Diaphragm pump and water treatment equipment
By using brushless motor and inverter technology in the diaphragm pump, the mains electricity is inverted to the required voltage and current type, which solves the problem of excessive volume of the diaphragm pump, and achieves the reduction of the volume and efficiency of the equipment.
Patent Information
- Application Number
- CN202421632471.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-10
AI Technical Summary
The existing diaphragm pump is too large, resulting in an increased space occupancy of the water purifier and requires two power adapters to supply power, increasing the complexity and volume of the equipment.
A diaphragm pump is designed, using brushless motor and inverter technology, and the inverter is used to invert the mains electricity into the type of voltage and current required for electric actuators. The larger adapter is eliminated and the overall volume of the diaphragm pump is reduced.
The diaphragm pump is reduced in size, reducing the complexity and space occupancy of the equipment, while improving the efficiency and reliability of the equipment.
Smart Images
Figure CN222924589U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water treatment, and particularly relates to a diaphragm pump and a water treatment device. Background Art
[0002] At present, the vast majority of the booster pumps used in water purifiers are DC brushed diaphragm pumps. It is necessary for the whole water purifier to be equipped with a 12 / 24 / 36V DC adapter to convert the mains power into direct current to supply power to the pump, and its supply current is relatively large. At the same time, the solenoid valves in the water purifier, such as check valves and reflux flushing valves (generally 24V), also need an adapter to convert the mains power into direct current to supply power to them, and their supply current is relatively small. Especially when the voltages required by the two types of electrical components, the pump and the solenoid valve, are different, the water purifier needs two power adapters to supply power, which greatly occupies the volume of the water purifier. Content of the Utility Model
[0003] The main object of the utility model is to provide a diaphragm pump and a water treatment device, aiming at solving the problem of the too large volume of the existing diaphragm pump.
[0004] To achieve the above object, the diaphragm pump proposed by the utility model comprises:
[0005] A main body, comprising a housing and an electric actuator. The housing forms an installation cavity with an opening at one end, and the electric actuator is arranged in the housing; and,
[0006] A circuit board assembly, arranged in the housing and electrically connected to the electric actuator for controlling the operation of the electric actuator. The circuit board assembly comprises a circuit board and at least one inverter integrally arranged on the circuit board. The inverter is electrically connected to the electric actuator.
[0007] In an embodiment, the electric actuator comprises a motor assembly;
[0008] The inverter comprises a first inverter electrically connected to the motor assembly.
[0009] In an embodiment, the motor assembly comprises a motor housing and a motor arranged in the motor housing. The motor housing is sleeved on the opening end of the housing;
[0010] A first wire passing hole is arranged at the bottom of the motor housing, and the motor is connected to the first inverter through a first lead wire passing through the first wire passing hole.
[0011] In an embodiment, the electric actuator comprises a solenoid valve;
[0012] The inverter comprises a second inverter electrically connected to the solenoid valve.
[0013] In one embodiment, a second wire passing hole is formed in the housing;
[0014] A sealing sleeve is provided at the second wire passing hole, and the sealing sleeve is sleeved around the periphery of an external wire connected to the circuit board assembly.
[0015] In one embodiment, a first connection hole is formed in the circuit board assembly, a second connection hole is provided in the housing, and the circuit board assembly is fixedly connected to the housing through a connecting member sequentially passing through the first connection hole and the second connection hole.
[0016] In one embodiment, the housing is provided with a drain hole communicating with the installation cavity.
[0017] In one embodiment, the drain hole is provided on the peripheral side wall of the housing.
[0018] In one embodiment, the motor assembly includes a motor housing and a stator assembly. The motor housing is a plastic-sealed motor housing, and the stator assembly is embedded in the plastic-sealed motor housing.
[0019] The present utility model further provides a water treatment device, including a diaphragm pump, and the diaphragm pump includes:
[0020] A main body, including a housing and an electric actuator. The housing forms an installation cavity with an opening at one end, and the electric actuator is arranged in the housing; and,
[0021] A circuit board assembly, arranged in the housing and electrically connected to the electric actuator for controlling the operation of the electric actuator. The circuit board assembly includes a circuit board and at least one inverter integrally arranged on the circuit board. The inverter is electrically connected to the electric actuator.
