Motor assembly, water pump and water heater

Abstract

The utility model discloses a motor assembly, a water pump and a water heater, the motor assembly comprises a shielding sleeve, an iron core part and a rotor part, the shielding sleeve is provided with a first accommodating cavity and a second accommodating cavity, the second accommodating cavity surrounds the first accommodating cavity, and the second accommodating cavity and the first accommodating cavity are arranged on the same wall; a first reinforcing rib is arranged on the side, facing the second containing cavity, of the common wall of the second containing cavity and the first containing cavity, the iron core component is arranged in the second containing cavity and provided with a notch, the first reinforcing rib is clamped into the notch to limit the iron core component to rotate around the rotating axis of the motor assembly, and the rotor component is rotationally arranged in the first containing cavity. The first containing cavity and the second containing cavity are designed to share the wall, the size of the shielding sleeve can be reduced, the structural strength of the shielding sleeve can be improved through the first reinforcing ribs, the shielding sleeve is effectively prevented from being broken under the limiting working condition, the notches of the iron core component are matched with the first reinforcing ribs, the notches are clamped by the first reinforcing ribs when the iron core component is installed in the second containing cavity, and the shielding sleeve is prevented from being broken. And an iron core part is positioned and restrained.

Description

Technical Field

[0001] The present application relates to the technical field of pumping devices, and in particular to a water pump and a water heater. Background Art

[0002] The water pump includes a pump body and a motor assembly. The motor assembly includes a shielding sleeve, a core component and a rotor component assembled together. The shielding sleeve forms an installation base. The rotor component is rotatable relative to the shielding sleeve, while the core component is not rotatable relative to the shielding sleeve. In order to prevent the core component from rotating, it is necessary to constrain the core component by setting a limiting structure. The present application proposes a new solution for the limiting constraint of the core component. Utility Model Content

[0003] The present application aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present application proposes a motor assembly.

[0004] To achieve the above objectives, the present application discloses a motor assembly, which includes:

[0005] A shielding sleeve, comprising a first cavity and a second cavity, wherein the second cavity surrounds the first cavity, and the second cavity and the first cavity share a common wall, and a first reinforcing rib is provided on a side of the common wall of the second cavity and the first cavity facing the second cavity;

[0006] An iron core component is disposed in the second cavity, the iron core component has a notch, the first reinforcing rib is inserted into the notch to limit the iron core component from rotating around the rotation axis of the motor assembly; and

[0007] The rotor component is rotatably disposed in the first cavity.

[0008] In some embodiments of the present application, the first reinforcing rib extends along the axial direction of the motor assembly.

[0009] In some embodiments of the present application, a plurality of the first reinforcing ribs are spaced apart and distributed around the rotation axis of the motor assembly, and a plurality of the first reinforcing ribs and a plurality of the notches correspond one to one.

[0010] In some embodiments of the present application, the width of the notch is w1, and the width of the first reinforcing rib is w2, satisfying w2=(0.5-0.7)*w1.

[0011] In some embodiments of the present application, the width of the notch is w1, and the height of the first reinforcing rib is h1, satisfying h1=(0.5-0.7)*w1.

[0012] In some embodiments of the present application, the outer peripheral surface of the core component is provided with a groove, the groove extends along the axial direction of the motor assembly, and the second cavity is provided with a positioning member, the positioning member is inserted into the groove to limit the rotation of the core component around the rotation axis of the motor assembly.

[0013] In some embodiments of the present application, the core component includes a core bracket, and the core bracket is provided with limit assemblies at both ends along the axial direction of the motor assembly, respectively. The limit assemblies include a first stop block and a second stop block protruding along the axial direction of the motor assembly, the first stop block is located on the inner side of the core bracket, and the second stop block is located on the outer side of the core bracket.

[0014] In some embodiments of the present application, the second stopper is provided with a limiting protrusion along the radial direction of the motor assembly and away from the first stopper.

[0015] A second aspect of the present application discloses a water pump, which includes the above-mentioned motor assembly.

[0016] In some embodiments of the present application, the water pump includes a pump body, which is connected and installed with the motor assembly, and an impeller cavity is formed between the pump body and the motor assembly. The first cavity is open toward the pump body and constitutes part of the impeller cavity, and the second cavity is open away from the pump body.

[0017] In some embodiments of the present application, the shielding sleeve includes:

[0018] a first end plate;

[0019] A first ring plate surrounds the rotation axis of the water pump, and the first end plate is arranged at one end of the first ring plate to enclose the first cavity with the first ring plate;

[0020] A second end plate, disposed at the other end of the first ring plate and surrounding the first ring plate; and

[0021] A second ring plate, disposed on the second end plate and surrounding the first ring plate, wherein the second cavity is disposed between the second ring plate and the first ring plate;

[0022] The first ring plate forms a common wall of the second cavity and the first cavity.

