Diaphragm pump and dishwasher

Abstract

The diaphragm pump comprises a pump shell assembly, a compression assembly and a driving assembly, the pump shell assembly is provided with a plurality of fluid channels, a plurality of fluid inlets and a plurality of fluid outlets, the plurality of fluid channels are distributed around a preset axis, the plurality of fluid inlets correspond to the plurality of fluid channels respectively, and the plurality of fluid inlets correspond to the plurality of fluid outlets respectively. The multiple fluid outlets correspond to the multiple fluid channels respectively, and the fluid channels are configured to guide fluid to flow from the corresponding fluid inlets to the corresponding fluid outlets; the compression assembly is used for driving the fluid to be discharged from the fluid outlet and sucking the fluid from the fluid channel and the fluid inlet; the driving assembly is in transmission connection with the compression assembly. According to the diaphragm pump, the fluid inlet and the fluid outlet are separated through the fluid channel formed in the pump shell assembly, the structures of the compression assembly and the driving assembly can be simplified, the structural strength and the fatigue strength of the compression assembly and the driving assembly are improved, and the service life of the compression assembly and the driving assembly is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of pump technology, and in particular to a diaphragm pump and a dishwasher. Background Technology

[0002] The diaphragm pump in the related technology includes a motor, a drive support frame, and a bell-shaped air bladder. The motor shaft is connected to an eccentric wheel, and the rotation of the eccentric wheel is connected to the drive support frame. The drive support frame drives the bell-shaped air bladder to deform in order to pump fluid. The motor shaft drives the eccentric wheel to make an inverted conical motion, thereby causing the drive support frame to reciprocate, which in turn causes the bell-shaped air bladder to deform and realize the pumping of fluid.

[0003] In related technologies, the fluid inlet is usually located on the drive support frame, and the inlet valve is located on the bell-shaped air bag. Due to the structural limitations of the bell-shaped air bag and the drive support frame, the size of the inlet valve and the fluid inlet is limited, which restricts the pumping flow rate and pumping pressure of the diaphragm pump. In addition, it leads to the complex structure of the bell-shaped air bag and affects the structural strength of the bell-shaped air bag and the drive support frame. Utility Model Content

[0004] One objective of this invention is to provide a diaphragm pump and a dishwasher that utilizes a fluid channel provided in the pump housing assembly to separate the fluid inlet and fluid outlet, thereby simplifying the structure of the compression assembly and the drive assembly and improving their structural strength, fatigue strength and service life.

[0005] A diaphragm pump according to an embodiment of the present invention includes: a pump housing assembly, a compression assembly, and a drive assembly. The pump housing assembly has multiple fluid channels, multiple fluid inlets, and multiple fluid outlets. The multiple fluid channels are distributed around a preset axis. The multiple fluid inlets correspond to the multiple fluid channels, and the multiple fluid outlets correspond to the multiple fluid channels. The fluid channels are configured to guide fluid from the corresponding fluid inlet to the corresponding fluid outlet. The compression assembly is used to drive fluid to be discharged from the fluid outlet and to draw fluid from the fluid channels and the fluid inlets. The drive assembly is driveably connected to the compression assembly.

[0006] According to the embodiments of the present invention, the diaphragm pump separates the fluid inlet and the fluid outlet by using a fluid channel provided in the pump housing assembly, which can simplify the structure of the compression assembly and the drive assembly and improve their structural strength, fatigue strength and service life.

[0007] In addition, the diaphragm pump according to the above embodiments of the present invention may also have the following additional technical features:

[0008] In some embodiments, the fluid channel has an inner end and an outer end, the inner end of the fluid channel being closer to the preset axis than the outer end, the inner end of the fluid channel being connected to the corresponding fluid inlet, and the outer end being connected to the corresponding fluid outlet.

[0009] In some embodiments, in the projection along the preset axis, the line connecting the inner end of the fluid channel to the preset axis is located between the lines connecting two adjacent fluid outlets to the preset axis; and / or, in the projection along the preset axis, the line connecting the inner end of the fluid channel to the axis has an angle α with the fluid channel, the angle α being greater than or equal to 3.5° and less than or equal to 35.6°.

[0010] In some embodiments, a first rib is provided in the fluid channel, the first rib extending along the fluid channel and spaced apart from the side of the fluid channel.

[0011] In some embodiments, the fluid channel is configured as a straight channel; and / or, the fluid channel is tangentially connected to the fluid outlet along the fluid outlet; and / or, the plurality of fluid channels are inclined in the same direction about the preset axis as they extend in a direction away from the preset axis.

[0012] In some embodiments, the compression assembly includes: a plurality of inlet valves, a plurality of outlet valves, and a plurality of deformable sections. The plurality of inlet valves correspond to the plurality of fluid inlets, and the inlet valves are used to open and close the corresponding fluid inlets. The plurality of outlet valves correspond to the plurality of fluid outlets, and the outlet valves are used to open and close the corresponding fluid outlets. The plurality of deformable sections correspond to the plurality of fluid outlets, and the deformable sections are used to drive fluid to be discharged from the corresponding fluid outlet by changing their volume, and to draw fluid from the corresponding fluid passage and the fluid outlet.

