open, so that the first water passing hole 3251 is opened, and the liquid in the water inlet chamber 325a can enter the water outlet chamber 325b. At the position of the connecting plate 325 corresponding to the water outlet chamber 325b, a second water outlet hole is provided. A water outlet valve plate 329 is installed in the water outlet chamber 325b, and the water outlet valve plate 329 covers the second water outlet hole. When the pressure chamber 3233 sucks, the water outlet valve plate 329 is adsorbed to block the second water outlet hole. At this time, the valve surface of the valve 328 is sucked open to suck the water in the water inlet chamber 325a into the pressure chamber 3233; when the pressure chamber 3233 is pressed, the water outlet valve plate 329 is pressed open, and the valve surface of the valve 328 is pressed, so that the liquid in the pressure chamber 3233 is pressed into the water outlet chamber 325b.

[0062] The above are only exemplary embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A water purifier, characterized in that: include: case; A hot tank, the hot tank being disposed in the housing; A diaphragm pump, the diaphragm pump is disposed in the housing, the diaphragm pump is connected to the hot tank, and is used to deliver the hot water in the hot tank to the hot water outlet of the water purifier; In which, the diaphragm pump includes a motor assembly and a pump body; an umbrella-shaped part, an eccentric seat and a valve seat are arranged in the pump body; the eccentric seat is connected to the rotating shaft of the motor assembly, one end of the umbrella-shaped part is transmission-connected to the eccentric seat, and the other end of the umbrella-shaped part is transmission-connected to the valve seat; the valve seat is recessed toward one side of the eccentric seat to form a plurality of pressure chambers, and the outer wall of the pressure chamber is integrally connected with a piston rod and a fixing buckle; the fixing buckle is installed on the umbrella-shaped part, and the diameter of one end of the piston rod connected to the outer wall of the pressure chamber is 1 / 2-2 / 3 of the bottom diameter of the pressure chamber.

2. The water purifier according to claim 1, characterized in that The pump body comprises a pump cover, a connecting plate, a mounting plate and an end cover which are assembled in sequence, and the end cover abuts against the motor assembly; the valve seat is mounted on the mounting plate, and the mounting plate has a plurality of through holes for the piston rod to pass through.

3. The water purifier according to claim 2, characterized in that: The piston rod, the pressure chamber and the through hole are coaxially arranged, and their diameters increase sequentially.

4. The water purifier according to claim 2, characterized in that: The diameter of the through hole tends to increase in the direction extending toward the eccentric seat; and / or, the diameter of the pressure chamber tends to decrease in the direction extending toward the eccentric seat; and / or, the diameter of the piston rod tends to decrease in the direction extending toward the eccentric seat.

5. The water purifier according to claim 2, characterized in that: The valve seat is provided with a plurality of positioning openings, and the mounting plate is provided with positioning bosses adapted to the positioning openings; and / or, the valve seat further comprises a plurality of sealing convex rings located outside the opening of the pressure chamber.

6. The water purifier according to claim 1, characterized in that: The diaphragm pump also includes a connecting rod, the eccentric seat has an inclined first mounting hole, and the umbrella-shaped member has a second mounting hole coaxial with its central axis; the two ends of the connecting rod are respectively inserted into the first mounting hole and the second mounting hole; the angle between the connecting rod and the rotating shaft of the motor assembly is α, 15°≦α≦25°.

7. The water purifier according to claim 1, characterized in that The umbrella-shaped member includes a central plate body and a plurality of extension arms wound around the central plate body, each of the extension arms is provided with an insertion hole for the fixing buckle to pass through, and the extension arm is inclined from the surface of the central plate body toward one side of the eccentric shaft; the inclination angle of the extension arm is β, 15°≦β≦25°.

8. The water purifier according to claim 2, characterized in that: An isolated water inlet chamber and a water outlet chamber are formed between the pump cover and the connecting plate, and the water inlet chamber is connected with the water outlet chamber through the pressure chamber.

9. The water purifier according to claim 8, characterized in that The connection plate has a first water hole communicating with the water inlet chamber and the pressure chamber at a position corresponding to the water inlet chamber. An umbrella valve is installed in the water inlet chamber, and the umbrella valve is used to open and close the first water hole.

10. The water purifier according to claim 9, characterized in that The connection plate has a second water hole connecting the water outlet chamber and the pressure chamber at a position corresponding to the water outlet chamber. A water outlet valve is installed in the water outlet chamber, and the water outlet valve is used to open and close the second water hole.

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