[0023] In some embodiments of the present application, the first end plate, the first ring plate, and the second end plate and the pump body enclose the impeller cavity, the first end plate is provided with a second reinforcing rib, and the second end plate is provided with a third reinforcing rib.

[0024] In some embodiments of the present application, the first reinforcing rib extends along the axial direction of the water pump, the second reinforcing rib and the third reinforcing rib extend along the radial direction of the water pump, one end of the first reinforcing rib is connected to the second reinforcing rib, and the other end is connected to the third reinforcing rib.

[0025] A third aspect of the present application discloses a water heater, which includes the above-mentioned water pump.

[0026] In the technical solution of the present application, the first cavity and the second cavity are designed with a common wall, which is conducive to reducing the volume of the shielding sleeve and reducing the amount of material used, and a first reinforcing rib is designed on the common wall of the first cavity and the second cavity. On the basis of the common wall design, the structural strength of the shielding sleeve is improved, and the shielding sleeve is effectively prevented from breaking under extreme working conditions. In addition, on the basis of the design of the first reinforcing rib, the notch of the core component is matched with the first reinforcing rib. When the core component is installed in the second cavity, the notch is stuck by the first reinforcing rib. The first reinforcing rib can also play a role of positioning and restraining the core component, thereby preventing the core component from rotating around the rotation axis of the motor assembly.

[0027] Other advantages of the present application will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other designs can be obtained based on the structures shown in these drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of a water pump in some embodiments;

[0030] Figure 2 A cross-sectional view of a water pump in some embodiments;

[0031] Figure 3 An exploded view of a water pump in some embodiments;

[0032] Figure 4 An exploded view of a motor assembly and a base in some embodiments;

[0033] Figure 5 Schematic diagram of the motor assembly and the base in some embodiments (viewing angle and Figure 4 different);

[0034] Figure 6 It is a schematic diagram of assembling the shielding sleeve, the core component and the base in some embodiments;

[0035] Figure 7 It is a schematic diagram of assembling the shielding sleeve and the core component in some embodiments;

[0036] Figure 8 for Figure 7 The enlarged view marked as A in FIG.

[0037] Fig. 9 Schematic diagram of a shielding sleeve in some embodiments;

[0038] Fig.10 A cross-sectional view of a shielding sleeve in some embodiments;

[0039] Fig.11 A cross-sectional view of a shielding sleeve in some embodiments (the cross section is perpendicular to the rotation axis of the water pump);

[0040] Fig.12 for Fig.11 The enlarged view marked as B in FIG.

[0041] Fig.13 Schematic diagram of core components in some embodiments;

[0042] Fig.14 Schematic diagram of the core component in some embodiments (observed along the extending direction of the rotation axis of the water pump);

[0043] Fig.15 1 is an exploded view of the core components in some embodiments.

[0044] Description of Figure Numbers:

[0045] Water pump 100, pump body 1000, pump cover 1100, water inlet interface 1110, pump housing 1200, water outlet interface 1120, primary cavity 1310, secondary cavity / impeller cavity 1320, primary impeller 1410, secondary impeller 1420, motor assembly 2000, shielding sleeve 2100, first cavity 2101, second cavity 2102, first end plate 2110, second end plate 2120, first ring plate 2130, second ring plate 2140, together Wall 2150, first reinforcing rib 2151, second reinforcing rib 2152, third reinforcing rib 2153, positioning piece 2160, core component 2200, core 2210, notch 2211, groove 2212, groove 2213, core bracket 2220, first bracket 2221, second bracket 2222, limiting assembly 2230, first stop block 2231, second stop block 2232, limiting protrusion 2233, rotor component 2300, base 3000.

[0046] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0049] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0051] The first aspect of the present application provides a motor assembly 2000 combined with Figures 1 to 10 As shown, the motor assembly 2000 includes a shielding sleeve 2100, a core component 2200 and a rotor component 2300. The core component 2200 and the rotor component 2300 are respectively installed on the shielding sleeve 2100. The shielding sleeve 2100 is provided with a first cavity 2101 and a second cavity 2102. The rotor component 2300 is installed in the first cavity 2101 and is rotatable relative to the shielding sleeve 2100. The core component 2200 is installed in the second cavity 2102 and is immovably arranged relative to the shielding sleeve 2100. When the core component 2200 is energized, the rotor component 2300 can be caused to rotate.

[0052] Among them, the first cavity 2101 and the second cavity 2102 are designed to have a common wall. The common wall 2150 of the first cavity 2101 and the second cavity 2102 is provided with a first reinforcing rib 2151 on the side facing the second cavity 2102, and the core component 2200 has a groove 2211. When the core component 2200 is installed in the second cavity 2102, the first reinforcing rib 2151 is inserted into the groove 2211, thereby limiting the core component 2200 and preventing the core component 2200 from rotating around the rotation axis of the motor assembly 2000.

