Pump

Abstract

The present invention discloses a pump, which comprises a pump casing, a motor, a heating assembly, a bushing and an impeller, wherein the pump casing has a pump cavity, a water inlet and a water outlet both of which are connected to the pump cavity are arranged on the peripheral wall of the pump casing, the motor is arranged at the first end of the pump casing, the heating assembly comprises a heat conducting plate and a heating pipe connected to the heat conducting plate, the heat conducting plate is arranged at the second end of the pump casing, the bushing is installed in the pump cavity and arranged adjacent to the heating assembly, and is used to divide the pump cavity into a water inlet chamber and a water pressure chamber, the water inlet chamber is connected to the water pressure chamber, a part of the heating pipe is arranged in the water inlet chamber and the two ends of the heating pipe pass through the heat conducting plate from the water inlet chamber respectively, and the impeller is arranged in the water pressure chamber and connected to the motor. The heating part in the pump of the present invention can evenly heat the liquid in the pump cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of pumps, and in particular to a pump. Background Art

[0002] Home appliances such as dishwashers often require a power system and a heating system to work together to provide power for the medium and heat the medium at the same time. Therefore, a large space needs to be reserved for the power system and the heating system to be configured separately.

[0003] In the related art, a centrifugal pump and a heater are integrated together to form an integrated heating pump, which is composed of a motor part, a pump body part and a heating part, etc., and provides a conveying power for the medium while heating the medium. However, the heating part in the related art has the defect of uneven heating of the liquid in the pump, which needs to be improved. Summary of the invention

[0004] To this end, the present invention provides a pump, in which a heating part can evenly heat the liquid in the pump chamber.

[0005] A pump according to an embodiment of the present invention comprises a pump casing, the pump casing having a pump cavity, a water inlet and a water outlet both connected to the pump cavity are provided on the peripheral wall of the pump casing; a motor, the motor is arranged at a first end of the pump casing; a heating assembly, the heating assembly comprises a heat conducting plate and a heating tube connected to the heat conducting plate, the heat conducting plate is arranged at a second end of the pump casing; a bushing, the bushing is installed in the pump cavity and is arranged adjacent to the heating assembly, and is used to divide the pump cavity into a water inlet chamber and a water pressure chamber, the water inlet chamber and the water pressure chamber are connected, a part of the heating tube is arranged in the water inlet chamber, and both ends of the heating tube respectively pass through the heat conducting plate from the water inlet chamber; an impeller, the impeller is arranged in the water pressure chamber and is connected to the motor.

[0006] According to the pump of the embodiment of the present invention, by arranging part of the heating pipe in the water inlet chamber, the heating part in the pump can evenly heat the liquid in the pump cavity.

[0007] In some embodiments, the heating assembly further comprises a mounting component for connecting the heating tube and the heat conducting plate.

[0008] In some embodiments, the mounting component includes a first flange, a second flange and a fastener, the first flange cooperates with the outer end surface of the heat conducting plate, the second flange cooperates with the inner end surface of the heat conducting plate, the fastener sequentially connects the first flange, the heat conducting plate and the second flange, and the two ends of the heating tube respectively pass through the second flange, the heat conducting plate and the first flange in sequence and extend out of the outer end surface of the first flange.

[0009] In some embodiments, the mounting component further includes a rubber ring, a hole cooperating with the rubber ring is provided in the heat conducting plate, and the rubber ring is located between the first flange and the second flange.

[0010] In some embodiments, the heating assembly further includes a thermostat and a fuse, and the thermostat and the fuse are both disposed on the outer end surface of the heat conducting plate.

[0011] In some embodiments, the heating component also includes a thermally conductive rod, the thermostat and the fuse are both connected in series with the heating tube via the thermally conductive rod, the thermostat and the fuse are arranged in parallel, and the thermally conductive rod connecting the thermostat and the heating tube and the thermally conductive rod connecting the fuse and the heating tube are arranged substantially parallel to each other.

[0012] In some embodiments, the water inlet and the water outlet are arranged on the peripheral wall of the pump housing, and the water inlet and the water outlet are arranged on the same side or opposite sides of the pump housing.

[0013] In some embodiments, the bushing has a bushing cavity with both ends connected to the pump cavity, the portion of the pump cavity located on the first side of the bushing forms the water pressure chamber, the portion of the pump cavity located on the second side of the bushing and the bushing cavity form the water inlet chamber, the bushing is provided with a groove, the groove extends from the outer end surface of the first end of the bushing along the axial spiral of the bushing, the peripheral wall of the bushing is provided with a first port connected to the water inlet and a second port connected to the water outlet, the first port is arranged adjacent to the first end of the groove and connected to the bushing cavity, and the second port is connected to the second end of the groove.

[0014] In some embodiments, the radial dimension of the groove gradually increases along the spiral extension direction, and the bottom surface of the groove is a curved surface that is concave inward along the axial direction of the bushing.

[0015] In some embodiments, an exhaust hole is provided at the second end of the groove, and the exhaust hole connects the water inlet chamber and the water pressure chamber. At least one guide plate is provided in the bushing cavity, and two exhaust holes are provided. One of the at least one guide plate is located between the two exhaust holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an overall structural diagram of a pump according to an embodiment of the present invention;

[0017] Figure 2 is a cross-sectional view of a pump according to an embodiment of the present invention;

[0018] Figure 3 is an exploded view of a pump according to an embodiment of the present invention;

[0019] Figure 4 is an exploded view of a pump body according to an embodiment of the present invention;

[0020] Figure 5 is an isometric view of a bushing according to an embodiment of the present invention;

[0021] Figure 6 is a structural diagram of a bushing according to an embodiment of the present invention;

[0022] Figure 7 is a side view of a pump body according to an embodiment of the present invention;

[0023] Figure 8 is a schematic structural diagram of the connection between a pump and a bottom tank of a dishwasher according to an embodiment of the present invention;

[0024] Fig. 9 is a structural diagram of a connector according to an embodiment of the present invention;

[0025] Fig.10 is an exploded view of a pump having a connecting member according to another embodiment of the present invention;

[0026] Fig.11 is a structural diagram of a mounting member according to an embodiment of the present invention;

[0027] Fig.12 is a schematic structural diagram of a connecting member connected to a shock absorbing member according to another embodiment of the present invention;

[0028] Fig.13 is a schematic structural diagram of a heating assembly according to an embodiment of the present invention;

[0029] Fig.14 is a schematic structural diagram of a heating assembly according to another embodiment of the present invention;

[0030] Fig.15 is a schematic structural diagram of a heating assembly according to yet another embodiment of the present invention;

[0031] Fig.16 is a cross-sectional view of a heating assembly according to yet another embodiment of the present invention;

[0032] Fig.17 is an exploded view of a heating assembly according to yet another embodiment of the present invention;

[0033] Fig.18 1 is an overall structural diagram of a pump according to another embodiment of the present invention.

[0034] Reference numerals:

[0035] Pump 100, pump housing 1, pump chamber 11, water inlet chamber 111, water pressure chamber 112, water inlet pipe 12, water outlet pipe 13, water distribution plate 2, cylinder 21, flange 22, cofferdam 23, motor 3, stator 31, rotor 32, motor shaft 33, heating component 4, hot plate 41, heating element 42, thermostat 43, heat conducting rod 45, mounting component 46, first flange 461, second flange 462, fastener 463, bolt 4631, nut 4632, rubber ring 464, fuse 44, bushing 5, bushing cavity 501, groove 51, first Port 52, second port 53, first hole 54, exhaust hole 55, boss 56, second hole 57, guide plate 58, positioning column 59, impeller 6, mounting member 7, protrusion 701, first straight section 71, arc section 72 and second straight section 73, cover shell 8, bottom groove 200, extension portion 201, groove outlet 202, spray inlet 203, spray outlet 204, connecting assembly 300, connecting member 301, first straight portion 3011, second straight portion 3012, locking protrusion 302, shock absorbing member 303, first through groove 304, second through groove 305. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but cannot be understood as limiting the present invention. In the description of the present invention, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0037] like Figure 1-11 As shown, the pump according to the embodiment of the present invention comprises a pump housing 1, a water distribution plate 2, a motor 3, a heating assembly 4, a bushing 5 and an impeller 6, wherein the pump housing 1 has a pump cavity 11, and the water distribution plate 2 is arranged at a first end ( Figure 2 , 3 The right end of the pump housing 1 shown in FIG. 1 ), the heating assembly 4 is disposed at the second end of the pump housing 1 ( Figure 2 , 3 The left end of the pump housing 1 shown in FIG. 1 ), namely, the water distribution plate 2, the pump housing 1 and the heating assembly 4 define a pump chamber 11. In other words, Figure 2 , 3As shown, the right end of the pump housing 1 is connected to the water dividing plate 2, and the left end of the pump housing 1 is connected to the heating component 4. The water dividing plate 2 and the heating component 4 respectively close the right end and the left end of the pump housing 1 to define a pump chamber 11 in the pump housing 1.

