Pump

Abstract

The present invention discloses a pump, the pump comprising a pump housing and a heating assembly, the pump housing having a water inlet, a water outlet and a cavity communicating with the water inlet and the water outlet, the pump housing comprising a peripheral wall surrounding the cavity, the heating assembly comprising a heat conducting plate and a heating element, the heat conducting plate being arranged on the peripheral wall of the pump housing, and the heating element being arranged on the outer end surface of the heat conducting plate. The axial length of the pump of the present invention is relatively short.

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, in the related art, since the heating part is installed at the axial end of the pump body part, the axial length of the pump is relatively long. Summary of the invention

[0004] To this end, the present invention provides a pump having a relatively short axial length.

[0005] A pump according to an embodiment of the present invention comprises a pump casing having a water inlet, a water outlet and a cavity connected to the water inlet and the water outlet, the pump casing comprising a peripheral wall surrounding the cavity; a heating assembly, the heating assembly comprising a heat conducting plate and a heating element, the heat conducting plate being arranged on the peripheral wall of the pump casing, and the heating element being arranged on the outer end surface of the heat conducting plate.

[0006] According to the pump of the embodiment of the present invention, the axial length of the pump can be reduced by arranging the heating assembly on the peripheral wall of the pump housing.

[0007] In some embodiments, the pump casing further comprises an end wall connected to one end of a peripheral wall of the pump casing, the water inlet is provided on the end wall of the pump casing, and the water outlet is provided on the peripheral wall of the pump casing.

[0008] In some embodiments, the water outlet and the heat conducting plate are arranged on opposite sides of the peripheral wall of the pump housing, and the angle between the water outlet and the heat conducting plate is 0° to 180°.

[0009] In some embodiments, the axial direction of the water outlet is parallel to the axial direction of the heat conducting plate.

[0010] In some embodiments, the axial direction of the water inlet and the axial direction of the water outlet are orthogonal to each other.

[0011] In some embodiments, a cylindrical member is provided on the peripheral wall of the pump casing and extends from the peripheral wall of the pump casing in a direction away from the peripheral wall of the pump casing, the inner cavity of the cylindrical member is connected to the cavity, and the heat conductive plate is provided at the outer end of the cylindrical member to close the outer end of the inner cavity of the cylindrical member.

[0012] In some embodiments, the axial direction of the cylindrical member and the axial direction of the pump housing are orthogonal to each other.

[0013] In some embodiments, the pump further comprises a bushing, wherein the bushing is installed in the cavity, an inner cavity of the bushing is communicated with the cavity, and the inner cavity of the bushing is communicated with the water inlet.

[0014] In some embodiments, the sleeve includes a first sleeve, an annular end wall, a second sleeve and a guide vane, the first sleeve surrounds the second end of the second sleeve, the inner cavity of the first sleeve is connected to the second end of the inner cavity of the second sleeve, the first end of the inner cavity of the second sleeve is connected to the water inlet, the annular end wall is arranged at the first end of the first sleeve, wherein the direction from the first sleeve toward the second sleeve is the first direction, the annular end wall extends spirally around the second sleeve along the first direction, the inner circumferential surface of the annular end wall is connected to the outer circumferential surface of the second sleeve, a first connecting port is formed between the spiral starting end of the annular end wall, the spiral ending end of the annular end wall, the first sleeve and the second sleeve, the first connecting port connects the inner cavity of the first sleeve and the cavity, the guide vane extends spirally around the second sleeve along the first direction, the inner circumferential surface of the guide vane is connected to the outer circumferential surface of the second sleeve, and the spiral starting end of the guide vane is adjacent to the spiral ending end of the annular end wall.

[0015] In some embodiments, the spiral end of the guide plate is adjacent to the water outlet. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0019] Figure 4 is an exploded schematic diagram of a pump casing and a bushing according to an embodiment of the present invention;

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

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

[0022] Figure 7 is a schematic structural diagram of a bushing according to another embodiment of the present invention;

[0023] Figure 8 is a schematic structural diagram of a heating component according to an embodiment of the present invention.

[0024] Reference numerals:

[0025] Pump casing 1, cavity 10, water inlet 11, water outlet 12, annular boss 13, first protruding side 130, peripheral wall 14 of pump casing, end wall 15 of pump casing, cylindrical member 16, bushing 2, first casing 21, inner cavity 210 of first casing, second protruding side 211, annular end wall 22, second casing 23, inner cavity 230 of second casing, first connecting port 201, second connecting port 202, guide plate 24, heating assembly 3, heat conducting plate 31, heating element 32, thermostat 33, fuse 34, heat conducting rod 35, water distribution plate 4, mounting column 41, motor 5, stator 51, rotor 52, motor shaft 53, motor cover 54, impeller 6. DETAILED DESCRIPTION

[0026] 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.