[0053] In this embodiment, the first cavity 2101 and the second cavity 2102 are designed with a common wall, which is conducive to reducing the volume of the shielding sleeve 2100 and reducing the amount of material used. In addition, a first reinforcing rib 2151 is designed on the common wall 2150 of the first cavity 2101 and the second cavity 2102, so as to improve the structural strength of the shielding sleeve 2100 on the basis of the common wall design, and effectively prevent the shielding sleeve 2100 from breaking under extreme working conditions. In addition, on the basis of designing the first reinforcing rib 2151, the notch 2211 of the core component 2200 is matched with the first reinforcing rib 2151, and when the core component 2200 is installed in the second cavity 2102, the notch 2211 is stuck by the first reinforcing rib 2151, and the first reinforcing rib 2151 can also play a role of positioning and restraining the core component 2200, preventing the core component 2200 from rotating around the rotation axis of the motor assembly 2000.

[0054] Specifically, the shielding sleeve 2100 is the main structural component of the motor assembly 2000, which supports the core component 2200 and the rotor component 2300 and provides a basis for the operation of the motor assembly 2000. Generally speaking, the shielding sleeve 2100 is made of plastic material. Of course, the shielding sleeve 2100 can also be made of other materials.

[0055] The shielding sleeve 2100 is provided with a first cavity 2101 and a second cavity 2102, the rotor component 2300 is provided in the first cavity 2101, and the core component 2200 is provided in the second cavity 2102. Since the second cavity 2102 surrounds the first cavity 2101, the core component 2200 surrounds the rotor component 2300. When the core component 2200 is energized, a changing magnetic field is generated, thereby driving the rotor component 2300. In this embodiment, the first cavity 2101 and the second cavity 2102 are designed to be arranged with a common wall, so that the structure can be made more compact. This is because if the first cavity 2101 and the second cavity 2102 have independent walls respectively, more space will be occupied. The common wall arrangement in this embodiment is equivalent to canceling one of the walls, which is conducive to reducing the occupation of space.

[0056] In order to prevent the structural strength of the shielding sleeve 2100 from being affected under the premise that the first cavity 2101 and the second cavity 2102 are arranged with a common wall, a first reinforcing rib 2151 is provided on the common wall 2150 between the first cavity 2101 and the second cavity 2102. The first reinforcing rib 2151 can improve the structural strength of the common wall 2150 between the first cavity 2101 and the second cavity 2102, thereby improving the structural strength of the shielding sleeve 2100.

[0057] As mentioned above, the power supply of the core component 2200 drives the rotor component 2300 to rotate, so the core component 2200 needs to be designed to be immovable in the second cavity 2102. In addition, since the core component 2200 has a notch 2211, the core component 2200 is limited based on the action of the notch 2211 and the first reinforcing rib 2151 in this embodiment, so there is no need to set other structures to limit the core component 2200. That is, the first reinforcing rib 2151 is set on the side of the common wall 2150 facing the second cavity 2102, and when the core component 2200 is installed in the second cavity 2102, the first reinforcing rib 2151 is inserted into the notch 2211. For example, the core component 2200 is inserted into the second cavity 2102 roughly along the extension direction of the rotation axis of the motor assembly 2000 (the rotation axis of the motor assembly 2000 is the rotation axis of the rotor component 2300, and the extension direction of the rotation axis of the motor assembly 2000 is axial). During the process of inserting the core component 2200 into the second cavity 2102, the notch 2211 is aligned with the first reinforcing rib 2151. As the core component 2200 is inserted, the first reinforcing rib 2151 is gradually inserted into the notch 2211. Through the action of the first reinforcing rib 2151, the core component 2200 can be restricted from rotating around the rotation axis of the motor assembly 2000, so that the rotor component 2300 can be driven to rotate when the core component 2200 is energized.

[0058] Combination Fig. 9 and Fig.10As shown, in some embodiments of the present application, the first reinforcing rib 2151 extends along the axial direction of the motor assembly 2000. Specifically, the second cavity 2102 surrounds the first cavity 2101. Along the axial direction of the motor assembly 2000, the first cavity 2101 and the second cavity 2102 both have a certain depth. The first reinforcing rib 2151 extends along the axial direction of the motor assembly 2000, thereby ensuring that the common wall 2150 of the first cavity 2101 and the second cavity 2102 has a high structural strength in the axial direction of the motor assembly 2000. It can be understood that the core component 2200 also has a certain length along the axial direction of the motor assembly 2000. The first reinforcing rib 2151 extends along the axial direction of the motor assembly 2000, which is also more conducive to the first reinforcing rib 2151 cooperating with the notch 2211 in the axial direction to achieve the limitation of the core component 2200. Because the first reinforcing rib 2151 extends axially, the core component 2200 can be placed as close as possible to the common wall 2150 between the first cavity 2101 and the second cavity 2102 without affecting the insertion of the core component 2200 into the second cavity 2102 .