[0022] In the technical solution of the present utility model, the diaphragm pump includes a main body and a circuit board assembly. The main body includes a housing, an electric actuator arranged in the housing, and the circuit board assembly. The circuit board assembly includes a circuit board and at least one inverter. The inverter is electrically connected to the electric actuator. The inverter converts commercial power into the voltage and current types required by the electric actuator, thereby eliminating the relatively large adapter, so that the housing does not need to be provided with a too large installation space, thereby reducing the overall volume of the diaphragm pump to solve the problem of the too large volume of the existing diaphragm pump. Description of the Drawings
[0023] 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 the description of the embodiments or the prior art. Obviously, the drawings in the following description 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.
[0024] Figure 1 Schematic diagram of the structure of an embodiment of the diaphragm pump provided by the present invention;
[0025] Figure 2 For Figure 1 Cross-sectional view of the diaphragm pump in
[0026] Figure 3 For Figure 1 Schematic diagram of the motor assembly in
[0027] Figure 4 For Figure 3 Schematic diagram of another perspective of the motor assembly in
[0028] Figure 5 Explosion schematic diagram of the housing and the circuit board assembly;
[0029] Figure 6 Schematic diagram after the housing and the circuit board assembly are assembled;
[0030] Figure 7 For Figure 6 Schematic diagram of the circuit board assembly in
[0031] Figure 8 For Figure 6 Schematic diagram of the housing in
[0032] Explanation of the reference numerals in the drawings:
[0033] 100, diaphragm pump; 1, housing; 1a, second wire passing hole; 1b, second connection hole; 1c, drain hole; 2, electric actuator; 21, motor assembly; 211, motor housing; 211a, first wire passing hole; 212, motor; 213, first lead wire; 214, stator assembly; 3, circuit board assembly; 3a, first connection hole; 31, circuit board; 32, first inverter; 33, second inverter; 4, sealing sleeve; 5, external wiring; 6, connecting piece.
[0034] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the drawings. Detailed implementation manners
[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0036] 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 utility model, 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.
[0037] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood 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 solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
[0038] At present, the vast majority of the booster pumps used in water purifiers are DC brush diaphragm pumps. The whole water purifier needs to be equipped with 12 / 24 / 36V DC adapters to convert the mains power into direct current to supply power to the pump, and its supply current is relatively large. At the same time, solenoid valves in the water purifier, such as check valves and reflux flushing valves (generally 24V), also need adapters to convert the mains power into direct current to supply power to them, and their supply current is relatively small. Especially when the voltages required by the two types of electrical components, the pump and the solenoid valve, are different, the water purifier needs two power adapters to supply power, which greatly occupies the volume of the water purifier.
[0039] The present utility model proposes a diaphragm pump 100 to solve the problem of the too large volume of the existing diaphragm pump.
[0040] It can be understood that a diaphragm pump generally consists of a pump body, a diaphragm, and a driving device for driving the diaphragm to move. During the operation of the diaphragm pump, it is powered by the external mains power. When the driving device works, a voltage conversion module needs to be set to convert the mains power into the required voltage and power type for each electric component.
[0041] It should also be noted that in the prior art, a brushed motor is generally used as a driving device to drive the diaphragm to be extruded. In a brushed motor, multiple sets of coil windings are connected to a commutator, and the commutator abuts against a carbon brush. During the rotation of the rotor, the commutator also rotates accordingly. The alternating change of the current direction in the multiple sets of coil windings is completed by the continuous contact between the carbon brush and the commutator. Due to the existence of the mechanical commutation structure composed of the carbon brush and the commutator, the current brushed motors generally have a relatively large volume, resulting in the diaphragm pump occupying a relatively large installation space for the whole machine. The carbon powder generated by the wear of the carbon brush will reduce the insulation strength of the whole machine, and the wear process will generate heat and produce relatively large noise.
[0042] In the technical solution of the present application, the driving motor is a brushless motor. The brushless motor is composed of a motor main body and a driver, and is a typical mechatronic product. Since the brushless motor operates in an automatic control mode, it does not require an additional starting winding on the rotor like a synchronous motor under variable frequency speed regulation with heavy load starting, nor will it generate oscillations and loss of synchronization when the load changes suddenly. For the permanent magnets of small and medium-sized brushless motors, high magnetic energy level rare earth neodymium iron boron (Nd-Fe-B) materials are mostly used now. Therefore, the volume of the rare earth permanent magnet brushless motor is reduced by one frame size compared with a three-phase asynchronous motor of the same capacity, and there is no need to use the carbon brush and commutator in the traditional brushed motor, which can further reduce the volume of the booster pump.