[0027] like Figure 1-8 As shown, a pump according to an embodiment of the present invention includes a pump housing 1 and a heating assembly 3, wherein the pump housing 1 has a water inlet 11 and a water outlet 12, the pump housing 1 has a cavity 10 connected to the water outlet 12, the pump housing 1 includes a peripheral wall 14 surrounding the cavity 10, wherein the axial direction of the pump housing 4 is the left-right direction.

[0028] like Figure 2 , 3 As shown in FIGS. 8 and 9 , the heating assembly 3 includes a heat conducting plate 31 and a heating element 32. The heat conducting plate 31 is disposed on the peripheral wall 14 of the pump housing 1, and the heating element 32 is disposed on the outer end surface of the heat conducting plate 31, and is used to heat the liquid in the cavity 10. Specifically, as Figure 2 , 3As shown in FIGS. 8 and 8 , the heating assembly 3 is opened on the front side of the peripheral wall 14 of the pump housing 1 , that is, the rear end surface of the heat conducting plate 31 is connected to the pump housing 1 , and the heating element 32 is arranged on the front end surface of the heat conducting plate 31 .

[0029] According to the pump of the embodiment of the present invention, by arranging the heating assembly 3 on the peripheral wall 14 of the pump housing 1, the axial length of the pump can be reduced, the flow field space inside the pump housing 1 is ensured, and the influence of the heating element 32 on the stability of the internal flow field when it is placed inside the water pressure chamber is avoided. The space occupied by the cavity 10 in the pump housing 1 is small, and a large heat exchange area is provided. Under the premise of not affecting the internal flow field of the cavity 10 of the pump housing 1, the heat exchange efficiency is improved, and the performance of the pump is improved.

[0030] In some embodiments, the pump casing 1 further includes an end wall 15 , which is connected to one end of a peripheral wall 14 of the pump casing 1 , the water inlet 11 is provided on the end wall 15 of the pump casing 1 , and the water outlet 12 is provided on the peripheral wall of the pump casing 1 .

[0031] Specifically, Figure 2 As shown, the end wall 15 of the pump housing 1 is connected to the left end of the peripheral wall 14 of the pump housing 1 . The end wall 15 is the left end wall of the pump housing 1 , and the water inlet 11 is provided on the left end wall of the pump housing 1 .

[0032] In some embodiments, the water outlet 12 and the heating assembly 3 are arranged on opposite sides of the peripheral wall 14 of the pump housing 1, and the angle between the water outlet 12 and the heat conducting plate 31 is 0° to 180°. In other words, the water outlet 12 and the heating assembly 3 are both opened on the peripheral wall 14 of the pump housing 1, and the water outlet 12 and the heating assembly 3 are located on opposite sides of the peripheral wall 14 of the pump housing 1. For example, the water outlet 12 is opened on the rear side of the peripheral wall 14 of the pump housing 1, and the heating assembly 3 is opened on the front side of the peripheral wall 14 of the pump housing 1.

[0033] Furthermore, the axial direction of the water outlet 12 is parallel to the axial direction of the heat conducting plate 31 .

[0034] In some specific embodiments, the axial direction of the water outlet 12 and the axial direction of the water inlet 11 are orthogonal to each other.

[0035] In some embodiments, Figure 1 , 4 As shown, a cylindrical member 16 is provided on the peripheral wall 14 of the pump casing 1, and the cylindrical member 16 extends from the peripheral wall 14 of the pump casing 1 in a direction away from the peripheral wall 14 of the pump casing 1 (forward as shown in the figure), and the inner cavity of the cylindrical member 16 is connected with the cavity 10, and the heat conducting plate 31 is provided at the outer end of the cylindrical member 16 (the front end of the cylindrical member 16 shown in the figure) to close the outer end of the inner cavity of the cylindrical member 16 (the front end of the inner cavity of the cylindrical member 16 shown in the figure).

[0036] In other words, if Figure 1 , 4As shown, the peripheral wall 14 of the pump housing 1 is opened, and a cylindrical member 16 extending forward is provided at the opening, the rear end of the inner cavity of the cylindrical member 16 is connected to the cavity 10, and the heat conducting plate 31 is provided at the front end of the cylindrical member 16 and closes the front end of the inner cavity of the cylindrical member 16.

[0037] Furthermore, the axial direction of the cylindrical member 16 is orthogonal to the axial direction of the pump housing 1. In other words, the extending direction of the cylindrical member 16 is perpendicular to the axial direction of the pump housing 1.