[0059] Furthermore, combined with Fig. 9 As shown, in some embodiments of the present application, there are multiple first reinforcing ribs 2151 , the multiple first reinforcing ribs 2151 are arranged at intervals around the rotation axis of the motor assembly 2000 , and the multiple notches 2211 correspond one-to-one to the multiple first reinforcing ribs 2151 .

[0060] Specifically, since the second cavity 2102 surrounds the first cavity 2101, the common wall 2150 between the first cavity 2101 and the second cavity 2102 is annular. In this embodiment, a plurality of first reinforcing ribs 2151 are arranged at intervals around the rotation axis of the motor assembly 2000. That is to say, the common wall 2150 between the first cavity 2101 and the second cavity 2102 has first reinforcing ribs 2151 in the direction around the rotation axis of the motor assembly 2000. This ensures that the structural strength of the common wall 2150 between the first cavity 2101 and the second cavity 2102 is uniformly improved in the direction around the rotation axis of the motor assembly 2000.

[0061] In addition, generally speaking, the core component 2200 generally has an annular structure, and a plurality of spaced-apart slots 2211 are distributed along the ring of the core component 2200. The plurality of slots 2211 are arranged one-to-one with the plurality of first reinforcing ribs 2151, so that a plurality of constraint points are formed in the direction of the rotation axis (i.e., the circumferential direction) around the motor assembly 2000, thereby achieving better restriction on the core component 2200.

[0062] In order to make the notch 2211 and the first reinforcing rib 2151 better match, Figure 7 , Figure 8 , Fig.11 ,and Fig.14 As shown, in some embodiments of the present application, the width of the slot 2211 is defined as w1, and the width of the first reinforcing rib 2151 is defined as w2, which needs to satisfy the condition w2=(0.5-0.7)*w1, for example, w2 is 0.5*w1, 0.6*w1 or 0.7*w1. Since the first reinforcing rib 2151 needs to be inserted into the slot 2211 as the core component 2200 is installed in place, by limiting the width of the first reinforcing rib 2151, there is a certain distance between the first reinforcing rib 2151 and the edge of the slot 2211, so that the first reinforcing rib 2151 can be smoothly inserted into the slot 2211, and at the same time, the structural strength of the shielding sleeve 2100 is ensured.

[0063] Further, continue to combine Figure 7 , Figure 8 , Fig.11 ,and Fig.14 As shown, in some embodiments of the present application, the height of the first reinforcing rib 2151 is defined as h1, which needs to satisfy the condition h1=(0.5-0.7)*w1, for example, h1 is 0.5*w1, 0.6*w1 or 0.7*w1. It can be understood that the core component 2200 has a slot 2213 connected to the notch 2211, and the coil winding of the core component 2200 is wound in the slot 2213. By limiting the height of the first reinforcing rib 2151, the first reinforcing rib 2151 is prevented from being too stuck in the slot 2213 and occupying the space of the coil winding, and the first reinforcing rib 2151 is prevented from interfering with the coil winding.

[0064] It can be understood that the width in the above text is the minimum dimension between the corresponding two sides along the direction around the rotation axis of the motor assembly 2000, and the height is measured along the radial direction of the motor assembly 2000 (the radial direction is the direction passing through the rotation axis of the motor assembly 2000 and perpendicular to the rotation axis). Fig.12 and Fig.14 shown.

[0065] A second aspect of the present application discloses a water pump 100 , which includes the motor assembly 2000 described above.

[0066] Combination Figures 1 to 5 As shown, in some embodiments of the present application, the water pump 100 includes a pump body 1000, and the motor assembly 2000 and the pump body 1000 are interconnected and assembled, so that the motor assembly 2000 can drive the impeller of the pump body 1000 (hereinafter referred to as the first-stage impeller 1410 and the second-stage impeller 1420) to rotate.

[0067] For example, the pump body 1000 includes a pump cover 1100, a pump casing 1200, a first-stage impeller 1410 and a second-stage impeller 1420. The pump cover 1100 is connected to one side of the pump casing 1200. A first-stage cavity 1310 is formed between the pump cover 1100 and the pump casing 1200. The first-stage impeller 1410 is rotatably disposed in the first-stage cavity 1310. The motor assembly 2000 is connected to the other side of the pump casing 1200. A second-stage cavity 1320 is formed between the motor assembly 2000 and the pump casing 1200. The second-stage impeller 1420 is rotatably disposed in the second-stage cavity 1320.

[0068] The connection between the motor assembly 2000 and the pump body 1000 is specifically achieved by connecting the shielding sleeve 2100 and the pump housing 1200. When the motor assembly 2000 is connected to the pump body 1000, the rotor component 2300 can cooperate with the primary impeller 1410 and the secondary impeller 1420, thereby driving the primary impeller 1410 and the secondary impeller 1420 to rotate. The cooperation between the rotor component 2300 and the primary impeller 1410 and the secondary impeller 1420 can be referred to the relevant technology and will not be described in detail here. Generally speaking, the water pump 100 also includes a base 3000, which is connected to the side of the pump housing 1200 facing away from the pump cover 1100, thereby enclosing the secondary cavity 1320, and the water pump 100 is installed in the target area through the base 3000.