[0043] Compared with the brushed motor, the brushless motor removes the carbon brush. The most direct change is that there is no electric spark generated during the operation of the brushed motor, which greatly reduces the interference of the electric spark to the remote control radio equipment. At the same time, without the carbon brush, the friction during the operation of the brushless motor is greatly reduced, the operation is smooth, and the noise is much lower.
[0044] It should also be noted that in order to provide a larger flux, the diaphragm pump described in this solution can be set as a five-chamber diaphragm pump. However, for a large-flux brushed pump, the instantaneous starting power of the large flux is large, and the impact on the diaphragm is large, resulting in premature failure of the diaphragm. The current service life is only 1200h, which is quite different from the 2000h of the small flux. Therefore, the demand for a high service life of the diaphragm is greater. Of course, the characteristics of the diaphragm pump described later are not limited to being applied to a five-chamber diaphragm pump, and can also be applied to diaphragm pumps with different numbers of chambers, which can be determined according to the actual situation specifically, and the embodiments of this specification do not limit this.
[0045] To solve the technical problems to be solved by the present application, please refer to Figures 1 to 3, in an embodiment of the diaphragm pump 100 provided by the present utility model, the diaphragm pump 100 includes a main body and a circuit board assembly 3. The main body includes a housing 1 and an electric actuator 2. The housing 1 forms an installation cavity with an opening at one end, and the electric actuator 2 is arranged in the housing 1. The circuit board assembly 3 is arranged in the housing 1 and is electrically connected to the electric actuator 2 for controlling the operation of the electric actuator 2. The circuit board assembly 3 includes a circuit board 31 and at least one inverter integrally arranged on the circuit board 31. The inverter is electrically connected to the electric actuator 2.
[0046] It can be understood that the main body can refer to the driving device of the diaphragm pump 100 or the whole of the driving device and the pump head. The electric actuator 2 can refer to the components that require electricity, such as a solenoid valve or a motor 212, etc. Of course, the electric actuator 2 is not limited to the above examples. For the convenience of description hereinafter, the electric actuator 2 including a brushed motor 212 and a solenoid valve is taken as an example for illustration.
[0047] It should be noted that the motor 212 is used to drive the diaphragm of the diaphragm pump 100 to move. In order to change the operating speed of the pump and thus affect the extrusion frequency and strength of the diaphragm, it can be achieved by adjusting the speed of the motor 212. Then, the motor 212 needs to be regulated. The solenoid valve can be used to control the flow direction and flow rate of the liquid in the diaphragm pump 100. Therefore, the solenoid valve also needs to be controlled to meet the needs of users.
[0048] The circuit board assembly 3 can automatically control the solenoid valve and the motor 212 to work according to the received control instructions. However, the currents and voltages at which the motor 212 and the solenoid valve work are different, and the mains power needs to convert their voltage and current types.
[0049] In this application, by setting the inverter, the inversion of voltage and current is realized. It should be noted that the inverter is composed of a group of switching devices (such as transistors or IGBTs) and a control circuit. The working principle of the inverter is to control the conduction and cut-off of the switching devices, so as to adjust the flow direction and magnitude of the current to achieve the conversion from the input power supply to the output power supply.
[0050] Therefore, the circuit board assembly 3 can automatically control the electric actuator 2 to work according to user needs, and through the inverter, provide the required current and voltage for the electric actuator 2.
[0051] In the technical solution of the present utility model, the diaphragm pump 100 includes a main body and a circuit board assembly 3. The main body includes a housing 1, an electric actuator 2 disposed in the housing 1, and the circuit board assembly 3. The circuit board assembly 3 includes a circuit board 31 and at least one inverter. The inverter is electrically connected to the electric actuator 2, and the inverter converts the commercial power into the voltage and current types required by the electric actuator 2, thereby eliminating the relatively large adapter, so that the housing 1 does not need to be provided with a too large installation space, thereby reducing the overall volume of the diaphragm pump 100 to solve the problem of the too large volume of the existing diaphragm pump 100.
[0052] Specifically, in order to drive the pump head to work, it is necessary to drive the motor 212 to work. Therefore, please refer to Figures 3 to 4 , in this embodiment, the electric actuator 2 includes a motor assembly 21; the inverter includes a first inverter 32 electrically connected to the motor assembly 21. Since the brushed motor 212 requires 42V to 310V alternating current to achieve driving, the first inverter 32 can be used to convert the commercial power into 42V to 310V alternating current. Therefore, there is no need to set a relatively large adapter, and the inversion is directly realized through the inversion circuit integrated on the circuit board 31.