[0038] Furthermore, a sealing member is provided between the heat conducting plate 31 and the cylindrical member 16. The sealing member may be an O-ring. It is to be understood that the present invention is not limited thereto. Figure 4 As shown, the O-ring is arranged between the left end and the heat conducting plate 31 .

[0039] In some specific embodiments, the heating element 32 is a heating tube. The heating tube is arranged on the outer end surface of the heat conducting plate 31. Specifically, the heat conducting plate 31 has a recessed portion, the opening of which faces outward (frontward as shown in the figure), and the recessed portion is annular and extends along the circumference of the heat conducting plate 31. The heating tube is embedded in the annular recessed portion of the heat conducting plate 31, and the liquid in the cavity 10 is heated by the heating tube on the outer end surface of the heat conducting plate 31. In other words, Figure 8 As shown, the heat conducting plate 31 has a recessed portion that is recessed backwards, and the recessed portion is arranged along a circumference of the heat conducting plate 31 to form a ring, and the heating tube is arranged in the ring-shaped recessed portion. It can be understood that the arrangement of the heating element 32 is not limited to this.

[0040] In some embodiments, Figure 8 As shown, the heating assembly 3 also includes a thermostat 33 and a fuse 34, and the thermostat 33 and the fuse 34 are both arranged on the outer end surface of the heat-conducting plate 31 (the front end surface of the heat-conducting plate 31 shown in the figure). Further, the thermostat 33 and the fuse 34 are both connected in series with the heating element 32 through a heat-conducting rod 35. In other words, the outer end surface of the heat-conducting plate 31 is also provided with a thermostat 33, a fuse 34 and a heat-conducting rod 35, wherein the thermostat 33 is connected in series with the heating element 32 through a heat-conducting rod 35, and the fuse 34 is connected in series with the heating element 32 through a heat-conducting rod 35. Specifically, the thermostat 33 and the fuse 34 are both fixed to the front end surface of the heat-conducting plate 31 by a fixing member, and the fixing member can be a bolt and a nut, and the present invention is not limited thereto. It can be understood that by providing the thermostat 33 and the fuse 34 on the heat-conducting plate 31, the temperature can be monitored in real time, thereby improving the safety performance. Furthermore, the thermostat 33 and the fuse 34 are arranged in parallel, and the heat conducting rod 35 connecting the thermostat 33 and the heating tube and the heat conducting rod 35 connecting the fuse 34 and the heating tube are arranged substantially parallel to each other.

[0041] In some embodiments, the pump further comprises a bushing 2, which is installed in the cavity 10, and the inner cavity of the bushing 2 is communicated with the cavity 10, and the inner cavity of the bushing 2 is communicated with the water inlet 11. Specifically, the bushing 2 and the pump housing 1 are coaxially arranged.

[0042] like Figure 4-7 As shown, the bushing 2 includes a first casing 21, an annular end wall 22, a second casing 23 and a guide vane 24. The first casing 21 surrounds the second end of the second casing 23 (the right end of the second casing 23 shown in the figure), and the inner cavity 210 of the first casing 21 is connected to the inner cavity 230 of the second casing 23, and the first end of the inner cavity 230 of the second casing 23 (the left end of the inner cavity 230 of the second casing 23 shown in the figure) is connected to the water inlet 11. In other words, Figure 5 As shown, the right end of the second casing 23 is arranged in the inner cavity 210 of the first casing 21, and there is an annular gap between the outer circumference of the second casing 23 and the inner circumference of the first casing 21, the left end of the second casing 23 is located on the left side of the first casing 21, the right end of the inner cavity 230 of the second casing 23 is communicated with the inner cavity 210 of the first casing 21, and the left end of the inner cavity 230 of the second casing 23 is communicated with the water inlet 11. Specifically, the axial direction of the second casing 23 is consistent with the axial direction of the first casing 21 and extends in the left-right direction. In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0043] Specifically, the cross-sections of the first sleeve body 21 and the second sleeve body 23 are both circular, and the diameter of the second sleeve body 23 is smaller than the diameter of the first sleeve body 21 .

[0044] The annular end wall 22 is disposed at the first end of the first sleeve 21 (the left end of the first sleeve 21 shown in the figure), wherein the direction from the first sleeve 21 toward the second sleeve 23 is the first direction, that is, the direction from right to left shown in the figure is the first direction.

[0045] The annular end wall 22 extends spirally in a first direction around the second sleeve body 23, and the inner circumference of the annular end wall 22 is connected to the outer circumference of the second sleeve body 23. A first connecting port 201 is formed between the spiral starting end of the annular end wall 22, the spiral ending end of the annular end wall 22, the first sleeve body 21 and the second sleeve body 23. The first connecting port 201 connects the inner cavity 210 of the first sleeve body 21 and the cavity 10.