[0038] The pump housing 1 is provided with a water inlet and a water outlet, and both the water inlet and the water outlet are connected to the pump chamber 11. More specifically, the pump further comprises a water inlet pipe 12 and a water outlet pipe 13, the water inlet pipe 12 is connected to the pump housing 1 at the water inlet, the water outlet pipe 13 is connected to the pump housing 1 at the water outlet, and the water inlet pipe 12 is connected to the pump chamber 11 through the water inlet, and the water outlet pipe 13 is connected to the pump chamber 11 through the water outlet. External water enters the water inlet pipe through the outer port of the water inlet pipe 12 and enters the pump chamber 11 through the water inlet, and then is discharged into the water outlet pipe 13 through the water outlet and discharged through the outer port of the water outlet pipe 13.

[0039] The motor 3 includes a stator 31 and a rotor 32. The rotor 32 is arranged in the water separation plate 2. The stator 31 is located outside the water separation plate 2 and is arranged on the outer periphery of the rotor 32 to form a magnetic force. Specifically, the water separation plate 2 includes a cylinder 21 and a flange 22. The first end ( Figure 2 , 3 The right end of the cylinder 21 shown in FIG. 2 is closed, and the flange 22 extends from the second end ( Figure 2 , 3 The outer circumference of the cylinder 21 (shown as the left end of the cylinder 21) extends outwardly along the radial direction of the cylinder 21, the flange 22 is connected to the pump housing 1, the rotor 32 is arranged inside the cylinder 21, and the stator 31 surrounds the outer circumference of the cylinder 21. Further, as Figure 2 , 3 As shown, the left end of the stator 31 is connected to the flange 22 , and the right end of the stator 31 is connected to the cover 8 .

[0040] In other words, if Figure 2 , 3 As shown, the right end of the pump housing 1 is connected to the flange 22 of the water separation plate 2, the right end of the cylinder 21 is closed, the left end of the cylinder 21 is open, the rotor 32 is arranged inside the cylinder 21, that is, the motor 3 is arranged at the right end in the pump chamber 11, and the middle part of the motor 7 is provided with a motor shaft 33 extending along its axial direction and rotatable, the right end of the motor shaft 33 is inside the cylinder 21, the left end of the motor shaft 33 passes through the left end of the cylinder 21 and is connected to the impeller 6 in the pump chamber 11, and the stator 31 is arranged around the outer circumference of the cylinder 21 and is connected to the right end face of the flange 22. Specifically, a sealing member is provided between the water separation plate 2 and the first end of the pump housing 1, and the sealing member can be, for example, an O-ring, but the present invention is not limited thereto.

[0041] It can be understood that the rotor 32 is placed inside the water-dividing tray 2, and the motor 3 can be cooled by the water in the pump, thereby improving the cooling efficiency of the motor; the motor shaft 33 of the motor 3 drives the impeller 6 to rotate, so that the impeller 6 drives the water flow in the pump chamber 11 to rotate and the impeller 6 works on the water flow, so that the water flow gains energy and flows out, and at this time, the kinetic energy and pressure energy of the water flow are increased. Further, the water-dividing tray 2 also includes a cofferdam 23, which extends from the outer peripheral edge of the flange 22 along the axial direction of the cylinder 21 toward the first end ( Figure 2 , 3 The right end of the cylinder 21 shown in FIG. 1 extends, and the cofferdam 23 is connected to the first end of the pump casing 1 ( Figure 2 , 3 The cofferdam 23 is connected to the right end of the pump casing 1). It can be understood that the outer periphery of the flange 22 is the periphery of the flange 22 located at the outer end along its radial direction, and the cofferdam 23 extends from the periphery of the outer end of the flange 22 from left to right, and the cofferdam 23 is connected to the right end of the pump casing 1.

[0042] The bushing 5 is installed in the pump chamber 11 and is disposed adjacent to the heating assembly 4, so as to divide the pump chamber 11 into a water inlet chamber 111 and a water pressure chamber 112. The water inlet chamber 111 is adjacent to the heating assembly 4, and the water inlet chamber 111 and the water pressure chamber 112 are connected. It can be understood that the bushing 5 is provided with a through hole to connect the water inlet chamber 111 and the water pressure chamber 112. In other words, Figure 2 , 3 As shown, the bushing 5 is arranged at the left end of the pump chamber 11, and the pump chamber 11 is divided into an inlet chamber 111 and a pressure chamber 112 which are connected to each other, and compared with the pressure chamber 112, the inlet chamber 111 is closer to the heating assembly 4, that is, the pump chamber 11 includes the inlet chamber 111 on the left side of the bushing 5 and the pressure chamber 112 on the right side of the bushing 5. Specifically, the impeller 6 is arranged in the pressure chamber 112. Specifically, in order to improve the energy conversion efficiency of the water flow in the pump body, generally, the volume of the inlet chamber 111 is greater than the volume of the pressure chamber 112, and more specifically, the volume of the inlet chamber is 2 to 4 times the volume of the pressure chamber.

[0043] The pump according to the embodiment of the present invention can divide the pump cavity into a water inlet chamber and a water pressure chamber that are connected to each other by providing a bushing, and can be used in conjunction with an impeller as an energy conversion device for water flow, thereby increasing the kinetic energy and pressure energy of the water flow, and has a compact structure and can be suitable for occasions with limited space. By providing a generally cylindrical water dividing plate, the rotor is arranged in the water dividing plate and the stator is located outside the water dividing plate, and the motor can be cooled by water in the pump, thereby improving the cooling efficiency of the motor.

[0044] In some embodiments, Figure 2 , 4As shown in FIG. 7 , the bushing 5 has a bushing cavity 501 whose two ends are connected to the pump cavity 11. The portion of the pump cavity 11 located on the first side of the bushing 5 (the right side of the bushing 5) forms a water pressure chamber 112. The portion of the pump cavity 11 located on the second side of the bushing 5 (the left side of the bushing 5) and the bushing cavity 501 together form a water inlet chamber 111. The bushing 5 is provided with a groove 51. The groove 51 extends from the outer end surface of the first end of the bushing 5 ( Figure 2 , 4 The right end surface of the bushing 5 shown in the figure extends spirally along the axial direction of the bushing 5.

[0045] Specifically, the first end of the bushing 5 ( Figure 2 , 4 The right end of the bushing 5 shown in FIG. 5 is provided with a first hole 54, which is connected to the first end ( Figure 2 , 4 The groove 51 surrounds the outer periphery of the first hole 54, and the groove 51 is spiral. The first end of the groove 51, that is, the beginning of the spiral of the groove 51, is located at the right end surface of the bushing 5 and spirals from right to left. The second end of the groove 51, that is, the end of the spiral, is located at an interface between the left end and the right end surface of the bushing 5. Further, the radial size of the groove 51 gradually increases along the direction of spiral extension, that is, the right end surface of the bushing 5 is the place where the area of ​​the groove 51 changes the least, and the end of the spiral of the groove 51 is the place where the area of ​​the groove 51 changes the most. It is understood that the bottom surface of the groove 51 is a spiral surface. Further, the spiral surface of the groove 51 is concave inward along the axial direction of the bushing 5 to form an arc-shaped spiral surface. When the groove 51 is cut along a plane perpendicular to the axial direction of the bushing 5, the bottom surface of the groove 51 is an arc-shaped concave inward along the axial direction. It is understood that the present invention is not limited to this. For example, the bottom surface of the groove 51 can also be a plane spiral. When the groove 51 is cut along a plane perpendicular to the axial direction of the bushing 5, the bottom surface of the groove 51 is a straight line. Further, the first hole 54 is arranged on the central axis of the bushing 5. More specifically, the bushing 5 and the pump housing 1 are coaxially arranged.

[0046] The second end of the bushing 5 ( Figure 2 , 4 The left end of the bushing 5 shown in FIG. 5 is provided with an opening to communicate with the second end ( Figure 2 , 4 The left end of the bushing cavity 501 shown in FIG. 501 and the pump cavity 11. In other words, Figure 2 , 4 As shown, the left end of the bushing 5 is opened as a whole to communicate with the pump chamber 11, and the bushing chamber 501 and the pump chamber 11 on the left side of the bushing 5 together form a water inlet chamber 111 of the pump chamber 11, and a first hole 54 is opened at the right end of the bushing 5, and the first hole 54 communicates the bushing chamber 501 and the pump chamber 11, and the right side of the right end of the bushing 5 is the water pressure chamber 112, that is, the first hole 54 communicates the water inlet chamber 111 and the water pressure chamber 112.