[0069] The pump cover 1100 is provided with a water inlet interface 1110, which is communicated with the primary cavity 1310. The pump housing 1200 is provided with a water outlet interface 1120, which is communicated with the secondary cavity 1320. The core component 2300 of the motor assembly 2000 is energized to drive the rotor component 2300 to rotate, and the rotor component 2300 drives the primary impeller 1410 and the secondary impeller 1420 to rotate. Water enters the primary cavity 1310 from the water inlet interface 1110, enters the secondary cavity 1320 after being pressurized by the primary impeller 1410, and is discharged from the water outlet interface 1120 after being pressurized by the secondary impeller 1420. The water head is greatly provided through the action of the primary impeller 1410 and the secondary impeller 1420.

[0070] In this embodiment, the first cavity 2101 is open toward the pump body 1000, and the second cavity 2102 is open away from the pump body 1000. Through such an arrangement, when assembling the motor assembly 2000, the rotor component 2300 can be conveniently inserted into the first cavity 2101 through the open end of the first cavity 2101, and the core component 2200 can be conveniently inserted into the second cavity 2102 through the open end of the second cavity 2102, thereby achieving the core component 2200 surrounding the rotor component 2300. When the shielding sleeve 2100 is connected to the pump casing 1200, an impeller chamber 1320 (i.e., the secondary chamber 1320 mentioned above) is enclosed between the shielding sleeve 2100 and the pump casing 1200, and the first chamber 2101 constitutes part of the impeller chamber 1320, thereby facilitating the driving connection between the rotor component 2300 and the impeller (secondary impeller 1420) of the water pump 100. Since the second chamber 2102 is open with its back to the pump body 1000, it is difficult for water to enter the second chamber 2102 and cause damage to the water pump 100.

[0071] Combination Figure 6 and Fig.10 As shown, the shielding sleeve 2100 includes a first end plate 2110, a first ring plate 2130, a second end plate 2120 and a second ring plate 2140. The first end plate 2110, the first ring plate 2130, the second end plate 2120 and the second ring plate 2140 cooperate to form a first cavity 2101 and a second cavity 2102.

[0072] Specifically, the first end plate 2110 is roughly flat and perpendicular to the rotation axis of the water pump 100. One end of the first ring plate 2130 is arranged at the edge of the first end plate 2110, and the first ring plate 2130 surrounds the rotation axis of the water pump 100. The first ring plate 2130 is cylindrical as a whole along the extension direction of the rotation axis of the water pump 100 (the rotation axis of the water pump 100 is the rotation axis of the rotor component 2300, that is, the extension direction of the rotation axis of the water pump 100 is axial). In this way, the first end plate 2110 and the first ring plate 2130 cooperate to enclose a first cavity 2101, and the first cavity 2101 is open toward the pump body 1000. The rotor component 2300 is installed in the first cavity 2101 and can rotate in the first cavity 2101.

[0073] The second end plate 2120 is arranged at the other end of the first ring plate 2130, and the second end plate 2120 is roughly perpendicular to the rotation axis of the water pump 100. The second ring plate 2140 is arranged on the second end plate 2120, such as the second ring plate 2140 is arranged at the edge of the second end plate 2120 away from the first ring plate 2130, and the second ring plate 2140 is cylindrical along the extension direction of the rotation axis of the water pump 100 and surrounds the first ring plate 2130, so that a second cavity 2102 is formed between the second ring plate 2140 and the first ring plate 2130, and the second cavity 2102 is open to the back of the pump body 1000. It can be seen that the first ring plate 2130 is located between the first cavity 2101 and the second cavity 2102, forming a common wall 2150 of the first cavity 2101 and the second cavity 2102.

[0074] Combination Fig.10 As shown, in some embodiments of the present application, the first end plate 2110, the first ring plate 2130 and the second end plate 2120 cooperate with the pump body 1000 to enclose a secondary cavity 1320 (impeller cavity 1320). That is to say, the water flow entering the secondary cavity 1320 (impeller cavity 1320) will directly exert pressure on the first end plate 2110, the first ring plate 2130 and the second end plate 2120. Therefore, the first end plate 2110 is provided with a second reinforcing rib 2152, and the second end plate 2120 is provided with a third reinforcing rib 2153. Through the action of the first reinforcing rib 2151, the second reinforcing rib 2152 and the third reinforcing rib 2153, the structural strength of the first ring plate 2130, the first end plate 2110 and the second end plate 2120 is effectively improved, thereby improving the water flow impact performance of the shielding sleeve 2100 and effectively avoiding damage.