[0013] In some embodiments, the inlet valve is closer to the preset axis than the deformable portion; and / or, the deformable portion and the inlet valve are configured as an integral part; and / or, the deformable portion is configured as a flexible bowl-shaped structure and uses deformation to change its volume.

[0014] In some embodiments, the compression assembly further includes a sealing portion having a first mating port opposite to the fluid outlet, the periphery of the opening of the deformable portion being connected to the periphery of the first mating port, and the sealing portion further including a second mating port opposite to the fluid inlet, the inlet valve being movably connected to the periphery of the second mating port.

[0015] In some embodiments, the inlet valve includes a first edge and a second edge, the first edge being spaced apart from the inner periphery of the second mating port, the second edge being connected to the periphery of the second mating port, the second edge being opposite to the fluid passage and disposed on the side of the inlet valve near the fluid outlet; and / or, the sealing portion, the inlet valve, and the deformable portion are configured as an integrally formed part.

[0016] In some embodiments, the number of fluid outlets is 2N, where N is a positive integer; or, the number of fluid outlets is eight; or, the compression assembly closes the edges of the plurality of fluid channels, the plurality of fluid inlets and the plurality of fluid outlets by attaching and compressing them.

[0017] In some embodiments, the pump housing assembly includes a first housing and a second housing stacked together, the first housing having a first surface facing the second housing, the second housing having a second surface facing the first housing, the fluid inlet being disposed in the second housing and opposite to the fluid passage along the axial direction of the pump housing assembly, the fluid outlet being disposed in the first housing, and the fluid passage being disposed on the first surface and communicating with the fluid outlet.

[0018] In some embodiments, the pump housing assembly further includes a third housing, with a pump chamber between the third housing and the first housing. The third housing includes a first cylindrical portion and a second cylindrical portion. One end of the first cylindrical portion is closed and the other end is opposite to the fluid outlet. The peripheral wall of the first cylindrical portion has a first notch to communicate with the pump chamber. One end of the second cylindrical portion has an outlet and the other end is connected to the first housing. The peripheral wall of the second cylindrical portion has a second notch to communicate with the pump chamber.

[0019] In some embodiments, the fluid outlet includes a settling tank and a through hole, the opening of the settling tank facing the compression assembly, and the through hole being located on the inner bottom surface of the settling tank.

[0020] In some embodiments, the settling tank includes a first tank portion and a second tank portion, the first tank portion and the second tank portion are connected, the second tank portion is closer to the compression assembly than the first tank portion, the inner diameter of the second tank portion is larger than the inner diameter of the first tank portion, and the fluid channel penetrates the inner circumferential surface of the second tank portion.

[0021] In some embodiments, the pump housing assembly is provided with a second rib, which is disposed within the fluid inlet, and at least a portion of the second rib is spaced apart from the inner circumferential surface of the fluid inlet.

[0022] In some embodiments, the drive assembly is configured to be connected to a voltage of not less than 10V and not more than 36V; or, the drive assembly includes a motor with a maximum speed of 1000 r / min or more and less than or equal to 2500 r / min.

[0023] The dishwasher according to an embodiment of the present invention includes the aforementioned diaphragm pump. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a diaphragm pump according to one embodiment of the present invention.

[0025] Figure 2 This is an exploded schematic diagram of a diaphragm pump according to an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the first housing of one embodiment of the present invention.

[0027] Figure 4 This is another schematic diagram of the first housing according to one embodiment of the present invention.

[0028] Figure 5 This is another schematic diagram of the first housing according to an embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the second housing according to one embodiment of the present invention.

[0030] Figure 7 This is another schematic diagram of the second housing according to one embodiment of the present invention.

[0031] Figure 8 This is another schematic diagram of the second housing according to one embodiment of the present invention.

[0032] Figure 9 This is a schematic diagram of a compression component according to an embodiment of the present invention.

[0033] Figure 10 This is another schematic diagram of a compression component according to an embodiment of the present invention.

[0034] Figure 11 This is a schematic diagram of the third housing according to one embodiment of the present invention.

[0035] Figure 12 This is another schematic diagram of the third housing according to one embodiment of the present invention.

[0036] Figure 13 This is a schematic diagram of the fourth housing according to one embodiment of the present invention.

[0037] Figure 14This is another schematic diagram of the fourth housing according to one embodiment of the present invention.

[0038] Figure 15 This is a schematic diagram of a driving component according to an embodiment of the present invention.

[0039] Reference numerals: Diaphragm pump 100, pump housing assembly 10, first housing 11, first surface 1101, third surface 1102, fluid outlet 1103, settling tank 1104, through hole 1105, positioning hole 1106, fluid channel 1107, inner end 1107a, outer end 1107b, first rib 112, preset axis L, line L1 connecting inner end 1107a and preset axis L, lines L2 and L3 connecting two adjacent fluid outlets 1103 and preset axis L, second housing Body 12, fluid inlet 1201, mounting port 1202, second surface 1203, second rib 121, annular rib 122, connecting rib 123, limiting flange 124, third housing 13, outlet 1301, first cylindrical part 131, second cylindrical part 132, fourth housing 14, inlet 1401, compression assembly 20, inlet valve 21, outlet valve 22, deformation part 23, sealing part 24, connecting part 25, drive assembly 30, motor 31, swing arm 32, cam 33. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0041] like Figure 1 and Figure 2 The diaphragm pump 100 according to an embodiment of the present invention includes a pump housing assembly 10, a compression assembly 20 and a drive assembly 30.