[0047] The circumferential wall of the bushing 5 is provided with a first port 52 and a second port 53. The first port 52 is provided adjacent to the first end of the groove 51 (the starting end of the spiral of the groove 51), and the first port 52 is communicated with the bushing cavity 501. The first port 52 is also communicated with the water inlet of the pump casing 1, that is, the bushing cavity 501 and the water inlet of the pump casing 1 are communicated through the first port 52; the second port 53 is communicated with the second end of the groove 51 (the end of the spiral of the groove 51), and the second port 53 is communicated with the water outlet of the pump casing 1, that is, the end of the spiral of the groove 51 and the water outlet of the pump casing 1 are communicated through the second port 53. In other words, Figure 4-6 As shown, the first port 52 on the bushing 5 is opened on the peripheral wall of the bushing 5 and is located on the side of the right end of the adjacent groove 51 of the bushing 5, and the water inlet of the pump casing 1 is connected with the bushing cavity 501 through the first port 52; the second port 53 on the bushing 5 is opened on the peripheral wall of the bushing 5 and is connected with the left end of the groove 51, and the groove 51 is connected with the water outlet of the pump casing 1 through the second port 53.

[0048] It can be understood that external water enters the water inlet chamber 111 at the bushing cavity 501 through the water inlet pipe 12 and the water inlet of the pump casing 1 in turn, the water in the water inlet chamber 111 enters the water pressure chamber 112 through the first hole 54, and the water in the water pressure chamber 11 is discharged through the water outlet of the pump casing and the water outlet pipe 13 in turn.

[0049] It can be understood that the bushing 5 with the groove 51 is installed in the pump chamber 11, dividing the pump chamber 11 into a water inlet chamber 111 and a water pressure chamber 112. Since the groove 51 of the bushing 5 is in a spiral structure, the volume in the water pressure chamber 112 varies along the axial direction, which can increase the kinetic energy and pressure energy of the water flow when cooperating with the impeller 6; and the first port 52 of the bushing 5 is arranged near the starting end of the spiral of the groove 51, and the second port 53 of the bushing 5 is arranged at the end of the spiral of the groove 51, which can minimize the axial size of the pump while ensuring the kinetic energy and pressure energy of the water flow.

[0050] In some embodiments, the second end of the groove 51 ( Figure 4 The left end of the groove 51 shown in FIG. 5 is provided with an exhaust hole 55, and the exhaust hole 55 is connected to the water inlet chamber 111 and the water pressure chamber 112. In other words, Figure 4 , 7 As shown, the left end of the groove 51, i.e., the end of the spiral of the groove 51, is provided with an exhaust hole 55, and the exhaust hole 55 is connected to the bushing cavity 501 and the pump cavity 11 on the right side of the bushing 5, i.e., the exhaust hole 55 is connected to the water inlet chamber 111 and the water pressure chamber 112. It can be understood that by providing the exhaust hole 55 on the bushing 5, and the exhaust hole 55 is provided at the end of the spiral of the groove 51, i.e., adjacent to the second port 53 of the bushing 5, the gas in the water inlet chamber 111 can be introduced into the second port 53 and the water outlet of the pump housing 1 in sequence through the exhaust hole 55, so that the gas can be discharged through the water outlet and the outlet pipe 13, which affects the normal operation of the pump.

[0051] In some embodiments, Figure 5 As shown, a boss 56 is provided in the bushing cavity 501, and the boss 56 extends from the inner end surface of the first end of the bushing 5 (the inner end surface of the right end of the bushing 5) along the axial direction of the bushing 5. In other words, as shown in FIG. Figure 2 , 5 As shown, the boss 56 extends leftward from the end surface of the right end of the bushing 5 located in the bushing cavity 501 and does not exceed the left end of the bushing 5, that is, the left end surface of the boss 56 is located on the right side of the left end of the bushing 5.

[0052] The boss 56 is provided with a second hole 57 coaxially arranged with the first hole 54, and the second hole 57 is connected to the bushing cavity 501 and the first hole 54 respectively, and the diameter of the second hole 57 is smaller than the diameter of the first hole 54. It can be understood that the water inlet chamber 111 is connected to the water pressure chamber 112 through the second hole 57 and the first hole 54 in turn, and it can be understood that the first hole 54 and the second hole 57 form a through hole of the bushing 5 to connect the water inlet chamber 111 and the water pressure chamber 112. In the present invention, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features.

[0053] Further, at least one guide plate 58 is provided in the bushing cavity 501, and the guide plate 58 is provided between the inner wall surface of the bushing 5 and the outer peripheral surface of the boss 56. Further, two exhaust holes 55 are provided, and one of the at least one guide plate 58 is located between the two exhaust holes 55. Specifically, the exhaust hole 55 is spaced apart from the guide plate 58, that is, there is a certain distance between the exhaust hole 55 and the guide plate 58. It can be understood that the present invention is not limited to this, and there can also be only one exhaust hole 55, which is located on one side of the guide plate 58 and spaced apart from the guide plate 58; there can also be multiple exhaust holes 55, wherein a part of the exhaust holes 55 is located on one side of a guide plate 58, and another part of the exhaust holes 55 is located on the other side of the guide plate 58, that is, the one guide plate 58 separates the multiple exhaust holes 55 and divides them into two parts, and the multiple exhaust holes 55 are spaced apart from each other, and each exhaust hole 55 is spaced apart from the guide plate 58.

[0054] It can be understood that dividing the exhaust hole 55 by the guide plate 58 can improve the efficiency of gas exhaust; since the water flow entering from the water inlet generates a vortex in the water inlet chamber 111, an impact will occur when the water flows into the impeller 6 to affect the operation of the impeller 6. By providing at least one guide plate 58, the water flow flowing into the water inlet of the pump housing 1 can be prevented from generating a vortex in the water inlet chamber 111, thereby making the water flow into the impeller 6 smooth.

[0055] Furthermore, the outer wall surface of the bushing 5 is provided with a positioning column 59, the positioning column 29 extends along the axial direction of the bushing 5 and protrudes out of the bushing 5, and the inner wall of the pump housing 1 is provided with a positioning groove 14 that cooperates with the positioning column 59. In other words, Figure 2 , 4 As shown in Figures 6 and 7, the positioning column 59 extends from left to right, and the left end of the positioning column 59 is connected to the outer wall surface of the bushing 5, and the right end of the positioning column 59 is located on the right side of the right end surface of the bushing 5. It can be understood that there are one or more positioning columns 59. When the outer wall surface of the bushing 5 is provided with multiple positioning columns 59, the multiple positioning columns 59 are arranged at intervals in the circumferential direction of the bushing 5. By fitting the positioning columns 59 in the positioning grooves 14 on the inner wall of the pump housing 1, the positioning of the bushing 5 in the pump chamber 11 can be facilitated. More specifically, the bushing 5 and the pump housing 1 are coaxially arranged, and the inner wall surface of the pump housing 1 is stepped. The end of the bushing 5 can fit at the step to further achieve the axial positioning of the bushing 5.

[0056] In some embodiments, Figure 2 , 3 8-12, a mounting member 7 is provided on the outer peripheral wall of the water distribution plate 2, and the mounting member 7 extends from the second end ( Figure 2 , 3 The left end of the pump housing 1 shown) is directed toward the first end of the pump housing 1 ( Figure 2 , 3 In other words, the mounting member 7 is connected to the outer peripheral wall of the water diversion plate 2, and the mounting member 7 extends from left to right along the axial direction of the pump housing 1, and the mounting member 7 extends out of the right end of the water diversion plate 2, that is, the right end of the mounting member 7 is located on the right side of the right end of the water diversion plate 2. Specifically, the mounting member 7 is arranged on the outer peripheral wall of the cofferdam 23.

[0057] It is understood that when the pump is applied to a dishwasher, the pump may be referred to as a washing pump. Figure 8 As shown, the dishwasher includes a bottom tank 200 and a pump 100, and the pump 100 is installed on the outer wall of the bottom tank 200 through a connecting assembly 300. Specifically, the outer wall of the bottom tank 200 is formed with an extension portion 201, and the pump 100 is installed at the extension portion 201 of the outer wall of the bottom tank 200 through the connecting assembly 300. Further, the outer wall of the bottom tank 200 is provided with a tank outlet 202 and a spray inlet 203, wherein the tank outlet 202 is connected to the water inlet pipe 12 of the pump 100, and the spray inlet 203 is connected to the water outlet pipe 13 of the pump 100. It can be understood that the outer wall of the bottom tank 200 is also provided with a spray outlet 204, and the water flow pressurized by the pump 100 enters through the spray inlet 203 and is sprayed out through the spray outlet 204.