[0075] Combination Fig.10 As shown, in some embodiments of the present application, the first reinforcing rib 2151 extends along the axial direction of the water pump 100, the second reinforcing rib 2152 extends along the radial direction of the water pump 100 (the radial direction of the water pump 100 is a direction passing through and perpendicular to the rotation axis of the water pump 100), and the third reinforcing rib 2153 extends along the radial direction of the water pump 100. The first reinforcing rib 2151, the second reinforcing rib 2152 and the third reinforcing rib 2153 form a whole, thereby further improving the structural strength of the shielding sleeve 2100.

[0076] For example, the first end plate 2110 is provided with a plurality of second reinforcing ribs 2152, and the plurality of second reinforcing ribs 2152 are distributed around the rotation axis of the water pump 100, and a certain angle is provided between adjacent second reinforcing ribs 2152, so that the plurality of second reinforcing ribs 2152 are radially arranged relative to the rotation axis of the water pump 100. Since the first end plate 2110 is arranged at one end of the first ring plate 2130, the first end plate 2110 is basically perpendicular to the rotation axis of the water pump 100. Such an arrangement of the plurality of second reinforcing ribs 2152 is conducive to the uniform distribution of the plurality of second reinforcing ribs 2152 on the first end plate 2110, thereby facilitating the uniform improvement of the structural strength at different positions on the first end plate 2110.

[0077] The same is true for the second end plate 2120. There are multiple third reinforcing ribs 2153 on the second end plate 2120, and the multiple third reinforcing ribs 2153 are distributed around the rotation axis of the water pump 100. There is a certain angle between adjacent third reinforcing ribs 2153, so that the multiple third reinforcing ribs 2153 are radially arranged with respect to the rotation axis of the water pump 100. Since the second end plate 2120 is arranged at the other end of the first ring plate 2130, the second end plate 2120 is basically perpendicular to the rotation axis of the water pump 100. Through such an arrangement of the multiple third reinforcing ribs 2153, the multiple third reinforcing ribs 2153 are facilitated to be evenly distributed on the second end plate 2120, thereby facilitating the uniform improvement of the structural strength at different positions on the second end plate 2120.

[0078] For the first reinforcing rib 2151, please refer to the above description and will not be repeated here.

[0079] One end of the first reinforcing rib 2151 is connected to the second reinforcing rib 2152, and the other end of the first reinforcing rib 2151 is connected to the third reinforcing rib 2153, that is, the first reinforcing rib 2151 and the second reinforcing rib 2152 are integrated, and the first reinforcing rib 2151 and the third reinforcing rib 2153 are integrated, that is, the first reinforcing rib 2151, the second reinforcing rib 2152 and the third reinforcing rib 2153 are integrated. For example, the first reinforcing rib 2151, the second reinforcing rib 2152, the third reinforcing rib 2153, the second ring plate 2140, the second end plate 2120, the first ring plate 2130 and the first end plate 2110 are integrally formed, so that the first reinforcing rib 2151, the second reinforcing rib 2152 and the third reinforcing rib 2153 form an integrated structure, further enhancing the structural strength of the shielding sleeve 2100.

[0080] In addition, through the arrangement of the first end plate 2110, the first ring plate 2130 and the second end plate 2120, a corner is formed between the first end plate 2110 and the first ring plate 2130, and a corner is formed between the first ring plate 2130 and the second end plate 2120. The first reinforcing rib 2151, the second reinforcing rib 2152 and the third reinforcing rib 2153 are integrated into one body, which can further improve the structural strength between the first end plate 2110, the first ring plate 2130 and the second end plate 2120, and more effectively strengthen the supporting effect of the corner between the first end plate 2110 and the first ring plate 2130, and the corner between the first ring plate 2130 and the second end plate 2120, thereby effectively avoiding cracks at the corner positions.

[0081] Combination Fig. 9 , Fig.10 , Fig.13 and Fig.15 As shown, in some embodiments of the present application, the outer peripheral surface of the core component 2200 is provided with a groove 2212 , which extends along the axial direction of the water pump 100 , and the second cavity 2102 is provided with a positioning member 2160 , which is used to be inserted into the groove 2212 .

[0082] Specifically, the outer circumferential surface of the core component 2200 is the outermost side in the radial direction of the water pump 100, and a groove 2212 extending along the axial direction of the water pump 100 is arranged on the outer circumferential surface of the core component 2200, for example, the groove 2212 is a semicircular groove, and a positioning member 2160 is arranged at the corresponding position of the second cavity 2102, for example, the positioning member 2160 is a semicircular positioning rod protruding from the wall of the second cavity 2102, that is, the groove 2212 and the positioning member 2160 both extend along the axial direction of the water pump 100, so that when the core component 2200 is inserted into the second cavity 2102, the positioning member 2160 is stuck in the groove 2212, so that a restriction on the core component 2200 is formed on the outer side of the core component 2200 (the side away from the rotation axis of the water pump 100), thereby preventing the core component 2200 from rotating around the rotation axis of the water pump 100.