[0046] In other words, if Figure 5 , 7As shown in Figure 8, the right end face of the annular end wall 22 is connected to the left end face of the first sleeve body 21, the annular end wall 22 spirally extends from right to left around the second sleeve body 23, and the inner circumferential surface of the annular end wall 22 is connected to the outer circumferential surface of the second sleeve body 23, wherein a first connecting port 201 connecting the inner cavity 201 of the first sleeve body 21 and the cavity 10 is formed between the spiral starting end of the annular end wall 22, the spiral ending end of the annular end wall 22, the first sleeve body 21 and the second sleeve body 23.

[0047] Among them, for the formation of the first connecting port 201, it can be understood that, in some specific embodiments, the annular end wall 22 extends spirally from right to left around the second sleeve 23, and spirals around the second sleeve 23, that is, the spiral end of the annular end wall 22 is located on the left side of the spiral starting end of the annular end wall 22, and the first connecting port 201 is one, and is formed between the spiral starting end of the spiral end wall 22, the spiral end of the annular end wall 22, a sleeve 21 and the second sleeve 23. In some other specific embodiments, an annular end wall 22 spirally extends from right to left around the second sleeve body 23, and spirals around the second sleeve body 23 half a circle, and the other annular end wall 22 spirals leftward around the second sleeve body 23 from the right side of the spiral end of the above-mentioned annular end wall 22 (that is, the spiral starting end of the other annular end wall 22 is located on the right side of the spiral end of the above-mentioned annular end wall 22), and spirals around the second sleeve body 23 for another half circle, so that the spiral end of the other annular end wall 22 is located on the left side of the spiral starting end of the above-mentioned annular end wall 22, and there are two first connecting ports 201, one of which is formed at the spiral starting end of the above-mentioned annular end wall 22, the spiral end of the above-mentioned other annular end wall 22, and between the first sleeve body 21 and the second sleeve body 23, and the other first connecting port 201 is formed at the spiral end of the above-mentioned annular end wall 22, the spiral starting end of the above-mentioned other annular end wall 22, and between the first sleeve body 21 and the second sleeve body 23. Furthermore, the spiral end of the one annular end wall 22 is flush with the spiral end of the other annular end wall 22 .

[0048] The guide vane 24 spirally extends around the second casing 23 in the first direction, the inner circumference of the guide vane 24 is connected to the outer circumference of the second casing 23, and the spiral start end of the guide vane 24 is adjacent to the spiral end end of the annular end wall 22. Figure 5 As shown, the guide vane 24 spirally extends from right to left around the second casing 23, and the inner circumference of the guide vane 24 is connected to the outer circumference of the second casing 23, the spiral start of the guide vane 24 is adjacent to the spiral end of the annular end wall 22, and the guide vane 24 is located on the left side of the annular end wall 22. Specifically, the outer circumference of the guide vane 24 is adjacent to the inner circumference of the pump housing 1. Further, the spiral end of the guide vane 24 is adjacent to the water outlet 12.

[0049] According to the pump of the embodiment of the present invention, by arranging the above-mentioned bushing 2 with the spiral annular end wall 22 and the spiral guide plate 24 in the pump casing 1, the liquid can be guided to flow in the direction of flowing out from the bushing 2 and exchange heat with the heating component 3, effectively reducing the volume of water discharged directly through the water outlet 12 without being heated by the heating component 3, making the liquid temperature distribution more uniform, thereby improving the heating efficiency of the pump, reducing pressure diffusion, and reducing the rate of change of the liquid velocity between the heating component 3 and the pump casing 1, and having a certain improvement effect on the vortex in the flow field near the heating component 3, thereby reducing the energy loss in the pump, thereby improving the head, increasing the effective efficiency, reducing the torque, and reducing the shaft power, thereby increasing the efficiency of the pump and improving the hydraulic performance of the pump.

[0050] In some embodiments, the spiral start of the guide vane 24 is connected to the spiral end of the annular end wall 22. It is understood that the present invention is not limited thereto, for example, the spiral start of the guide vane 24 is not connected to the spiral end of the annular end wall 22, as long as the spiral start of the guide vane 24 is adjacent to the spiral end of the annular end wall 22.

[0051] The spiral diameter of the guide vane 24 is smaller than the diameter of the first housing 21. In other words, the outer circumference of the guide vane 24 is located inside the outer circumference of the first housing 21, that is, the outer circumference of the guide vane 24 is located inside the outer circumference of the first housing 21 when projected from left to right.