[0058] It can be understood that the mounting member 7 is included in the connecting assembly 300, that is, the connecting assembly 300 includes the mounting member 7 connected to the water distribution plate 2, and the mounting member 7 is provided with a protrusion 701 (such as Fig.11 As shown in FIG. 1 , it can be understood that the protrusion 701 protrudes outward from the outer surface of the mounting member 7. Specifically, the protrusion 701 is provided at the first end ( Figure 2 , 3 The cross section of the protrusion 701 is a right-angle trapezoid, and the cross section is formed by cutting the protrusion 701 along the extension direction of the mounting member 7 and a plane perpendicular to the outer surface of the mounting member 7. In other words, Figure 2 , 3 As shown in Figures 11, a plane extending in the left-right direction and perpendicular to the outer surface of the mounting member 7 cuts the protrusion 701, and the cross-section of the protrusion 701 is a right-angled trapezoid, and the waist where the two right angles of the right-angled trapezoid are located is located on the left side of the other waist of the right-angled trapezoid, that is, the other waist of the right-angled trapezoid is inclined toward the outer surface of the mounting member 7 in the left-right direction.

[0059] Furthermore, if Figure 8-12 As shown, the connection assembly 300 connecting the pump 100 and the bottom tank 200 also includes a connection piece 301 connected to the outer wall of the bottom tank 200. Specifically, the extension portion 201 of the bottom tank 200 is connected to the connection piece 301, and a clamping protrusion 302 is provided on the connection piece 301. It can be understood that the clamping protrusion 302 protrudes outward from the outer surface of the connection piece 301.

[0060] The connecting assembly 300 further includes a shock absorbing member 303, on which a first through slot 304 and a second through slot 305 are provided, the mounting member 7 is fitted in the first through slot 304 and the protrusion 701 abuts against the end surface of the shock absorbing member 303, and the connecting member 301 is fitted in the second through slot 305 and the clamping protrusion 302 abuts against the end surface of the shock absorbing member 303. In other words, the mounting member 7 and the connecting member 301 are connected through the shock absorbing member 303, and the pump 100 is connected to the extension portion 201 of the bottom groove 200 through the mounting member 7, the shock absorbing member 303 and the connecting member 301. It can be understood that the shape of the first through slot 304 is adapted to the shape of the mounting member 7, and the shape of the second through slot 305 is adapted to the shape of the connecting member 301.

[0061] It is understandable that the shock absorber 303 is mounted on the mounting member 7, and the protrusion 701 on the mounting member 7 can prevent the shock absorber 303 from sliding off, and the shock absorber 303 is mounted on the connecting member 301, and the clamping protrusion 302 on the connecting member 301 can prevent the shock absorber 303 from sliding off, so that the mounting member 7, the shock absorber 303 and the connecting member 301 can be connected, and the shock absorber 303 can be prevented from sliding off the mounting member 7 and the connecting member 301 during the operation of the washing pump. Moreover, it is well known in the art that the shock absorber 303 is made of rubber or elastic plastic, and the vibration generated by the washing pump can be reduced by the shock absorber 303, thereby reducing the vibration generated to the dishwasher and increasing the reliability of the washing pump.

[0062] Specifically, the first through slot 304 and the second through slot 305 of the shock absorbing member 303 extend in the same direction, that is, the two through slots extend in the same direction in the shock absorbing member 303. Figure 8 , 9 As shown, the first through slot 304 and the second through slot 305 both penetrate the shock absorbing member 303 in the left-right direction, and the first through slot 304 and the second through slot 305 are arranged at intervals in the up-down direction (vertical direction). The first end of the mounting member 7 having the protrusion 701 is connected from the second end ( Figure 8 The left end of the first through slot 304 shown in the figure) enters the first through slot 304 and passes through the first end ( Figure 8 The right end of the first through slot 304 as shown in the figure) passes through, and the plane where the waist of the protrusion 701 with a right angle is located, that is, the inner surface of the protrusion 701, abuts against the end surface of the first end of the shock absorbing member 303 (as shown in the figure). Figure 8 It can be understood that one mounting member 7 corresponds to one shock absorbing member 303.

[0063] like Fig. 9 As shown, the connecting member 301 may be generally L-shaped, for example, the connecting member 301 includes a vertical portion and a horizontal portion that are perpendicular to each other, the upper end of the vertical portion is connected to the extension portion 201, and the lower end of the vertical portion is connected to the first end of the horizontal portion (such as Figure 8 , 9 The clamping protrusion 302 is provided at the second end of the transverse portion (as shown in FIG. Figure 8 , 9 The outer surface of the transverse portion (shown as the left end of the transverse portion) is formed by the vertical direction and the transverse direction is perpendicular to the axial direction (left-right direction) and the vertical direction. The protrusion 302 is in the shape of a barb, and the second end of the transverse portion is connected to the first end of the shock absorbing member 303 (shown as Figure 8 , 9 The right end of the shock absorbing member 303 as shown in FIG. 304 extends into the shock absorbing member 303 and extends from the second end of the shock absorbing member 303 (as shown in FIG. Figure 8 , 9 The left end of the shock absorbing member 303 as shown in FIG. 1 is extended, and the inner surface of the clamping protrusion 302 is against the end surface of the second end of the shock absorbing member 303 (as shown in FIG. Figure 1 As shown in FIG. 3 , the damping member 303 is disposed on the left end surface thereof. Figure 8 , 9 As shown, the connecting member 301 is inserted from the right end of the shock absorbing member 303, and the mounting member 7 is inserted from the left end of the shock absorbing member 303. Through the combination of the substantially L-shaped connecting member 301 and the mounting member 7, the washing pump can be suspended or side-suspended.

[0064] In some other optional embodiments, such as Fig.10 , 12As shown, the extension directions of the first through slot 304 and the second through slot 305 in the shock absorbing member 303 may be perpendicular to each other. Fig.12 As shown, the first through groove 304 penetrates the shock absorber 303 in the left-right direction, and the second through groove 305 penetrates the shock absorber 303 in the front-back direction. Here, the front-back direction is defined as a direction perpendicular to the axial direction (left-right direction) and the vertical direction, that is, the horizontal direction, and the first through groove 304 and the second through groove 305 are arranged at intervals.

[0065] The first end of the mounting member 7 having the protrusion 701 is connected to the second end ( Fig.10 , 12 The left end of the first through slot 304 shown in the figure) enters the first through slot 304 and passes through the first end ( Fig.10 , 12 The right end of the first through slot 304 as shown in the figure) passes through, and the plane where the waist of the protrusion 701 with a right angle is located, that is, the inner surface of the protrusion 701, abuts against the end surface of the first end of the shock absorbing member 303 (as shown in the figure). Fig.10 , 12 It can be understood that one mounting member 7 corresponds to one shock absorbing member 303.

[0066] The connecting member 301 includes a first straight portion 3011, two second straight portions 3012 and two protrusions, wherein the protrusions form the locking protrusions 302 of the connecting member 301, wherein a protrusion is respectively provided at both ends of the first straight portion 3011, each protrusion is connected to a second straight portion 3012, and the first straight portion 3011 and the second straight portion 3012 are arranged parallel to each other. In other words, Fig.12 As shown, the front end and the rear end of the first straight portion 3011 are respectively provided with protrusions extending upward from the upper surface of the first straight portion 3011, and the upper end of each protrusion is connected to a second straight portion 3012 arranged parallel to the first straight portion 3011. At this time, one connecting member 301 corresponds to two shock absorbing members 303, which can be understood to also correspond to two mounting members 7, and the two shock absorbing members 303 are spaced and arranged opposite to each other, as shown in FIG. Fig.10 , 12As shown, the two shock absorbing members 303 are spaced apart and arranged opposite to each other in the front-to-back direction, the first straight portion 3011 passes through the second through slots 305 on the two shock absorbing members 303 in sequence, the protrusion at the front end of the first straight portion 3011 abuts against the front end surface of one shock absorbing member 303, and the second straight portion 3012 at the front end of the first straight portion 3011 is located in front of the one shock absorbing member 303; the protrusion at the rear end of the first straight portion 3011 abuts against the rear end surface of the other shock absorbing member 303, and the second straight portion 3012 at the rear end of the first straight portion 3011 is located behind the other shock absorbing member 303. It can be understood that the second straight portion 3012 is provided with a mounting hole so as to be mounted at the extension portion 201 of the bottom groove 200 through the mounting hole.