[0042] Specifically, the pump housing assembly 10 has multiple fluid inlets 1201, multiple fluid outlets 1103, and multiple fluid channels 1107. The multiple fluid channels 1107 are distributed around a preset axis L. The multiple fluid inlets 1201 correspond to the multiple fluid channels 1107, and the multiple fluid outlets 1103 correspond to the multiple fluid channels 1107. The fluid channels 1107 are configured to guide fluid from the corresponding fluid inlet 1201 to the corresponding fluid outlet 1103. The compression assembly 20 is used to drive fluid to discharge from the fluid outlet 1103 and to draw fluid from the fluid channels 1107 and the fluid inlets 1201. The drive assembly 30 is drively connected to the compression assembly 20 and is used to drive the compression assembly 20.

[0043] When the diaphragm pump 100 is working, the drive component 30 can drive the compression component 20. The compression component 20 can drive fluid to enter the corresponding fluid channel (1107) from multiple fluid inlets (1201), and then from the fluid channel (1107) to the corresponding fluid outlet 1103, and finally out from the fluid outlet 1103, thereby achieving the purpose of pumping fluid using the diaphragm pump 100.

[0044] According to an embodiment of the present invention, the diaphragm pump 100 has a pump housing assembly 10 with a fluid inlet 1201, a fluid outlet 1103, and a fluid channel 1107. This simplifies the structure of the compression assembly 20 and the drive assembly 30, and improves their structural strength, fatigue strength, and service life. Furthermore, by separating the fluid inlet 1201 and the fluid outlet 1103 using the fluid channel 1107 provided in the pump housing assembly 10, a larger pumping flow rate and pumping pressure can be achieved.

[0045] like Figure 5 As shown, in some embodiments, the fluid channel 1107 has an inner end 1107a and an outer end 1107b. The inner end 1107a of the fluid channel 1107 is closer to the preset axis L than the outer end 1107b. The fluid channel 1107 is configured such that the outer end 1107b can be connected to the corresponding fluid outlet 1103, and the inner end 1107a can be connected to the corresponding fluid inlet 1201.

[0046] Optionally, the compression component (20) in this invention can be configured to open and close the fluid inlet 1201 and the fluid outlet 1103. When the fluid inlet 1201 is open, the inner end 1107a of the fluid channel 1107 is connected to the corresponding fluid inlet 1201; when the fluid inlet 1201 is closed, the inner end 1107a of the fluid channel 1107 is disconnected from the corresponding fluid inlet 1201; when the fluid outlet 1103 is open, the outer end 1107b of the fluid channel 1107 is connected to the corresponding fluid outlet 1103; when the fluid outlet 1103 is closed, the outer end 1107b of the fluid channel 1107 is disconnected from the corresponding fluid outlet 1103.

[0047] The fluid channel 1107 is designed to extend from the inside to the outside, so that the fluid inside the pump housing assembly 10 can be easily sent to the fluid outlet 1103 through the fluid channel 1107, which facilitates the flow of fluid and can achieve a wider range of flow rates, thereby improving the performance of the diaphragm pump 100.

[0048] Optionally, in the projection along the preset axis L, the line L1 connecting the inner end 1107a of the fluid channel 1107 and the preset axis L is located between the lines L2 and L3 connecting the two adjacent fluid outlets 1103 and the preset axis L, thereby facilitating the connection of the fluid channel 1107 along the inclined direction and improving the performance of the diaphragm pump 100.

[0049] Optionally, the fluid channel 1107 is configured as a straight channel inclined radially from the inner end 1107a to the outer end 1107b. In the projection along the preset axis, the line L1 connecting the inner end 1107a of the fluid channel 1107 and the preset axis L forms an angle α with the fluid channel 1107. The angle α is greater than or equal to 3.5° and less than or equal to 35.6°, and optionally, the angle α can be 3.5°, 5°, 15°, 23°, 31°, or 35.6°. This allows fluid to easily enter the fluid channel 1107 through the fluid inlet 1201, facilitating smooth flow of fluid towards the fluid outlet 1103. For example, when pumping gas using the diaphragm pump 100, the negative pressure of the deformable part 23 can create a spiral airflow around the preset axis L, facilitating the smooth entry of the airflow into the fluid inlet 1201. Furthermore, it can generate radial tension, thereby providing pumping flow rate and pumping pressure.

[0050] like Figure 4 and Figure 5 In some embodiments, a first rib 112 is provided within the fluid channel 1107, extending along the fluid channel 1107. The first rib 112 improves the structural strength and stability of the pump housing assembly 10, and guides fluid flow, thereby reducing turbulence after the fluid enters the fluid channel 1107, improving stability during fluid flow, enhancing fluid flow performance, reducing flow resistance, and further increasing the flow rate, velocity, and pressure of the pumped fluid.