[0052] In some embodiments, when there are two annular end walls 22, the two annular end walls 22 are arranged symmetrically to the center. There are two guide vanes 24, and the two guide vanes 24 are arranged symmetrically to the center. In other words, for example Figure 5 As shown, one guide vane 24 extends from the spiral end of the above-mentioned annular end wall 22 to the left spirally around the second sleeve body 23, and spirals around the second sleeve body 23 half a circle; another guide vane 24 extends from the spiral end of the above-mentioned another annular end wall 22 to the left spirally around the second sleeve body 23, and spirals around the second sleeve body 23 for another half circle, and the spiral end of the other guide vane 24 is flush with the spiral end of the above-mentioned one guide vane 24, so that the one guide vane 24 coincides with the other guide vane 24 after rotating 180° around the axis of the bushing 2.

[0053] It is understandable that the number of the annular end wall 22 and the guide vane 24 is not limited to the two mentioned above, for example, the annular end wall 22 and the guide vane 24 may be more than two, or the annular end wall 22 and the guide vane 24 may both be one. When the annular end wall 22 and the guide vane 24 are both one, the annular end wall 22 may spiral around the first casing 21, and the guide vane 24 may spiral around the second casing 21 from the spiral end of the annular end wall 22.

[0054] In some embodiments, the inner surface of the pump casing 1 is provided with an annular boss 13 that cooperates with the annular end wall 22. The annular boss 13 extends along the axial spiral of the pump casing 1. The annular boss 13 has a first protruding side surface 130 extending along the axial direction of the pump casing 1. The first sleeve body 21 has a second protruding side surface 211 extending along the axial direction of the bushing 2 at the spiral starting end or the spiral ending end of the annular end wall 22. The first protruding side surface 130 and the second protruding side surface 211 are in contact with each other.

[0055] In other words, if Figure 4-7 As shown, the inner surface of the pump housing 1 has an annular boss 13 extending in a spiral, and the annular boss 13 has the same spiral form as the annular end wall 22, so that the annular boss 13 matches the annular end wall 22. The first protruding side surface 130 of the annular boss 13 extends along the axial direction of the pump housing 1, and the first sleeve body 21 has a second protruding side surface 211 extending along the axial direction of the bushing 2. When there is one annular end wall 22, there is one second protruding side surface 211 and it is formed between the spiral start end of the annular end wall 22 and the spiral end of the annular end wall 22; when there are two annular end walls 22, one second protruding side surface 211 is formed between the spiral start end of one annular end wall 22 and the spiral end of the other annular end wall 22, and the other second protruding side surface 211 is formed between the spiral end of one annular end wall 22 and the spiral start end of the other annular end wall 22.

[0056] It can be understood that, when there is one annular end wall 22 and one second protruding side surface 211, there is one first protruding side surface 130, and the first protruding side surface 130 is fitted with the second protruding side surface 211; when there are two annular end walls 22 and two second protruding side surfaces 211, there are two first protruding side surfaces 130, one first protruding side surface 130 is fitted with one second protruding side surface 211, and the other first protruding side surface 130 is fitted with the other second protruding side surface 211.

[0057] According to the pump of the embodiment of the present invention, the installation position of the bushing 2 in the pump housing 1 can be determined by fitting the first protruding side surface 130 on the inner surface of the pump housing 1 with the second protruding side surface 211 on the first sleeve 21, so as to ensure that the liquid flowing out of the water outlet of the impeller 6 loses less energy in the process of entering the cavity 10 through the bushing 2 to exchange heat with the heating component 3 and then flowing out of the cavity 10.

[0058] In some embodiments, Figure 7As shown, the spiral start end of the annular end wall 22 is provided with a second communication port 202, and the second communication port 202 communicates the inner cavity 210 of the first casing 21 and the cavity 10. Therefore, by providing the second communication port 202, the area of ​​the communication port between the inner cavity 210 of the first casing 21 and the cavity 10, that is, the area of ​​the water outlet of the bushing 2 can be increased, so as to avoid the problem of energy loss and high local pressure caused by the water flow at the water outlet of the bushing 2 due to the small water outlet area of ​​the bushing 2.

[0059] In some embodiments, the distance between the annular end wall 22 and the guide vane 24 is consistent or gradually increases along the spiral extension direction of the annular end wall 22. In other words, the distance between the annular end wall 22 and the guide vane 24 can be changed or fixed along the spiral extension direction of the annular end wall 22, wherein when changing, the distance gradually increases along the spiral extension direction of the annular end wall 22, so that the energy loss is smaller and the speed transition is smoother.