[0067] It is understandable that if Fig.10 , 12 As shown, the mounting member 7 is inserted from the left end of the shock absorber 303, and the connecting member 301 is inserted from the front end of the shock absorber 303 and passes through the two shock absorbers 303. By arranging two shock absorbers 303 arranged opposite to each other in the front-to-back direction at the bottom of the pump, and by using the connecting member 301 having the first straight portion 3011 and the second straight portion 3012, the base-type installation of the washing pump can be achieved.

[0068] It is understandable that the mounting member 7 can be one or more, wherein when there are multiple mounting members 7, the multiple mounting members 7 are evenly spaced and arranged in the circumferential direction of the water distribution plate 2. Specifically, the mounting members 7 can be set to 4, and the 4 mounting members are arranged in a square shape. To achieve the installation of the washing pump, at least one of the multiple mounting members 7 can be provided with a corresponding shock absorber 303, and the specific mounting member 7 on which the shock absorber 303 is matched and the number of the shock absorbers 303, that is, which one or which of the multiple mounting members 7 are provided with the shock absorber 303 can be selected and determined according to actual needs. It is understandable that by selecting the number and installation position of the shock absorber 303 and the form of the connecting member 301, different forms of installation of the washing pump can be achieved, such as hanging type, base type, and side hanging type installation, that is, by setting multiple mounting members 7, the connection structure of the pump can be flexible, and the versatility of the pump installation is improved. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0069] In some embodiments, Fig.11As shown, the mounting member 7 includes a first straight section 71, an arc section 72, and a second straight section 73, wherein the first straight section 71 and the second straight section 73 are arranged perpendicular to each other, and the arc section 72 connects the first straight section 71 and the second straight section 73. In other words, each mounting member 7 includes a first straight section 71 and a second straight section 73 that are substantially perpendicular to each other, and the first straight section 71 and the second straight section 73 are connected by the arc section 72. More specifically, the first straight section 71, the arc section 72, and the second straight section 73 are integrally formed. Further, as Fig.10 , 11 As shown, the outer surface of the right end of the first straight section 71 is provided with a protrusion 701, and the cross section formed by the protrusion 701 cut by a plane extending in the left-right direction and perpendicular to the upper surface of the first straight section 71 is a right-angled trapezoid. It can be understood that the cut plane is the plane where the left-right direction and the up-down direction are located. The outer surface of the second straight section 73 is also provided with a protrusion 701, and the cross section formed by the protrusion 701 cut by a plane extending in the left-right direction and perpendicular to the front surface of the second straight section 73 is a right-angled trapezoid. It can be understood that the cut plane is the plane where the left-right direction and the front-back direction are located. Further, the first straight section 71 and the second straight section 73 are both generally L-shaped, and the long side of the first straight section 71 is connected to the long side of the second straight section 73 through the arc section 72.

[0070] It is understandable that by designing the mounting member 7 to be substantially at a right angle, the forces in all directions applied thereto can be better transmitted to the shock absorbing member 303. When a shock absorbing member 303 is provided on each of the two mounting members 7 at the upper end of the washing pump, the washing pump can be mounted with two mounting members 7, so that the force applied to the washing pump during operation can be more uniform, thereby improving stability.

[0071] In some embodiments, the heating assembly 4 includes a heat conducting plate 41 and a heating element 42. The heat conducting plate 41 is connected to the second end ( Figure 2 , 3 In other words, the heat conducting plate 41 is connected to the left end of the pump housing 1, and the heat conducting plate 41 and the water dividing plate 2 at the right end of the pump housing 1 together define the pump chamber 11. Further, the heat conducting plate 41 is made of ceramic, which can play the role of insulation and heat conduction. Furthermore, a sealing member is provided between the heat conducting plate 41 and the pump housing 1, and the sealing member can be an O-ring. It can be understood that the present invention is not limited to this.

[0072] Specifically, the heating element 42 can be a heating tube (such as Figure 3 , 15 -16), thick film heating element (such as Fig.13 as shown) or thin film heating element (as Fig.14 as shown).

[0073] Among them, Fig.13 As shown, the heating element 42 is a thick film heating element, which is composed of a first insulating medium layer, a resistance circuit and a second insulating medium layer. The first insulating medium layer is arranged on the outer end surface of the heat conducting disk 41, the resistance circuit is arranged on the first insulating medium layer, and the second insulating medium layer is arranged on the resistance circuit. The thick film heating element adopts a thick film screen printing process, takes the heat conducting disk 41 as the substrate, and is directly sintered on the heat conducting disk 41. The heat conducting disk 41 is a stainless steel disk and is made of food grade 304 stainless steel. Specifically, an insulating medium slurry is printed on the outer end surface of the heat conducting disk 41, and a first insulating medium layer is formed after sintering; then, the resistance slurry used for heating is printed on the first insulating medium layer, and a heating resistance circuit is formed after sintering; finally, the printed insulating medium slurry is covered on the resistance circuit, and a second insulating medium layer is formed after sintering. It can be understood that the thick film heating element can cover the entire outer end surface of the heat conducting disk 41. The thickness of thick film heating elements is generally less than 1mm. It has the advantages of being small, light, and beautiful in appearance. It also has high power density, fast heating speed, and uniform heating. Due to the coverage of the dielectric layer, its safety performance is stable and its service life can reach 5 to 10 years.

[0074] like Fig.14 As shown, the heating element 42 is a thin film heating element, which is formed by printing a heating resistor paste on a heat-conducting disk 41, and the heating resistor paste and the heat-conducting disk 41 are co-fired, wherein the heat-conducting disk 41 is a ceramic heat-conducting disk. Specifically, a high-melting-point metal heating resistor paste such as tungsten, molybdenum, and manganese is printed on the outer end surface of the ceramic heat-conducting disk 41 according to the requirements of the heating circuit design, and is co-fired into one at a high temperature of 1500°C to 1600°C. It can be understood that the thin film heating element can cover the entire outer end surface of the heat-conducting disk 41. The thin film heating element has the advantages of corrosion resistance, high temperature resistance, long life, high efficiency and energy saving, uniform heating, good thermal conductivity, fast thermal compensation speed, etc., and does not contain harmful substances such as lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers, etc., and meets the environmental protection requirements such as EU RoHS.

[0075] It can be understood that the heat conducting plate 41 is arranged adjacent to the water inlet chamber 111, and the thin film heating element or thick film heating element and the liquid in the water inlet chamber 111 are separated on both sides of the heat conducting plate 41, and heat is transferred through the heat conducting plate 41, thereby improving the safety of power supply. In addition, the use of thin film heating elements and thick film heating elements to replace traditional electric heating tubes can simplify the manufacturing process, reduce costs, and improve the uniformity of heating.

[0076] like Figure 2 , 3As shown, the heating element 42 is a heating tube, which is arranged on the outer end surface of the heat conducting plate 41. Specifically, the heat conducting plate 41 has a recessed portion, the opening of which faces outward, and the recessed portion is annular and extends along the circumference of the heat conducting plate 41. The heating tube is embedded in the annular recessed portion of the heat conducting plate 41, and the fluid in the pump chamber 11 is heated by the heating tube on the outer end surface of the heat conducting plate 41. In other words, Figure 2 As shown, the heat conducting plate 41 has a recessed portion that is recessed to the right, and the recessed portion is arranged along a circumference of the heat conducting plate 41 to form a ring shape, and the heating tube is arranged in the ring-shaped recessed portion.

[0077] It is understandable that the arrangement of the heating tube is not limited to this. Figure 15-16 As shown, the heating pipe can also be immersed in the water inlet chamber 111, and the two ends of the heating pipe respectively pass through the heat conducting plate 41 from the water inlet chamber 111. In other words, most of the heating pipe is immersed in the water inlet chamber 111, and the two ends of the heating pipe respectively extend from the water inlet chamber 111 to the outside of the heat conducting plate 41. It can be understood that placing the heating pipe in the water inlet chamber 111 in direct contact with water improves the heat transfer efficiency. In addition, the pump chamber 11 is divided into the water inlet chamber 111 and the water pressure chamber 112 by the bushing 5, and the impeller 6 is located in the water pressure chamber 112, which can reduce the impact of the heating pipe on the water function caused by the placement of the heating pipe in the pump chamber 11. It can be understood that the arrangement of the heating pipe is not limited to this. For example, the heating pipe can also be embedded in the heat conducting plate. In this embodiment, the method of immersing the heating pipe in the water inlet chamber 111 is adopted, and relative to the method of embedding the heating pipe in the heat conducting plate 41, it can simplify the manufacturing process and save manufacturing costs.