[0051] Optionally, the end of the first rib 112 may be flush with the inner circumferential surface of the second groove. Optionally, the first rib 112 may be spaced apart from the two opposite sides of the fluid channel 1107 along its width direction. Optionally, both ends of the first rib 112 may be spaced apart from the inner side of the inner end 1107a of the fluid channel 1107 and the inner circumferential surface of the fluid outlet 1103. This facilitates fluid diversion using the first rib 112, reducing fluid flow problems and flow resistance, and enabling stable fluid flow through the fluid channel 1107.

[0052] The fluid channel 1107 can be configured as a straight channel, which facilitates the flow of fluid along the fluid channel 1107, reduces obstruction during the fluid flow process, and improves pump output.

[0053] Optionally, the fluid channel 1107 is tangentially connected to the fluid outlet 1103 along the fluid outlet 1103. By introducing fluid tangentially, the flow effect of the water flow is fully utilized, further increasing the pumping flow rate of the diaphragm pump 100 and the pressure of the pumped fluid.

[0054] Optionally, the multiple fluid channels 1107, while extending away from the preset axis, are inclined in the same direction around the preset axis. This can further increase the flow rate and pressure of the pumped fluid by the diaphragm pump 100. It also facilitates the flow of fluid in a helical direction, allowing the fluid to quickly enter the fluid channel 1107 through the fluid inlet 1201.

[0055] like Figure 2 In some embodiments, the compression assembly 20 includes an inlet valve 21, an outlet valve 22, and a deformable portion 23. The inlet valve 21 is used to open and close the fluid inlet 1201, the outlet valve 22 is used to open and close the fluid outlet 1103, and the deformable portion 23 is used to drive fluid from the fluid inlet 1201 through the fluid passage 1107 to the fluid outlet 1103 by changing its volume, and to drive fluid to be discharged from the fluid outlet 1103.

[0056] Specifically, the compression assembly 20 includes: multiple inlet valves 21, multiple outlet valves 22, and multiple deformable parts 23. The multiple inlet valves 21 correspond to multiple fluid inlets 1201 respectively, and the inlet valves 21 are used to open and close the corresponding fluid inlets 1201. The multiple outlet valves 22 correspond to multiple fluid outlets 1103 respectively, and the outlet valves 22 are used to open and close the corresponding fluid outlets 1103. The multiple deformable parts 23 correspond to multiple fluid outlets 1103 respectively, and the deformable parts 23 are used to drive fluid to be discharged from the corresponding fluid outlets 1103 by changing the volume, and to draw fluid from the corresponding fluid channels 1107 and fluid outlets 1103.

[0057] When the diaphragm pump 100 is operating, the drive assembly 30 can drive the deformation section 23 to change its volume to compress the fluid (e.g., water or air). When the volume within the deformation chamber decreases, the inlet valve 21 closes, and the fluid inlet 1201 closes; the outlet valve 22 opens, and the fluid outlet 1103 opens, allowing the fluid within the deformation chamber to be pumped out through the fluid outlet 1103. When the volume within the deformation chamber increases, the inlet valve 21 opens, and the fluid inlet 1201 opens; the outlet valve 22 closes, and the fluid outlet 1103 closes, creating a negative pressure within the deformation chamber. This pressure drives the fluid from the fluid inlet 1201 to enter the deformation chamber through the fluid channel 1107. By reciprocatingly driving the deformation chamber to deform, repeatedly decreasing and increasing its volume, the fluid is pumped out of the deformation chamber through the fluid outlet 1103, thus achieving the function of the diaphragm pump 100 in pumping fluid. The deformation section 23 can pump the fluid inside the deformation chamber into the pump chamber by compressing the deformation chamber, and can generate negative pressure in the deformation chamber by expanding the deformation chamber, thereby controlling the fluid to enter the deformation chamber from the fluid inlet 1201 and the fluid channel 1107, thus realizing the pumping of fluid. By setting the fluid channel 1107 to separate the inlet valve 21 and the deformation section 23, a larger pumping flow rate and pumping pressure can be achieved.

[0058] Among them, the inlet valve 21 is opposite to the corresponding fluid inlet 1201 along the direction parallel to the preset axis L, and the deformable part 23 is opposite to the corresponding fluid outlet 1301 along the direction parallel to the preset axis L.

[0059] In some embodiments, the inlet valve 21 is closer to the preset axis L than the deformable portion 23. Specifically, multiple deformable portions 23 are distributed around the preset axis L along the circumference of the first housing 11, and multiple inlet valves 21 are distributed around the preset axis L, with the multiple inlet valves 21 located inside the multiple deformable portions 23. This allows sufficient fluid to be supplied to the inlet valves 21 for pumping by the compression assembly 20, improving pumping efficiency and pumped fluid pressure. When the volume of the deformable portion 23 changes, fluid can be driven through the inlet valve 21 located on the inner side into the fluid channel 1107 and flow towards the deformable portion 23 located on the outer side, conforming to the fluid flow law and improving the pumping flow rate.

[0060] In addition, the multiple deformation sections 23 and multiple inlet valves 21 can be arranged to be staggered along the circumference of the compression assembly 20.