[0083] It can be understood that the slot 2211 and the first reinforcement rib 2151 mentioned above also play a role in limiting the rotation of the core component 2200 around the rotation axis of the water pump 100. Since the slot 2211 is located on the inner side of the core component 2200 (the side close to the rotation axis of the water pump 100) relative to the groove 2212, the core component 2200 can be restricted at the inner and outer sides through the cooperation between the slot 2211 and the first reinforcement rib 2151, and the cooperation between the groove 2212 and the positioning piece 2160, thereby achieving a better restriction effect.

[0084] Combination Fig.13 and Fig.15As shown, in some embodiments of the present application, the core component 2200 includes a core support 2220. It can be understood that the core component 2200 also includes a core 2210 and a coil winding. Generally speaking, the coil winding is not directly wound on the core 2210, but through the setting of the core support 2220, the coil winding is directly wound on the core support 2220 and thus indirectly wound on the core 2210, so as to prevent the core 2210 from damaging the insulation of the coil winding.

[0085] For example, the core bracket 2220 includes a first bracket 2221 and a second bracket 2222. The first bracket 2221 is shaped like one end of the core 2210 along the axial direction, and the second bracket 2222 is shaped like the other end of the core 2210 along the axial direction. The so-called shaping means that the shapes are similar. In this way, the first bracket 2221 can be sleeved on one end of the core 2210, and the second bracket 2222 can be sleeved on the other end of the core 2210, thereby wrapping the core 2210. Of course, the core bracket 2220 can also realize the integral injection molding wrapping of the core 2210 as a whole, and then the coil winding is wound on the core bracket 2220 to realize the winding of the core 2210.

[0086] The core support 2220 is provided with a limit assembly 2230 at both ends along the axial direction of the water pump 100, and the limit assembly 2230 includes a first stopper 2231 and a second stopper 2232. The first stopper 2231 and the second stopper 2232 are both protruded along the axial direction of the water pump 100, and the first stopper 2231 is correspondingly arranged on the inner side of the core support 2220, and the second stopper 2232 is arranged on the outer side of the core support 2220. In this way, when the coil winding is wound between the inner side and the outer side of the core support 2220, this part of the coil winding can be located between the first stopper 2231 and the second stopper 2232, and the first stopper 2231 and the second stopper 2232 realize the limit of the coil winding. Furthermore, in combination with Fig.15 As shown, the second stop block 2232 is provided with a limiting protrusion 2233, and the limiting protrusion 2233 is protruded away from the first stop block 2231 along the radial direction of the water pump 100. When the coil winding is circumferentially wound around the core bracket 2220, the limiting protrusion 2233 can limit the coil winding from detaching, thereby guiding and limiting the circumferential winding of the coil winding, and the circumferential direction is the direction around the rotation axis of the water pump 100.

[0087] The third aspect of the present application also discloses a water heater, for example, the water heater is a gas water heater, the water heater includes a water pump 100, and the water flow is pressurized by setting the water pump 100. The water pump 100 includes a motor assembly 2000, the motor assembly 2000 includes a shielding sleeve 2100, a core component 2200 and a rotor component 2300, the core component 2200 and the rotor component 2300 are respectively installed on the shielding sleeve 2100, the shielding sleeve 2100 is provided with a first cavity 2101 and a second cavity 2102, the rotor component 2300 is installed in the first cavity 2101 and is rotatable relative to the shielding sleeve 2100, the core component 2200 is installed in the second cavity 2102 and is immovably arranged relative to the shielding sleeve 2100, and the core component 2200 can cause the rotor component 2300 to rotate when it is powered on.

[0088] The first cavity 2101 and the second cavity 2102 are designed to have a common wall. A first reinforcing rib 2151 is provided on the side of the common wall 2150 of the first cavity 2101 and the second cavity 2102 facing the second cavity 2102, and the core component 2200 has a notch 2211. When the core component 2200 is installed in the second cavity 2102, the first reinforcing rib 2151 is inserted into the notch 2211, thereby limiting the core component 2200 and preventing the core component 2200 from rotating around the rotation axis of the motor assembly 2000.

[0089] The design of the first cavity 2101 and the second cavity 2102 sharing a wall is conducive to reducing the volume of the shielding sleeve 2100 and reducing the amount of material used. In addition, a first reinforcing rib 2151 is designed on the common wall 2150 of the first cavity 2101 and the second cavity 2102, thereby improving the structural strength of the shielding sleeve 2100 on the basis of the shared wall design, and effectively preventing the shielding sleeve 2100 from breaking under extreme working conditions. In addition, on the basis of designing the first reinforcing rib 2151, the notch 2211 of the core component 2200 is matched with the first reinforcing rib 2151, and when the core component 2200 is installed in the second cavity 2102, the notch 2211 is clamped by the first reinforcing rib 2151, and the first reinforcing rib 2151 can also play a role in positioning and restraining the core component 2200, thereby preventing the core component 2200 from rotating around the rotation axis of the motor assembly 2000. It can be understood that the water pump 100 of the water heater adopts the technical solution of the above embodiment, and therefore has at least the beneficial effects brought by the technical solution of the above embodiment, which will not be repeated here.