[0060] In some embodiments, Figure 2 As shown, the pump further includes a water separation plate 4, which is arranged at the right end of the pump housing 1 to close the right end of the cavity 10. A mounting column 41 extending to the right is arranged on the right end surface of the water separation plate 4. A barb is arranged at the right end of the mounting column 41, which can be connected to the connecting device on the dishwasher by snapping each other, wherein the connecting device can be made of rubber or other materials. Thus, the stability of the overall structure can be improved and the vibration noise generated when the dishwasher is running can be reduced.

[0061] In some embodiments, the pump also includes a driving assembly, one end of which is disposed in the inner cavity 210 of the first sleeve 21 and is used to drive the liquid to flow from the water inlet 11 into the cavity 10 and into the water outlet 12 through the inner cavity of the sleeve 2 and be discharged through the water outlet 12, wherein the guide plate 24 is used to guide the liquid to flow toward a position adjacent to the heating assembly 3.

[0062] Specifically, the driving assembly includes a motor 5 and an impeller 6. The impeller 6 is disposed in the inner cavity 210 of the first housing 21 and is connected to the motor 5. The motor 5 drives the impeller 6 to rotate.

[0063] Further, the motor 5 includes a stator 51 and a rotor 52, the rotor 52 is arranged in the water separation plate 4, and the stator 51 is located outside the water separation plate 4 and arranged on the outer periphery of the rotor 52 to form a magnetic force. It can be understood that the rotor 52 is placed inside the water separation plate 4, and the motor 5 can be cooled by the water in the pump, thereby improving the cooling efficiency of the motor 5. Figure 2 As shown, a motor shaft 53 extending along its axial direction and rotatable is provided in the middle of the motor 5, the right end of the motor shaft 53 is located in the water-dividing tray 4 and is connected to the rotor 52, the left end of the motor shaft 53 extends out of the water-dividing tray 4 and is located on the left side of the water-dividing tray 4, and a motor cover 54 is also provided at the right end of the motor 5.

[0064] The impeller 6 is connected to the rotor 52. Specifically, Figure 2 As shown, the left end of the motor shaft 53 is connected to the impeller 6 to realize the connection between the rotor 52 and the impeller 6. The motor shaft 53 of the motor 5 drives the impeller 6 to rotate, so that the impeller 6 drives the water flow in the pump 100 to rotate and the impeller 6 does work on the water flow, so that the water flow gains energy and flows out.

[0065] Please refer to the following Figure 1-8 A pump according to a specific embodiment of the present invention is described.

[0066] like Figure 1-8 As shown, the pump according to the embodiment of the present invention includes a pump casing 1 , a bushing 2 , a heating assembly 3 , a water distribution plate 4 , a motor 5 and an impeller 6 .

[0067] The pump housing 1 has a cavity 10, and the pump housing 1 includes a peripheral wall 14 surrounding the cavity 10 and an end wall 15 connected to the left end of the peripheral wall 14 of the pump housing 1, wherein a water inlet 1 extending to the left is provided on the end wall 15 of the pump housing 1, and a water outlet 12 extending backward is provided on the rear side of the peripheral wall 14 of the pump housing 1, and the axial direction of the water outlet 12 and the axial direction of the water inlet 11 are orthogonal to each other. The front side of the peripheral wall 14 of the pump housing 1 is open, and a cylindrical member 16 extending forward is provided at the opening, and the axial direction of the cylindrical member 16 is orthogonal to the axial direction of the pump housing 1, and a heating assembly 3 is provided at the front end of the cylindrical member 16.

[0068] The bushing 2 is installed in the cavity 10 and is arranged coaxially with the pump casing 1. The bushing 2 includes a first sleeve 21, two annular end walls 22, a second sleeve 23 and two guide vanes 24. The cross-sections of the first sleeve 21 and the second sleeve 23 are both circular, and the axial direction of the second sleeve 23 is consistent with the axial direction of the first sleeve 21. The right end of the second sleeve 23 is connected to the left end of the first sleeve 21, and the diameter of the second sleeve 23 is smaller than the diameter of the first sleeve 21.

[0069] The right end of the second sleeve 23 is arranged in the inner cavity 210 of the first sleeve 21, and there is an annular gap between the outer circumferential surface of the second sleeve 23 and the inner circumferential surface of the first sleeve 21, the left end of the second sleeve 23 is located on the left side of the first sleeve 21, the right end of the inner cavity 230 of the second sleeve 23 is connected to the inner cavity 210 of the first sleeve 21, and the left end of the inner cavity 230 of the second sleeve 23 is connected to the water inlet 11.