[0061] Optionally, the deformable part 23 and the inlet valve 21 are configured as a single integral molding. This simplifies the structure of the diaphragm pump 100, improves its sealing performance, and thus increases its pumping flow rate and capacity. Additionally, the deformable part 23 can be configured as a flexible bowl-shaped structure, utilizing deformation to change its volume. This further simplifies the structure of the diaphragm pump 100.

[0062] In some embodiments, the compression assembly 20 further includes a sealing portion 24, which has a first mating port opposite to the fluid outlet 1103. The periphery of the opening of the deformable portion 23 is connected to the periphery of the first mating port. The sealing portion 24 can be used to seal the gap between the deformable portion and the periphery of the fluid outlet 1103, thereby improving the pumping efficiency and effect of the fluid.

[0063] Optionally, the sealing part 24 further includes a second mating port opposite to the fluid inlet 1201, and the inlet valve 21 is movably connected to the periphery of the second mating port. This can improve the stability of the compression assembly 20.

[0064] Optionally, the inlet valve 21 may include a first edge and a second edge. The first edge is spaced apart from the inner periphery of the second mating port, and the second edge is connected to the periphery of the second mating port. The second edge is opposite to the fluid passage 1107 and is located on the side of the inlet valve 21 near the fluid outlet 1103. This allows the inlet valve 21 to easily open and close the fluid inlet 1201, enabling stable switching between the open and closed positions of the inlet valve 21, improving the stability and service life of the diaphragm pump 100.

[0065] Optionally, the sealing part 24, the deformable part 23, and the inlet valve 21 can be configured as a single piece, which can improve the structural strength and stability of the compression assembly 20. In addition, the sealing part 24 is in a sealing fit with the pump housing assembly.

[0066] like Figure 10 In conjunction with the foregoing, the compression assembly 20 may include a sealing part 24, a plurality of deformable parts 23 and a plurality of inlet valves 21, wherein the sealing part 24 is provided with a first mating port and a second mating port, the deformable part 23 is tower-shaped, one end of the deformable part 23 is open and the rest is closed, the periphery of the open end of the deformable part 23 is connected to the periphery of the first mating port, and the closed section of the deformable part 23 is provided with a connecting part 25, which can be used to connect to the drive assembly 30 so that the drive assembly 30 can drive the deformable part 23 to deform.

[0067] Optionally, the number of fluid outlets 1103 can be 2N, where N is a positive integer. Alternatively, the number of fluid outlets 1103 can be eight, and the eight fluid outlets 1103 are evenly spaced around a preset axis L. By setting multiple fluid outlets 1103, the uniformity and continuity of fluid pumping can be improved, and stable pumping of fluid can be achieved. In addition, the number of deformable sections is the same as the number of fluid outlets 1103.

[0068] Optionally, the compression assembly 20 can seal the edges of multiple fluid channels 1107, multiple fluid inlets 1201, and multiple fluid outlets 1103 by attaching and compressing them. Specifically, the compression assembly 20 (or the aforementioned sealing part 24) can be attached to both sides of the fluid channels 1107, and the edges of the fluid channels 1107 are sealed by the compression fitting of the first and second housings described below; the compression assembly 20 (or the aforementioned sealing part 24) can also be attached to the periphery of the fluid inlets 1201, and the periphery of the fluid inlets 1201 is sealed by the compression fitting of the first and second housings described below; the compression assembly 20 (or the aforementioned sealing part 24) can also be attached to the periphery of the fluid outlets 1103, and the periphery of the fluid outlets 1103 is sealed by the compression fitting of the first and second housings described below. Through the above arrangement, effective sealing of the fluid channels can be achieved, thereby improving the pumping capacity and effect of the diaphragm pump 100.

[0069] As shown in the figure, in some embodiments of this utility model, the pump housing assembly 10 includes a first housing 11 and a second housing 12 stacked together. The first housing 11 has a first surface 1101 facing the second housing 12, and the second housing 12 has a second surface 1203 facing the first housing 11. The fluid inlet 1201 is disposed in the second housing 12 and is opposite to the fluid channel 1107 along the axial direction of the pump housing assembly. Specifically, the inner ends of the fluid inlet 1201 and the fluid channel 1107 can be opposite each other in a direction parallel to a predetermined axis L. The fluid outlet 1103 is disposed in the first housing 11, and the fluid channel 1107 is disposed on the first surface 1101, communicating with the fluid outlet 1103. Optionally, in conjunction with the foregoing embodiments, the sealing portion 24 is stacked between the first housing 11 and the second housing 12.

[0070] The fluid channel 1107 can be configured to extend radially from the inside to the outside along the first housing 11. The outer end 1107b of the fluid channel 1107 connects to the corresponding fluid outlet 1103, and the inner end 1107a is opposite to the fluid inlet 1201. The inner end 1107a is closer to the center of the first housing 11 than the outer end 1107b. The outer end 1107b of the fluid channel 1107 can penetrate the inner circumferential surface of the fluid outlet 1103 to facilitate communication between the fluid channel 1107 and the fluid outlet 1103. The inner end 1107a of the fluid channel 1107 can be positioned opposite to the fluid inlet 1201, and the inlet valve 21 can be located between the fluid inlet 1201 and the fluid inlet 1201 of the fluid channel 1107. Optionally, in the projection along a preset axis L, the inlet valve 21 and the fluid inlet 1201 fall into the inner end 1107a of the fluid channel 1107, so that the inlet valve 21 can open and close smoothly. In addition, the inner side of the inner end 1107a of the fluid channel 1107 is made into an arc shape, which can facilitate the forming of the fluid channel 1107. The inlet valve 21 can be made into an arc shape, and the diameter of the inlet valve 21 is smaller than the diameter of the inner end 1107a of the fluid channel 1107, which can facilitate the deformation of the inlet valve 21 and improve the stability of the first housing 11.