[0053] It should be noted that when the inverter needs to convert the commercial power into alternating current of 42V to 310V, the commercial power is first converted into direct current by a rectifier. Then, the control circuit of the inverter will control the flow of current through the switching device according to the set requirements, so that the direct current power supply is converted into an alternating current power supply with the required voltage through the inversion circuit.
[0054] In order to facilitate the connection between the motor assembly 21 and the first inverter 32, in this embodiment, the motor assembly 21 includes a housing 211 and a motor 212 disposed in the housing 211. The housing 211 is sleeved on the open end of the housing 1; a first wire passing hole 211a is provided at the bottom of the housing 211, and the motor 212 is connected to the first inverter 32 through a first lead wire 213 passing through the first wire passing hole 211a.
[0055] Since the circuit board assembly 3 is disposed in the housing 1 and the housing 211 is sleeved on the housing 1, the circuit board assembly 3 is disposed opposite to the bottom of the housing 211. By providing the first wire passing hole 211a at the bottom of the housing 211, it is convenient for the first lead wire 213 to be connected. If the first wire passing hole 211a is provided on the side wall of the housing 211, the length of the first lead wire 213 needs to be longer, and when the housing 1 is sleeved on the outer periphery of the housing 211, the diameter of the housing 1 needs to be set to be greater than or equal to the diameter of the housing 211 plus the diameter of the first lead wire 213.
[0056] Sheath the casing 211 on the open end of the housing 1, and set the first wire passing hole 211a at the bottom of the casing 211. The outer diameter of the casing 211 can be set to be basically the same as the inner diameter of the housing 1, so that the diameter of the housing 1 can be set as small as possible to reduce the volume of the diaphragm pump 100.
[0057] It should be noted that in the working state of the diaphragm pump 100, the pump head of the diaphragm pump 100 is generally set above, and the motor 212 is set below. Therefore, the "bottom" of the casing 211 refers to the position of the lower end face of the casing 211 in the normal working state of the diaphragm pump 100.
[0058] Furthermore, the electric actuator 2 includes a solenoid valve; the inverter includes a second inverter 33 electrically connected to the solenoid valve. The solenoid valve needs 12 / 24 / 36V DC power to work properly. Therefore, the second inverter can be used to invert the mains power into 12 / 24 / 36V DC power. Thus, there is no need to set a relatively large adapter either, and the inversion can be directly achieved through the inversion circuit integrated on the circuit board 31.
[0059] It should be noted that when the inverter needs to invert the mains power into 12 / 24 / 36V DC power, the mains power will also be converted into DC power through a rectifier. Then, the control circuit of the inverter will control the switching device to adjust the output voltage to the required 12 / 24 / 36V DC power.
[0060] Furthermore, please refer to Figure 8 , in this embodiment, a second wire passing hole 1a is opened on the housing 1; a sealing sleeve 4 is provided at the second wire passing hole 1a, and the sealing sleeve 4 sheathes the periphery of the external wire 5 connected to the circuit board assembly 3. Since the circuit board assembly 3 needs to be powered by an external power supply, the external wire 5 passing through the second wire passing hole 1a is connected to the power supply.
[0061] When the external wire 5 passes through the second wire passing hole 1a, it has a clearance fit with the second wire passing hole 1a. In the case of external moisture, it is easy for the moisture to enter the housing 1 through the gap between the external wire 5 and the second wire passing hole 1a. By providing the sealing sleeve 4 and setting the sealing sleeve 4 as a waterproof rubber sleeve, it can be avoided that the external moisture enters the charged components such as the circuit board assembly 3 in the housing 1 from the second wire passing hole 1a.
[0062] In order to fix the circuit board assembly 3, please refer to Figure 5, in this embodiment, the circuit board assembly 3 is provided with a first connection hole 3a, the housing 1 is provided with a second connection hole 1b, and the circuit board assembly 3 is fixedly connected to the housing 1 through a connecting member 6 sequentially passing through the first connection hole 3a and the second connection hole 1b.
[0063] It can be understood that the first connection hole 3a can be set as a through hole, the second connection hole 1b can be set as a threaded hole, and the connecting member 6 can be set as a screw or the like. In this way, the circuit board assembly 3 is assembled to the housing 1 by screwing.