[0070] The right end face of the annular end wall 22 is connected to the left end face of the first casing 21, wherein one annular end wall 22 spirally extends from right to left around the second casing 23, and spirals around the second casing 23 for half a circle, and the other annular end wall 22 spirals leftward around the second casing 23 from the right side of the spiral end of the above-mentioned annular end wall 22 (that is, the spiral start end of the other annular end wall 22 is located on the right side of the spiral end of the above-mentioned annular end wall 22), and spirals around the second casing 23 for another half circle, so that the spiral end of the other annular end wall 22 is located on the left side of the spiral start end of the above-mentioned annular end wall 22. Moreover, the spiral end of the above-mentioned annular end wall 22 is flush with the spiral end of the above-mentioned another annular end wall 22. The inner circumference of each annular end wall 22 is connected to the outer circumference of the second casing 23, and the two annular end walls 22 are arranged symmetrically with respect to the center.

[0071] There are two first connecting ports 201, one of which is formed at the spiral starting end of the above-mentioned one annular end wall 22, the spiral ending end of the above-mentioned other annular end wall 22, and between the first sleeve 21 and the second sleeve 23, and the other first connecting port 201 is formed at the spiral ending end of the above-mentioned one annular end wall 22, the spiral starting end of the above-mentioned other annular end wall 22, and between the first sleeve 21 and the second sleeve 23.

[0072] The spiral start end of the annular end wall 22 is provided with a second communication port 202, and the second communication port 202 communicates the inner cavity 210 of the first casing 21 and the cavity 10. Therefore, by providing the second communication port 202, the area of ​​the communication port between the inner cavity 210 of the first casing 21 and the cavity 10, that is, the area of ​​the water outlet of the bushing 2 can be increased, so as to avoid the problem of energy loss and high local pressure caused by the water flow at the water outlet of the bushing 2 due to the small water outlet area of ​​the bushing 2.

[0073] Of the two guide vanes 24, one guide vane 24 extends spirally to the left from the spiral end of the above-mentioned one annular end wall 22 around the second sleeve body 23, and spirals around the second sleeve body 23 half a circle; the other guide vane 24 extends spirally to the left from the spiral end of the above-mentioned other annular end wall 22 around the second sleeve body 23, and spirals around the second sleeve body 23 for another half circle, and the spiral end of the other guide vane 24 is flush with the spiral end of the above-mentioned one guide vane 24, and the two guide vanes 24 are arranged in a centrally symmetrical manner, and the spiral end of the guide vane 24 is adjacent to the water outlet 12.

[0074] The distance between the annular end wall 22 and the guide vane 24 gradually increases along the spiral extension direction of the annular end wall 22 .

[0075] The inner surface of the pump housing 1 has an annular boss 13 extending in a spiral, and the annular boss 13 has the same spiral form as the annular end wall 22. The annular boss 13 has two first protruding side surfaces 130 extending along the axial direction of the pump housing 1. A second protruding side surface 211 is formed between the spiral start of one annular end wall 22 and the spiral end of another annular end wall 22. Another second protruding side surface 211 is formed between the spiral end of one annular end wall 22 and the spiral start of another annular end wall 22. One first protruding side surface 130 fits with one second protruding side surface 211, and another first protruding side surface 130 fits with another second protruding side surface 211. Thus, the installation position of the bushing 2 in the pump housing 1 can be determined to ensure that the liquid flowing out of the water outlet of the impeller 6 loses less energy in the process of entering the cavity 10 through the bushing 2 to exchange heat with the heating component 3 and then flowing out of the cavity 10.

[0076] The heating assembly 3 includes a heat conducting plate 31, a heating element 32, a thermostat 33, a fuse 34 and two heat conducting rods 35. The heat conducting plate 31 is arranged on the front end surface of the cylindrical member 16, and the axial direction of the heat conducting plate 31 is parallel to the axial direction of the water outlet 12. The heating element 32, the thermostat 33 and the fuse 34 are arranged on the front end surface of the heat conducting plate 31. The thermostat 33 is connected in series with the heating element 32 through a heat conducting rod 35, and the fuse 34 is connected in series with the heating element 32 through a heat conducting rod 35. The thermostat 33 and the fuse 34 are arranged in parallel, and the heat conducting rod 35 connecting the thermostat 33 and the heating tube and the heat conducting rod 35 connecting the fuse 34 and the heating tube are arranged substantially parallel to each other.