[0071] The first housing 11 may be equipped with an outlet valve 22, which includes a first head and a first umbrella-shaped part. The first head passes through and is positioned in the positioning hole 1106, and the first umbrella-shaped part is connected to the first head. The first umbrella-shaped part can be stacked on the second surface 1203 of the first housing 11. When the fluid is compressed in the deformation chamber, the first umbrella-shaped part can open the through hole 1105, thereby facilitating the fluid to pass through the through hole 1105 and be discharged. When the volume of the deformation chamber increases, a negative pressure is formed in the deformation chamber. Under the action of the negative pressure, the first umbrella-shaped part is adsorbed on the second surface 1203, thereby sealing the through hole 1105. The above arrangement can easily realize the unidirectional flow of the inlet valve 21.

[0072] Additionally, the second housing 12 may also include annular ribs 122 and multiple connecting ribs 123. The annular ribs 122 may be located at the center of the bottom wall, and the connecting ribs 123 may extend radially along the second housing 12, with both ends connected to the annular ribs 122 and the limiting flange 124, respectively. The fluid inlet 1201 may be located between adjacent connecting ribs 123. Furthermore, as... Figures 6 to 8 The second housing 12 is provided with a mounting port 1202, and the deformable part 23 passes through the mounting port 1202. This allows the periphery of the mounting port 1202 to be easily used to seal the periphery of the deformable cavity by cooperating with the compression component 20, thereby improving the sealing performance.

[0073] The second housing 12 may include a bottom wall, and a mounting port 1202 may be provided on the bottom wall. A limiting flange 124 is provided around the periphery of the mounting port 1202. The limiting flange 124 extends in a direction away from the first housing 11. The deformable part can pass through the mounting port 1202, which avoids damage to the compression assembly 20 by the drive assembly 30 during the driving process, and improves the stability and service life of the diaphragm pump 100. The second housing 12 may also include a peripheral wall that connects to the periphery of the bottom wall.

[0074] like Figure 11 and Figure 12 In some embodiments, the pump housing assembly 10 further includes a third housing 13, with a pump chamber provided between the third housing 13 and the first housing 11. A fluid outlet 1103 can communicate with the pump chamber to facilitate pumping fluid into the pump chamber through the fluid outlet 1103. The first housing 11 can be stacked between the second housing 12 and the third housing 13.

[0075] The third housing 13 includes a first cylindrical portion 131, one end of which is closed and the other end is opposite to the fluid outlet 1103. After the fluid is discharged from the fluid outlet 1103, it will enter the first cylindrical portion 131. The first cylindrical portion 131 can realize the stable assembly of the first housing 11 and the third housing 13, and at the same time provide clearance space for the movement of the outlet valve 22, so that the outlet 1301 can open and close the fluid outlet 1103. In addition, the peripheral wall of the first cylindrical portion 131 is provided with a first notch to connect to the pump chamber, so that after the fluid enters the first cylindrical portion 131, it can be discharged from the first cylindrical portion 131 and enter the pump chamber.

[0076] The third housing 13 may be provided with an outlet 1301, through which the fluid entering the pump chamber is finally discharged. The third housing 13 is also provided with a second cylindrical part 132, with the outlet 1301 located at one end of the second cylindrical part 132. The other end of the second cylindrical part is connected to the first housing 11, and the second cylindrical part is provided with a second notch for connecting to the pump chamber, so that the fluid in the pump chamber can enter the outlet 1301 and be discharged.

[0077] In some embodiments, the fluid outlet 1103 includes a settling tank 1104 and a through hole 1105. The opening of the settling tank 1104 faces the compression assembly 20, and the through hole 1105 is located on the inner bottom surface of the settling tank 1104. Additionally, it may include a positioning hole 1106, located on the inner bottom surface of the settling tank 1104. Multiple through holes 1105 may surround the positioning hole 1106. The positioning hole 1106 is used to position the outlet valve 22, and the fluid passage 1107 penetrates the inner circumferential surface of the settling tank 1104.

[0078] In addition, the periphery of the positioning hole 1106 is provided with an annular flange, which surrounds the positioning hole 1106 and protrudes from the inner bottom surface of the recess 1104; in conjunction with the above, the third surface of the first housing (the third surface is provided on the first housing and away from the second housing) is provided with a boss, the boss and the recess 1104 are opposite to each other along the axial direction of the first housing 11, and the boss protrudes from the third surface, and the through hole 1105 can be configured to penetrate the first housing 11 along the thickness direction; the through hole 1105 is configured to penetrate the first housing 11 along the thickness direction.