[0078] Specifically, Fig.16 , 17 As shown, the heating assembly 4 also includes a mounting component 46 for mounting the heating pipe, and the mounting component 46 includes a first flange 461, a second flange 462, and a fastener 463. The first flange 461 matches with the outer end surface of the heat-conducting plate 41, and the second flange 462 matches with the inner end surface of the heat-conducting plate 41. The fastener 463 sequentially connects the first flange 461, the heat-conducting plate 41, and the second flange 462. The two ends of the heating pipe respectively pass through the second flange 462, the heat-conducting plate 41, and the first flange 461 in sequence and extend out of the outer end surface of the first flange 461. Further, the mounting component 46 also includes a rubber ring 464. A hole that matches the rubber ring 464 is provided in the heat-conducting plate 41, and the rubber ring 464 is located between the first flange 461 and the second flange 462.

[0079] In other words, if Fig.16 , 17As shown, the heat conducting plate 41 is provided with a hole, and the rubber ring 464 is installed in the hole. The left end of the rubber ring 464 is provided with a first flange 461 matched with the left end face of the heat conducting plate 41, and the right end of the rubber ring 464 is provided with a second flange 462 matched with the right end face of the heat conducting plate 41. The fastener 463 can be, for example, a bolt 4631 and a nut 4632 matched with the bolt 4631. The bolt passes through the first flange 461, the heat conducting plate 41 and the second flange 462 from left to right in sequence and connects the first flange 461, the heat conducting plate 41 and the second flange 462, and the nut is matched with the bolt and contacts with the left end face of the heat conducting plate 41. It can be understood that the heat conducting plate 41 is provided with two holes with rubber rings 464 installed, so that the two ends of the heating pipe pass through the heat conducting plate 41 respectively.

[0080] Furthermore, if Figure 2 , 3 As shown in 13-16, the heating component 4 also includes a thermostat 43 and a fuse 44, which are both arranged on the outer end surface of the heat-conducting plate 1, and the thermostat 43 and the fuse 44 are both connected in series with the heating element 42 through a heat-conducting rod 45. In other words, the left end surface of the heat-conducting plate 1 is also provided with a thermostat 43, a fuse 44 and a heat-conducting rod 45, wherein the thermostat 43 is connected in series with the heating element 42 through a heat-conducting rod 45, and the fuse 44 is connected in series with the heating element 42 through a heat-conducting rod 45. Specifically, the thermostat and the fuse are both fixed to the outer end surface of the heat-conducting plate 41 by a fixing part, and the fixing part can be a bolt and a nut, and the present invention is not limited thereto. It can be understood that by providing the thermostat 43 and the fuse 44 on the heat-conducting plate 41, the temperature can be monitored in real time, thereby improving the safety performance. Furthermore, the thermostat 43 and the fuse 44 are arranged in parallel, and the heat conducting rod 45 connecting the thermostat 43 and the heating tube and the heat conducting rod 45 connecting the fuse 44 and the heating tube are arranged substantially parallel to each other.

[0081] In some embodiments, Figure 2 , 3 As shown in Figures 13-15, the water inlet and the water outlet are both arranged on the peripheral wall of the pump housing 1, and the water inlet and the water outlet are located on the same side of the pump housing 1. Specifically, the positions of the water inlet and the water outlet are staggered, for example, the water inlet and the water outlet are spaced apart in the up-down direction, or the water inlet and the water outlet are spaced apart in the up-down direction and in the left-right direction, so as to leave space for the user to install the pipe and better reduce the axial dimension of the pump housing 1. In addition, the positions of the water inlet and the water outlet of the present invention are not limited thereto, and the water inlet and the water outlet can be oriented in the same direction as described above, or in different directions, for example Fig.18As shown, the water inlet and the water outlet are located on opposite sides of the pump housing 1, that is, they are located on different sides of the pump housing 1, and the water inlet and the water outlet are spaced apart in the left-right direction. It is understandable that the positions of the water inlet and the water outlet on the peripheral wall of the pump housing 1 can be determined by those skilled in the art according to actual needs.

[0082] It can be understood that the water inlet and the water outlet are arranged on the side of the pump housing 1. Compared with the existing top-suction washing pump, the water inlet and the heat conduction plate 41 are separated, so that the heating area of ​​the heat conduction plate 41 is no longer limited by the size of the water inlet, which greatly increases the heating area, thereby improving the heating performance of the entire heating pump.

[0083] Please refer to the following Figure 1-18 A pump according to a specific embodiment of the present invention is described.

[0084] like Figure 1-7 As shown, the pump according to the embodiment of the present invention comprises a pump housing 1, a water separation plate 2, a motor 3, a heating assembly 4, a bushing 5 and an impeller 6, wherein the right end of the pump housing 1 is connected to the water separation plate 2, the left end of the pump housing 1 is connected to the heating assembly 4, the water separation plate 2 and the heating assembly 4 respectively seal the right end and the left end of the pump housing 1 to define a pump cavity 11 in the pump housing 1. A water inlet and a water outlet are provided on the peripheral wall of the pump housing 1, as shown in FIG. Figure 1 , 7 As shown, the water inlet and the water outlet are arranged on the same side of the pump housing 1, and the water inlet and the water outlet are spaced apart in the up and down directions. In addition, the water inlet and the water outlet can also be arranged on opposite sides of the pump housing 1, such as Fig.18 As shown, the water inlet and the water outlet are spaced apart in the left-right direction.

[0085] The water inlet of the pump housing 1 is connected to a water inlet pipe 12, and the water outlet of the pump housing 2 is connected to a water outlet pipe 13, so that external water enters the water inlet pipe through the outer port of the water inlet pipe 12 and enters the pump chamber 11 through the water inlet, and then is discharged into the water outlet pipe 13 through the water outlet and discharged through the outer port of the water outlet pipe 13.

[0086] The water distribution plate 2 includes a cylinder 21, a flange 22 and a cofferdam 23. The flange 22 extends outward from the outer periphery of the left end of the cylinder 21 along the radial direction of the cylinder 21. The cofferdam 23 extends from the outer periphery of the flange 22 along the axial direction of the cylinder 21 toward the right end of the cylinder 21. The cofferdam 23 is connected to the right end of the pump casing 1, and an O-ring is provided between the flange 22 and the pump casing 1.

[0087] The motor 3 includes a stator 31 and a rotor 32, and the motor 3 is arranged at the right end of the pump chamber 11. The elbow of the motor 7 is provided with a motor shaft 33 extending along its axial direction and being rotatable. The right end of the motor shaft 33 and the rotor 32 are arranged inside the cylinder 21. The left end of the cylinder 21 is open, and the right end of the cylinder 21 is closed. The left end of the motor shaft 33 passes through the left end of the cylinder 21 and is connected to the impeller 6 in the pump chamber 11. The stator 31 surrounds the outer circumference of the cylinder 21, and the left end of the stator 31 is connected to the right end face of the flange 22. The right end of the stator 31 is connected to the cover 8. It can be understood that the stator 31 surrounds the outer circumference of the rotor 32 to form a magnetic force.

[0088] The heating assembly 4 includes a heat conducting plate 41, a heating element 42, a thermostat 43, a fuse 44 and a heat conducting rod 45. The heat conducting plate 41 is connected to the left end of the pump casing 1, and the heat conducting plate 41, the pump casing 1 and the water dividing plate 2 at the right end of the pump casing 1 together define a pump cavity 11. The material of the heat conducting plate 41 is ceramic, which can play a role in insulation and heat conduction. An O-ring is provided between the heat conducting plate 41 and the pump casing 1.

[0089] The heating element 42 is connected to the heat conducting plate 41, and the heating element 42 can be a heating tube (such as Figure 3 , 15 -17), thick film heating element (such as Fig.13 as shown) or thin film heating element (as Fig.14 As shown). The left end surface of the heat conducting plate 1 is also provided with a thermostat 43, a fuse 44 and a heat conducting rod 45, wherein the thermostat 43 is connected in series with the heating element 42 via a heat conducting rod 45, and the fuse 44 is connected in series with the heating element 42 via a heat conducting rod 45. By providing the thermostat 43 and the fuse 44 on the heat conducting plate 41, the temperature can be monitored in real time, thereby improving the safety performance. The heat conducting rod 45 connecting the thermostat 43 and the heating tube and the heat conducting rod 45 connecting the fuse 44 and the heating tube are arranged substantially parallel to each other.

[0090] The heating element 41 may be a thick film heating element, such as Fig.13 As shown, the thick film heating element adopts the thick film screen printing process, takes the heat conducting plate 41 as the substrate, and is directly sintered on the heat conducting plate 41. The heat conducting plate 41 is a stainless steel plate, and is made of food grade 304 stainless steel. Specifically, the insulating medium slurry is printed on the outer end surface of the heat conducting plate 41, and the first insulating medium layer is formed after sintering; then the resistance slurry used for heating is printed on the first insulating medium layer, and the heating resistance circuit is formed after sintering; finally, the printed insulating medium slurry is covered on the resistance circuit, and the second insulating medium layer is formed after sintering.