[0064] The number of the first connection hole 3a, the second connection hole 1b, and the connecting member 6 can all be set to 1, or 2, 3... The present application does not limit the number of the first connection hole 3a, the second connection hole 1b, and the connecting member 6.
[0065] Of course, the connection between the circuit board assembly 3 and the housing 1 is not limited to the above-mentioned screwing method, and can also be snap connection, bonding, etc., which can be specifically designed according to actual situations. The embodiments of this specification do not limit this.
[0066] In this embodiment, please refer to Figure 8 , the housing 1 is provided with a drain hole 1c communicating with the installation cavity. In this way, when external water accidentally enters the housing 1, the water can be discharged from the housing 1 in time to avoid short-circuiting of the drive board.
[0067] In this embodiment, the drain hole 1c is provided on the peripheral side wall of the housing 1. In this way, when the diaphragm pump 100 is in a normal working state, after external water enters the housing 1, it can be discharged from the drain hole 1c as soon as possible to avoid water retention and accumulation.
[0068] In this embodiment, please refer to Figure 4 , the motor assembly 21 includes a motor housing 211 and a stator assembly 214. The motor housing 211 is set as a plastic-sealed motor housing 211, and the stator assembly 214 is embedded in the plastic-sealed motor housing 211.
[0069] Specifically, the stator assembly 214 includes a stator core, which includes a stator yoke and a plurality of stator teeth provided on the stator yoke. A winding slot is formed between two adjacent stator teeth. The stator core is formed by laminating strip-shaped punching sheets and then bending and enclosing them. A clamping portion is provided at one end of the stator yoke, and a clamping groove is provided at the other end. The clamping portion and the clamping groove can be clamped and matched so that the strip-shaped punching sheets are laminated, bent and enclosed to form the stator core. Moreover, the stator assembly 214 formed by the stator core is injection-molded with the housing 211 to plastic-seal the live parts of the motor 212 into a closed whole, avoiding the occurrence of accidental failures and further reducing the assembly gap, effectively reducing the size of the brushed motor 212.
[0070] The present utility model further provides a water treatment device, which includes a filter and a diaphragm pump 100. The specific structure of the diaphragm pump 100 refers to the above-mentioned embodiments. Since this water treatment device adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one.
[0071] The above description is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the technical concept of the present utility model, or direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.
Claims
1. A diaphragm pump, characterized in that: include: The main body comprises a shell and an electric actuator, wherein the shell forms a mounting cavity with an opening at one end, and the electric actuator is arranged in the shell; as well as, A circuit board assembly is disposed in the housing and is electrically connected to the electric actuator to control the operation of the electric actuator. The circuit board assembly includes a circuit board and at least one inverter integrated on the circuit board. The inverter is electrically connected to the electric actuator.
2. The diaphragm pump according to claim 1, characterized in that The electric actuator comprises a motor assembly; The inverter includes a first inverter electrically connected to the motor assembly.
3. The diaphragm pump according to claim 2, characterized in that The motor assembly includes a casing and a motor disposed in the casing, wherein the casing is sleeved on an open end of the housing; A first wire-passing hole is provided at the bottom of the housing, and the motor and the first inverter are connected via a first lead wire passing through the first wire-passing hole.
4. The diaphragm pump according to claim 1, characterized in that The electric actuator comprises a solenoid valve; The inverter includes a second inverter electrically connected to the solenoid valve.
5. The diaphragm pump according to claim 1, characterized in that: The housing is provided with a second wire passing hole; A sealing sleeve is provided at the second wire-passing hole, and the sealing sleeve is sleeved on the periphery of the external wire connected to the circuit board assembly.
6. The diaphragm pump according to claim 1, characterized in that The circuit board assembly is provided with a first connection hole, the shell is provided with a second connection hole, and the circuit board assembly is fixedly connected to the shell via a connecting piece which is sequentially penetrated through the first connection hole and the second connection hole.
7. The diaphragm pump according to claim 1, characterized in that The housing is provided with a drainage hole communicated with the installation cavity.
8. The diaphragm pump according to claim 7, characterized in that The drainage hole is arranged on the peripheral side wall of the shell.
9. The diaphragm pump according to claim 2, characterized in that: The motor assembly comprises a housing and a stator assembly. The housing is configured as a plastic-sealed housing, and the stator assembly is embedded in the plastic-sealed housing.
10. A water treatment device, characterized in that: Comprising a diaphragm pump as claimed in any one of claims 1 to 9.