[0079] Furthermore, the settling tank 1104 includes a first tank section and a second tank section, which are distributed and connected along the axial direction of the first housing 11. A through hole 1105 and a positioning hole 1106 are provided on the inner bottom surface of the first tank section. The second tank section is closer to the first surface 1101 than the first tank section, and its inner diameter is larger than that of the first tank section. A step is constructed at the connection between the first and second tank sections, and a fluid channel 1107 penetrates the inner circumferential surface of the second tank section. This increases the volume of the compression chamber formed between the settling tank 1104 and the deformable portion 23, thereby increasing the pumping flow rate and the pressure of the pumped fluid of the diaphragm pump 100.

[0080] In some embodiments, the pump housing assembly is provided with a second rib 121, wherein the second rib 121 may be disposed within the fluid inlet 1201, and at least a portion of the second rib 121 is spaced apart from the inner circumferential surface of the fluid inlet 1201. The second rib 121 can improve the structural strength and stability of the pump housing assembly, and can also avoid problems such as damage caused by excessive deformation of the inlet valve 21, thereby improving the stability and service life of the diaphragm pump 100.

[0081] The drive assembly 30 in this invention is configured to be suitable for connection to a voltage of not less than 10V and not more than 36V. This can improve the safety and operational stability of the diaphragm pump. For example, the drive assembly 30 is suitable for connection to voltages of 12V, 20V, or 24V.

[0082] In addition, the maximum speed of the drive component is between 1000-2500 r / min, or in other words, the drive component includes a motor with a maximum speed greater than or equal to 1000 r / min and less than or equal to 2500 r / min.

[0083] like Figure 13 and Figure 14 In some embodiments, the pump housing assembly 10 further includes a fourth housing 14, which is stacked with the second housing 12, forming a suction chamber between the fourth housing 14 and the second housing 12. The fourth housing 14 is provided with an inlet 1401, through which fluid can enter the suction chamber and be drawn into the fluid channel 1107 through the fluid inlet 1201.

[0084] The inlet 1401 of the fourth housing 14 can be made into a grid shape to facilitate the filtration of the incoming fluid, thereby improving the stability and service life of the plunger pump.

[0085] In addition, the fourth housing 14 is provided with a fourth positioning post extending along the axial direction of the pump housing assembly, the second housing 12 is provided with a second positioning post extending along the axial direction, the first housing 11 is provided with a first positioning post extending along the axial direction, and the third housing 13 is provided with a third positioning post extending along the axial direction. The fourth positioning post, the second positioning post, the first positioning post, and the third positioning post are distributed sequentially along the axial direction of the plunger pump and can be positioned by fasteners, thereby connecting the first housing 11, the second housing 12, the third housing 13, and the fourth housing 14 into a whole.

[0086] Alternatively, the third positioning post can be configured to protrude from the third housing 13, and the first housing 11 has a groove corresponding to the third positioning post. When the third housing 13 and the second housing 12 are assembled, the third positioning post can be inserted into the first housing 11 to achieve centering between the first housing 11 and the third housing 13. The first positioning post can be configured to protrude from the first housing 11, and the second housing 12 has a groove corresponding to the first positioning post. When the first housing 11 and the second housing 12 are assembled, the first positioning post can be inserted into the second housing 12 to achieve centering between the second housing 12 and the first housing 11. The second positioning post can be configured to protrude from the second housing 12, and the fourth housing 14 has a groove corresponding to the second positioning post. When the second housing 12 and the fourth housing 14 are assembled, the second positioning post can be inserted into the fourth housing 14 to achieve centering between the fourth housing 14 and the second housing 12.

[0087] like Figure 15The drive assembly 30 may include a motor 31 and a swing arm 32. The motor 31 may be fixedly connected to the fourth housing 14. The motor 31 may be provided with a cam 33, and the swing arm 32 may be drivenly connected to the cam 33 to convert the rotational motion of the motor 31 into an eccentric motion along the axial direction. The central axis of the swing arm 32 may be set to have an angle with the drive shaft of the motor 31, and the swing arm 32 is rotatably connected to the motor 31. The swing arm 32 is connected to the deformable part 23 to restrict the circumferential rotation of the swing arm 32. Thus, under the drive of the motor 31, the cam 33 will rotate. Since the axis of the swing arm 32 has an angle with the axis of the motor 31, and the deformable part 23 restricts the rotation of the swing arm 32, the swing arm 32 will swing, thereby driving the deformable part 23.

[0088] In addition, this utility model also provides a dishwasher, including the aforementioned diaphragm pump 100. The aforementioned diaphragm pump 100 can be used to pump water, air, detergent, etc., and can have the technical advantages brought by the aforementioned diaphragm pump 100.

[0089] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0090] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0091] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0092] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0093] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0094] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A diaphragm pump, characterized in that, include: A pump housing assembly having multiple fluid channels, multiple fluid inlets, and multiple fluid outlets, wherein the multiple fluid channels are distributed around a preset axis, the multiple fluid inlets correspond to the multiple fluid channels respectively, and the multiple fluid outlets correspond to the multiple fluid channels respectively, and the fluid channels are configured to guide fluid from the corresponding fluid inlet to the corresponding fluid outlet; A compression assembly for driving fluid out of the fluid outlet and drawing fluid from the fluid channel and the fluid inlet; A drive assembly, which is drive-connected to the compression assembly.