[0091] The heating element 41 may also be a thin film heating element, such as Fig.14As shown, the thin film heating element is formed by printing a heating resistor paste on a heat-conducting disk 41, and the heating resistor paste and the heat-conducting disk 41 are co-fired, wherein the heat-conducting disk 41 is a ceramic heat-conducting disk. Specifically, a high-melting-point metal heating resistor paste such as tungsten, molybdenum, and manganese is printed on the outer end surface of the ceramic heat-conducting disk 41 according to the requirements of the heating circuit design, and is co-fired into one at a high temperature of 1500°C to 1600°C. It can be understood that the heat-conducting disk 41 is arranged adjacent to the water inlet chamber 111, and the thin film heating element or the thick film heating element and the liquid in the water inlet chamber 111 are separated on both sides of the heat-conducting disk 41, and heat is transferred through the heat-conducting disk 41, thereby improving the safety of power-on. In addition, the use of thin film heating elements and thick film heating elements to replace traditional electric heating tubes can simplify the manufacturing process, reduce costs, and improve the uniformity of heating.

[0092] In addition, the heating element 41 can also be a heating tube, such as Figure 2 , 3 As shown, the heat conducting plate 41 has a recessed portion that is concave to the right, and the recessed portion is arranged along a circle of the heat conducting plate 41 to form a ring shape. The heating tube is arranged in the ring-shaped recessed portion, and the fluid in the pump chamber 11 is heated by the heating tube on the outer end surface of the heat conducting plate 41.

[0093] The heating tube can also be set as follows Figure 15-17 As shown, most of the heating tube is immersed in the water inlet chamber 111, and both ends of the heating tube extend from the water inlet chamber 111 to the outside of the heat conducting plate 41. It can be understood that placing the heating tube in the water inlet chamber 111 to directly contact with water improves the heat transfer efficiency. At this time, the heating assembly 4 also includes an installation component 46 for installing the heating tube, and the installation component 46 includes a first flange 461, a second flange 462, a fastener 463 and a rubber ring 464. Two holes are provided on the heat conducting plate 41, and a rubber ring 464 is installed in each hole. The left end of the rubber ring 464 is provided with a first flange 461 that matches the left end surface of the heat conducting plate 41, and the right end of the rubber ring 464 is provided with a second flange 462 that matches the right end surface of the heat conducting plate 41. The bolts pass through the first flange 461, the heat conducting plate 41 and the second flange 462 from left to right in turn and connect the first flange 461, the heat conducting plate 41 and the second flange 462, and the nut is matched on the bolt and contacts the left end surface of the heat conducting plate 41. The bolt 4631 and the nut 4632 are combined into the fastener 463.

[0094] The bushing 5 is installed in the pump chamber 11 and is arranged adjacent to the heat conducting plate 41. The bushing 5 and the pump housing 1 are arranged coaxially. The bushing 5 can divide the pump chamber 11 into a water inlet chamber 111 on the left side of the bushing 5 and a water pressure chamber 112 on the right side of the bushing 5. A through hole is provided on the bushing 5 to connect the water inlet chamber 111 and the water pressure chamber 112.

[0095] The bushing 5 has a bushing cavity 501. The right end of the bushing 5 is provided with a first hole 54 extending from the center of the right end face along the axial direction of the bushing 5. The right end of the bushing 5 is provided with a groove 51. The groove 51 spirally extends from the right end face of the bushing 5 along the axial direction of the bushing and surrounds the outer periphery of the first hole 54. The starting end of the spiral of the groove 51 is located at the right end face of the bushing 5. The end of the spiral of the groove 51 is located at an interface between the left end and the right end face of the bushing 5. The radial size of the groove 51 gradually increases along the direction of spiral extension. The groove 51 is cut along a plane perpendicular to the axial direction of the bushing 5. The bottom surface of the groove 51 is an arc-shaped concave inward along the axial direction. Two exhaust holes 55 connecting the water inlet chamber 111 and the water pressure chamber 112 are provided at the end of the spiral of the groove 51, and the exhaust hole 55 is arranged adjacent to the second port 53 of the bushing 5 so that the gas can be discharged through the water outlet and the water outlet pipe 13, which is beneficial to the cooling in the pump.

[0096] The left end of the bushing 5 is opened as a whole so that the left end of the bushing cavity 501 is connected to the pump cavity 11, and the bushing cavity 501 and the part of the pump cavity 11 located on the left side of the bushing 5 together form a water inlet chamber 111, and the part of the pump cavity 11 located on the right side of the bushing 5 forms a water pressure chamber 112; a boss 56 is provided in the bushing cavity 501, and the boss 56 extends to the left from the end surface of the right end of the bushing 5 located in the bushing cavity 501 and does not exceed the left end of the bushing 5, and the boss 56 is provided with a second hole 57 coaxially arranged with the first hole 54, and the diameter of the second hole 57 is smaller than the diameter of the first hole 54, and the second hole 57 is respectively connected with the bushing cavity 501 and the first hole 54, thereby, the first hole 54 and the second hole 57 form a through hole of the bushing 5 to connect the water inlet chamber 111 and the water pressure chamber 112.

[0097] Two guide plates 58 are arranged in the bushing cavity 501 at intervals in the circumferential direction of the boss 56. The guide plates 58 are arranged between the inner wall surface of the bushing 5 and the outer circumferential surface of the boss 56. One of the guide plates 58 is located between the two exhaust holes 55, and the angle between the other guide plate 58 and the guide plate 58 is 160° to 200°.

[0098] A first port 52 and a second port 53 are provided on the peripheral wall of the bushing 5, wherein the first port 52 is arranged adjacent to the starting end of the spiral of the groove 51, the first port 52 is communicated with the bushing cavity 501, and the first port 52 is also communicated with the water inlet of the pump casing 1, that is, the bushing cavity 501 and the water inlet of the pump casing 1 are connected through the first port 52; the second port 53 is communicated with the end of the spiral of the groove 51, and the second port 53 is communicated with the water outlet of the pump casing 1, that is, the end of the spiral of the groove 51 and the water outlet of the pump casing 1 are connected through the second port 53.

[0099] The outer wall surface of the bushing 5 is provided with two positioning columns 59 arranged at intervals along the circumference of the bushing 5. The positioning columns 29 extend along the axial direction of the bushing 5 and extend out of the bushing 5. The inner wall of the pump housing 1 is provided with a positioning groove 14 that cooperates with the positioning columns 59. The inner wall surface of the pump housing 1 is stepped, and the end of the bushing 5 can be matched at the step to further realize the axial positioning of the bushing 5.

[0100] The mounting member 7 is connected to the outer peripheral wall of the cofferdam 23, and the mounting member 7 extends from left to right along the axial direction of the pump housing 1, and the mounting member 7 extends out of the right end of the cofferdam 23, that is, the right end of the mounting member 7 is located on the right side of the right end of the cofferdam 23. There are four mounting members 7, and the four mounting members 7 are arranged in a square on the outer peripheral wall of the cofferdam 23, wherein two are arranged at the upper end of the cofferdam 23, and two are arranged at the lower end of the cofferdam 23. The mounting member 7 includes a first straight section 71, an arc section 72, and a second straight section 73, wherein the first straight section 71 and the second straight section 73 are arranged perpendicular to each other, and the first straight section 71 and the second straight section 73 are both substantially L-shaped, and the long side of the first straight section 71 is connected to the long side of the second straight section 73 through the arc section 72, and the first straight section 71, the arc section 72, and the second straight section 73 are integrally formed.

[0101] A protrusion 701 is provided on the outer surface of the right end of the first straight section 71, and a protrusion 701 is also provided on the outer surface of the second straight section 73. When the protrusion 701 is cut along a plane perpendicular to the upper surface of the mounting member 7, the cross section of the protrusion 701 is a right-angled trapezoid, and the waist where the two right angles of the right-angled trapezoid are located is located on the left side of the other waist of the right-angled trapezoid, that is, the other waist of the right-angled trapezoid is inclined toward the outer surface of the mounting member 7 in the left-right direction.

[0102] It is understood that when the pump is applied to a dishwasher, the pump may be referred to as a washing pump. Figure 8 As shown, the dishwasher includes a bottom tank 200 and a pump 100, the pump 100 is installed on the outer wall of the bottom tank 200 through a connecting assembly 300, and the mounting member 7 can be regarded as a part of the connecting assembly 300, the outer wall of the bottom tank 200 is formed with an extension portion 201, and the outer wall of the bottom tank 200 is provided with a tank outlet 202 and a spray inlet 203, wherein the tank outlet 202 is connected to the water inlet pipe 12 of the pump 100, and the spray inlet 203 is connected to the water outlet pipe 13 of the pump 100.