[0090] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made based on the concept of the present application and the contents of the present application description and drawings, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A motor assembly (2000), characterized in that: The motor assembly (2000) comprises: A shielding sleeve (2100) is provided with a first cavity (2101) and a second cavity (2102), wherein the second cavity (2102) surrounds the first cavity (2101), and the second cavity (2102) and the first cavity (2101) are provided with a common wall, and a first reinforcing rib (2151) is provided on a side of a common wall (2150) of the second cavity (2102) and the first cavity (2101) facing the second cavity (2102); An iron core component (2200) is disposed in the second cavity (2102), the iron core component (2200) having a notch (2211), the first reinforcing rib (2151) being inserted into the notch (2211) to limit the iron core component (2200) from rotating around the rotation axis of the motor assembly (2000); and The rotor component (2300) is rotatably disposed in the first cavity (2101).

2. The motor assembly (2000) according to claim 1, characterized in that: The first reinforcing rib (2151) extends along the axial direction of the motor assembly (2000).

3. The motor assembly (2000) according to claim 2, characterized in that: The plurality of first reinforcing ribs (2151) are distributed at intervals around the rotation axis of the motor assembly (2000), and the plurality of first reinforcing ribs (2151) and the plurality of notches (2211) correspond one to one.

4. The motor assembly (2000) according to claim 1, characterized in that: The width of the notch (2211) is w1, and the width of the first reinforcing rib (2151) is w2, satisfying w2=(0.5-0.7)*w1.

5. The motor assembly (2000) according to claim 1, characterized in that: The width of the notch (2211) is w1, and the height of the first reinforcing rib (2151) is h1, satisfying h1=(0.5-0.7)*w1.

6. The motor assembly (2000) according to claim 1, characterized in that: The outer peripheral surface of the core component (2200) is provided with a groove (2212), and the groove (2212) extends along the axial direction of the motor assembly (2000). The second cavity (2102) is provided with a positioning member (2160), and the positioning member (2160) is inserted into the groove (2212) to limit the core component (2200) from rotating around the rotation axis of the motor assembly (2000).

7. The motor assembly (2000) according to claim 1, characterized in that: The core component (2200) comprises a core support (2220), and the core support (2220) is provided with limit assemblies (2230) at both ends along the axial direction of the motor assembly (2000), and the limit assemblies (2230) comprise a first stopper (2231) and a second stopper (2232) protruding along the axial direction of the motor assembly (2000), wherein the first stopper (2231) is located on the inner side of the core support (2220), and the second stopper (2232) is located on the outer side of the core support (2220).

8. The motor assembly (2000) according to claim 7, characterized in that: The second stopper (2232) is provided with a limiting protrusion (2233) along the radial direction of the motor assembly (2000) and away from the first stopper (2231).

9. A water pump (100), characterized in that: A motor assembly (2000) comprising any one of claims 1 to 8.

10. The water pump (100) according to claim 9, characterized in that: The water pump (100) comprises a pump body (1000), wherein the pump body (1000) and the motor assembly (2000) are connected and installed, and an impeller chamber (1320) is formed between the pump body (1000) and the motor assembly (2000), wherein the first chamber (2101) is open toward the pump body (1000) and constitutes a part of the impeller chamber (1320), and the second chamber (2102) is open away from the pump body (1000).

11. The water pump (100) according to claim 10, characterized in that: The shielding sleeve (2100) comprises: A first end plate (2110); A first ring plate (2130) surrounds the rotation axis of the water pump (100); the first end plate (2110) is disposed at one end of the first ring plate (2130) to enclose the first cavity (2101) together with the first ring plate (2130); A second end plate (2120) is disposed at the other end of the first ring plate (2130) and surrounds the first ring plate (2130); and a second ring plate (2140), which is disposed on the second end plate (2120) and surrounds the first ring plate (2130); the second cavity (2102) is disposed between the second ring plate (2140) and the first ring plate (2130); Wherein, the first ring plate (2130) constitutes a common wall (2150) of the second cavity (2102) and the first cavity (2101).

12. The water pump (100) according to claim 11, characterized in that: The first end plate (2110), the first ring plate (2130) and the second end plate (2120) together with the pump body (1000) enclose the impeller chamber (1320); the first end plate (2110) is provided with a second reinforcing rib (2152), and the second end plate (2120) is provided with a third reinforcing rib (2153).

13. The water pump (100) according to claim 12, characterized in that: The first reinforcing rib (2151) extends along the axial direction of the water pump (100), the second reinforcing rib (2152) and the third reinforcing rib (2153) extend along the radial direction of the water pump (100), one end of the first reinforcing rib (2151) is connected to the second reinforcing rib (2152), and the other end is connected to the third reinforcing rib (2153).

14. A water heater, characterized in that: The water pump (100) comprises any one of claims 9 to 13.

Images