2. The diaphragm pump according to claim 1, characterized in that, The fluid channel has an inner end and an outer end. The inner end of the fluid channel is closer to the preset axis than the outer end. The inner end of the fluid channel can be connected to the corresponding fluid inlet, and the outer end can be connected to the corresponding fluid outlet.

3. The diaphragm pump according to claim 2, characterized in that, In the projection along the preset axis, the line connecting the inner end of the fluid channel to the preset axis is located between the lines connecting two adjacent fluid outlets to the preset axis; and / or, in the projection along the preset axis, the line connecting the inner end of the fluid channel to the axis has an angle α with the fluid channel, the angle α being greater than or equal to 3.5° and less than or equal to 35.6°.

4. The diaphragm pump according to claim 2, characterized in that, The fluid channel is provided with a first rib, which extends along the fluid channel and is spaced apart from the side of the fluid channel.

5. The diaphragm pump according to claim 1, characterized in that, The fluid channel is configured as a straight channel; and / or, the fluid channel is tangentially connected to the fluid outlet along the fluid outlet; and / or, the plurality of fluid channels are inclined in the same direction around the preset axis as they extend in a direction away from the preset axis.

6. The diaphragm pump according to claim 1, characterized in that, The compression component includes: Multiple inlet valves, each corresponding to a multiple fluid inlet, are used to open and close the corresponding fluid inlet. Multiple outlet valves, each corresponding to a multiple fluid outlet, wherein the outlet valves are used to open and close the corresponding fluid outlets; Multiple deformable sections are provided, each corresponding to a plurality of fluid outlets. The deformable sections are used to drive fluid to be discharged from the corresponding fluid outlet by changing their volume, and to draw fluid from the corresponding fluid channel and the fluid outlet.

7. The diaphragm pump according to claim 6, characterized in that, The inlet valve is closer to the preset axis than the deformable part; and / or, the deformable part and the inlet valve are configured as an integral part; and / or, the deformable part is configured as a flexible bowl-shaped structure and changes its volume by deformation.

8. The diaphragm pump according to claim 6, characterized in that, The compression assembly further includes a sealing part, which has a first mating port opposite to the fluid outlet. The periphery of the opening of the deformable part is connected to the periphery of the first mating port. The sealing part also includes a second mating port opposite to the fluid inlet. The inlet valve is movably connected to the periphery of the second mating port.

9. The diaphragm pump according to claim 8, characterized in that, The inlet valve includes a first edge and a second edge. The first edge is spaced apart from the inner periphery of the second mating port, and the second edge is connected to the periphery of the second mating port. The second edge is opposite to the fluid channel and is located on the side of the inlet valve near the fluid outlet. And / or, the sealing part, the inlet valve, and the deformable part are configured to be integrally formed.

10. The diaphragm pump according to claim 1, characterized in that, The number of fluid outlets is 2N, where N is a positive integer; or, the number of fluid outlets is eight; or, the compression assembly closes the edges of the plurality of fluid channels, the plurality of fluid inlets and the plurality of fluid outlets by attaching and compressing.

11. The diaphragm pump according to any one of claims 1-10, characterized in that, The pump housing assembly includes a first housing and a second housing stacked together. The first housing has a first surface facing the second housing, and the second housing has a second surface facing the first housing. The fluid inlet is located in the second housing and is opposite to the fluid channel along the axial direction of the pump housing assembly. The fluid outlet is located in the first housing, and the fluid channel is located on the first surface and communicates with the fluid outlet.

12. The diaphragm pump according to claim 11, characterized in that, The pump housing assembly further includes a third housing, and a pump chamber is provided between the third housing and the first housing. The third housing includes a first cylindrical section and a second cylindrical section. One end of the first cylindrical section is closed and the other end is opposite to the fluid outlet. The peripheral wall of the first cylindrical section is provided with a first notch to communicate with the pump chamber. One end of the second cylindrical section is provided with an outlet and the other end is connected to the first housing. The peripheral wall of the second cylindrical section is provided with a second notch to communicate with the pump chamber.

13. The diaphragm pump according to claim 1, characterized in that, The fluid outlet includes a settling tank and a through hole, the opening of the settling tank facing the compression assembly, and the through hole located on the inner bottom surface of the settling tank.

14. The diaphragm pump according to claim 13, characterized in that, The settling tank includes a first tank section and a second tank section, the first tank section and the second tank section are connected, the second tank section is closer to the compression component than the first tank section, the inner diameter of the second tank section is larger than the inner diameter of the first tank section, and the fluid channel penetrates the inner circumferential surface of the second tank section.

15. The diaphragm pump according to claim 1, characterized in that, The pump housing assembly is provided with a second rib, which is disposed inside the fluid inlet, and at least a portion of the second rib is spaced apart from the inner circumferential surface of the fluid inlet.

16. The diaphragm pump according to claim 1, characterized in that, The drive assembly is configured to be suitable for accessing a voltage of not less than 10V and not more than 36V; or, the drive assembly includes a motor with a maximum speed of greater than or equal to 1000r / min and less than or equal to 2500r / min.

17. A dishwasher, characterized in that, The diaphragm pump included in any one of claims 1-16.

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