[0103] The connection assembly 300 further includes a connection member 301 and a shock absorbing member 303. The connection member 301 is connected to the extension portion 201 and is provided with a clamping protrusion 302 protruding outward from the outer surface of the connection member 301. The shock absorbing member 303 is provided with a first through groove 304 and a second through groove 305. The mounting member 7 is fitted in the first through groove 304 and the protrusion 701 abuts against the end surface of the shock absorbing member 303. The connection member 301 is fitted in the second through groove 305 and the clamping protrusion 302 abuts against the end surface of the shock absorbing member 303, so that the pump 100 is connected to the extension portion 201 of the bottom tank 200 through the mounting member 7, the shock absorbing member 303 and the connection member 301.

[0104] Among them, Figure 8 , 9 As shown, the first through slot 304 and the second through slot 305 both penetrate the shock absorbing member 303 in the left-right direction, and the first through slot 304 and the second through slot 305 are arranged at intervals in the up-down direction (vertical direction). The left end of the mounting member 7 with the protrusion 701 enters the first through slot 304 from the left end of the first through slot 304 and passes out from the right end of the first through slot 304, and the plane where the right-angle waist of the protrusion 701 is located, that is, the inner surface of the protrusion 701, abuts against the right end surface of the shock absorbing member 303. It can be understood that since the mounting member 7 is generally at a right angle and has an arc transition in the middle, the shape of the first through slot 304 is also adapted thereto.

[0105] The two mounting members 7 at the upper end of the cofferdam 23 are each equipped with a shock absorbing member 303 , and the extended portion of the bottom trough 200 is provided with two connecting members 301 spaced apart in the front-to-back direction, and each connecting member 301 is equipped with a shock absorbing member 303 that cooperates with the mounting member 7 .

[0106] The connecting member 301 includes a vertical portion and a horizontal portion which are arranged perpendicular to each other. The upper end of the vertical portion is connected to the extension portion 201, and the lower end of the vertical portion is connected to the right end of the horizontal portion. The convex 302 is arranged on the outer surface of the left end of the horizontal portion. The convex 302 is in the shape of a barb. The left end of the horizontal portion of each connecting member 301 extends from the right end of the corresponding shock absorbing member 303 into the second through slot 305 of the shock absorbing member 303 and extends from the left end of the second through slot 305, and the inner surface of the convex 302 abuts against the left end surface of the shock absorbing member 303. The connecting member 301 penetrates from the right end of the second through slot 305, and the mounting member 7 penetrates from the left end of the second through slot 305. The washing pump can be suspended or side-suspended by combining the substantially L-shaped connecting member 301 and the mounting member 7. It can be understood that the shapes of the second through slot 305 and the connecting member 301 are adapted.

[0107] In addition, the extending directions of the first through slot 304 and the second through slot 305 in the shock absorbing member 303 may also be perpendicular to each other. Fig.12As shown, the first through groove 304 penetrates the shock absorber 303 in the left-right direction, and the second through groove 305 penetrates the shock absorber 303 in the front-back direction. Here, the front-back direction is defined as a direction perpendicular to the axial direction (left-right direction) and the vertical direction, that is, the horizontal direction, and the first through groove 304 and the second through groove 305 are arranged at intervals.

[0108] Each of the two mounting members 7 at the lower end of the cofferdam 23 is equipped with a shock-absorbing member 303, that is, the two shock-absorbing members 303 are spaced apart in the front-to-back direction, and the right end of each mounting member 7 enters the first through groove 304 from the left end of the first through groove 304 of the corresponding shock-absorbing member 303 and passes through the right end of the first through groove 304, and the plane where the right-angled waist of the protrusion 701 is located, that is, the inner surface of the protrusion 701, abuts against the right end face of the shock-absorbing member 303.

[0109] The connecting member 301 includes a first straight portion 3011, two second straight portions 3012 and two protrusions, wherein the protrusions form a locking protrusion 302 of the connecting member 301, wherein a protrusion is respectively provided at both ends of the first straight portion 3011, each protrusion is connected to a second straight portion 3012, and the first straight portion 3011 and the second straight portion 3012 are arranged parallel to each other. The first straight portion 3011 sequentially passes through the second through slots 305 on the two shock absorbers 303 spaced apart in the front-to-back direction, the protrusion at the front end of the first straight portion 3011 abuts against the front end face of one shock absorber 303, and the second straight portion 3012 at the front end of the first straight portion 3011 is located in front of the one shock absorber 303; the protrusion at the rear end of the first straight portion 3011 abuts against the rear end face of the other shock absorber 303, and the second straight portion 3012 at the rear end of the first straight portion 3011 is located behind the other shock absorber 303, so that the two shock absorbers 303 are connected through the connecting member 301, and the base-type installation of the washing pump can be realized through the connecting member 301 having the first straight portion 3011 and the second straight portion 3012. Specifically, the second straight portion 3012 is provided with a mounting hole, through which the connecting member 301 can be installed at the extension portion 201 of the bottom groove 200, so as to realize the installation of the washing pump.

[0110] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0111] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A pump, characterized in that: include: A pump housing, the pump housing having a pump cavity, the pump housing being provided with a water inlet and a water outlet both communicating with the pump cavity; a motor, the motor being arranged at a first end of the pump housing; A heating assembly, the heating assembly comprising a heat conducting plate and a heating tube connected to the heat conducting plate, the heat conducting plate being arranged at the second end of the pump housing; A bushing, which is installed in the pump chamber and disposed adjacent to the heating assembly, and is used to divide the pump chamber into a water inlet chamber and a water pressure chamber, wherein the water inlet chamber and the water pressure chamber are in communication, a portion of the heating pipe is disposed in the water inlet chamber, and both ends of the heating pipe respectively pass through the heat conducting plate from the water inlet chamber; The bushing is provided with a groove, the groove spirally extends from the outer end surface of the first end of the bushing along the axial direction of the bushing, the radial dimension of the groove gradually increases along the direction of spiral extension, the bottom surface of the groove is a curved surface concave inwardly along the axial direction of the bushing, and the bushing and the pump housing are coaxially arranged; An impeller is arranged in the water pressure chamber and connected to the motor.

2. The pump according to claim 1, characterized in that The heating assembly also includes a mounting component for connecting the heating tube and the heat conducting plate.

3. The pump according to claim 2, characterized in that The mounting component includes a first flange, a second flange and a fastener, the first flange cooperates with the outer end surface of the heat-conducting plate, the second flange cooperates with the inner end surface of the heat-conducting plate, the fastener sequentially connects the first flange, the heat-conducting plate and the second flange, and both ends of the heating tube respectively pass through the second flange, the heat-conducting plate and the first flange in sequence and extend out of the outer end surface of the first flange.

4. The pump according to claim 3, characterized in that The mounting component further comprises a rubber ring. A hole cooperating with the rubber ring is arranged in the heat conducting plate. The rubber ring is located between the first flange and the second flange.

5. The pump according to claim 1, characterized in that The heating component also includes a temperature controller and a fuse, and the temperature controller and the fuse are both arranged on the outer end surface of the heat conducting plate.

6. The pump according to claim 5, characterized in that The heating assembly also includes a heat-conducting rod, through which the thermostat and the fuse are connected in series with the heating tube, the thermostat and the fuse are arranged in parallel, and the heat-conducting rod connecting the thermostat and the heating tube and the heat-conducting rod connecting the fuse and the heating tube are arranged substantially parallel to each other.

7. A pump according to any one of claims 1 to 6, characterized in that The water inlet and the water outlet are arranged on the peripheral wall of the pump housing, and the water inlet and the water outlet are arranged on the same side or opposite sides of the pump housing.

8. A pump according to any one of claims 1 to 6, characterized in that The bushing has a bushing cavity with both ends connected to the pump cavity, the part of the pump cavity located on the first side of the bushing forms the water pressure chamber, the part of the pump cavity located on the second side of the bushing and the bushing cavity form the water inlet chamber, the peripheral wall of the bushing is provided with a first port connected to the water inlet and a second port connected to the water outlet, the first port is arranged adjacent to the first end of the groove and connected to the bushing cavity, and the second port is connected to the second end of the groove.

9. The pump according to claim 8, characterized in that An exhaust hole is provided at the second end of the groove, and the exhaust hole connects the water inlet chamber and the water pressure chamber. At least one guide plate is provided in the bushing cavity, and two exhaust holes are provided. One of the at least one guide plate is located between the two exhaust holes.

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