[0077] The heating element 32 is a heating tube. The heating tube is arranged on the front end surface of the heat conducting plate 31. Specifically, the heat conducting plate 31 has a recessed portion, the opening of which faces forward, and the recessed portion is annular and extends along the circumference of the heat conducting plate 31. The heating tube is embedded in the annular recessed portion of the heat conducting plate 31. The liquid in the cavity 10 is heated by the heating tube on the outer end surface of the heat conducting plate 31. In other words, Figure 8 As shown, the heat conducting plate 31 has a recessed portion that is recessed backwards, and the recessed portion is arranged along a circumference of the heat conducting plate 31 to form a ring, and the heating pipe is arranged in the ring-shaped recessed portion. An O-type sealing ring is arranged between the heat conducting plate 31 and the cylindrical member 16.

[0078] The water distribution plate 4 is arranged at the right end of the pump housing 1 to close the right end of the cavity 10. Figure 2 As shown, an O-ring is provided between the water distribution plate 4 and the pump housing 1 .

[0079] The motor 5 includes a stator 51 and a rotor 52. The rotor 52 is arranged in the water separation plate 4. The stator 51 is located outside the water separation plate 4 and arranged on the outer periphery of the rotor 52 to form a magnetic force. The middle part of the motor 5 is provided with a motor shaft 53 extending along its axial direction and being rotatable. Figure 2As shown, the right end of the motor shaft 53 is connected to the rotor 52, the right end of the motor shaft 53 of the motor 5 is located in the water-dividing plate 4, the left end of the motor shaft 53 extends out of the water-dividing plate 4 and is located on the left side of the water-dividing plate 4, and the right end of the motor 5 is also provided with a motor cover 54. The impeller 6 is arranged in the inner cavity 210 of the first sleeve 21 of the bushing 2 and is connected to the left end of the motor shaft 53. In the description of this specification, the description of the reference terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" 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 representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0080] 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 water inlet, a water outlet and a cavity communicating with the water inlet and the water outlet, the pump housing comprising a peripheral wall surrounding the cavity; A heating assembly, the heating assembly comprising a heat-conducting plate and a heating element, the heat-conducting plate being arranged on the peripheral wall of the pump housing, and the heating element being arranged on the outer end surface of the heat-conducting plate; A bushing, wherein the bushing is installed in the cavity, an inner cavity of the bushing is communicated with the cavity, and an inner cavity of the bushing is communicated with the water inlet; the bushing and the pump casing are coaxially arranged; The bushing includes a first sleeve body, an annular end wall, a second sleeve body and a guide vane, the first sleeve body surrounds the second end of the second sleeve body, the inner cavity of the first sleeve body is connected to the second end of the inner cavity of the second sleeve body, the first end of the inner cavity of the second sleeve body is connected to the water inlet, the annular end wall is arranged at the first end of the first sleeve body, wherein the direction from the first sleeve body toward the second sleeve body is the first direction, the annular end wall extends spirally around the second sleeve body along the first direction, the inner circumferential surface of the annular end wall is connected to the outer circumferential surface of the second sleeve body, a first connecting port is formed between the spiral starting end of the annular end wall, the spiral ending end of the annular end wall, the first sleeve body and the second sleeve body, the first connecting port connects the inner cavity of the first sleeve body and the cavity, the guide vane extends spirally around the second sleeve body along the first direction, the inner circumferential surface of the guide vane is connected to the outer circumferential surface of the second sleeve body, and the spiral starting end of the guide vane is adjacent to the spiral ending end of the annular end wall.

2. The pump according to claim 1, characterized in that The pump housing further comprises an end wall connected to one end of the peripheral wall of the pump housing, the water inlet is arranged on the end wall of the pump housing, and the water outlet is arranged on the peripheral wall of the pump housing.

3. The pump according to claim 2, characterized in that The water outlet and the heat conducting plate are arranged on opposite sides of the peripheral wall of the pump housing, and the angle between the water outlet and the heat conducting plate is 0° to 180°.

4. The pump according to claim 3, characterized in that The axial direction of the water outlet is parallel to the axial direction of the heat conducting plate.

5. The pump according to claim 1, characterized in that The axial direction of the water inlet and the axial direction of the water outlet are orthogonal to each other.

6. The pump according to claim 1, characterized in that A cylindrical member is provided on the peripheral wall of the pump housing and extends from the peripheral wall of the pump housing in a direction away from the peripheral wall of the pump housing. The inner cavity of the cylindrical member is connected to the cavity. The heat conduction plate is provided at the outer end of the cylindrical member to close the outer end of the inner cavity of the cylindrical member.

7. The pump according to claim 6, characterized in that The axial direction of the cylindrical member and the axial direction of the pump housing are orthogonal to each other.

8. A pump according to any one of claims 1 to 7, characterized in that The spiral end of the guide plate is adjacent to the water outlet.

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