Water pump and water heater

Abstract

The water pump comprises a pump cover, a pump shell, a motor assembly and a base, the pump cover is connected to one side of the pump shell, the motor assembly is connected to the other side of the pump shell, the base is connected to the side, away from the pump shell, of the motor assembly, and the pump cover, the pump shell, the motor assembly and the base are each provided with a plurality of fastening holes. A plurality of fastening holes of the pump cover, a plurality of fastening holes of the pump shell, a plurality of fastening holes of the motor assembly and a plurality of fastening holes of the base are annularly arranged at intervals in the first direction and respectively form first patterns, each first pattern does not coincide with the initial state of the first pattern when rotating by an angle alpha, alpha meets the condition that alpha is larger than 0 degree and smaller than 360 degrees, and alpha is larger than 0 degree and smaller than 360 degrees. The fastening hole of the pump cover, the fastening hole of the pump shell, the fastening hole of the motor assembly and the fastening hole of the base are suitable for fastening of fasteners in a penetrating mode. Through the arrangement, the uniqueness of the installation positions is achieved between the pump cover and the pump shell, between the pump shell and the motor assembly and between the motor assembly and the base, and correct installation of all parts is guaranteed.

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 is used to achieve the transmission and pressurization of water flow. Some water pumps include a pump cover, a pump housing, a motor assembly and a base. The pump cover is connected to the pump housing, the pump housing is connected to the motor assembly, and the motor assembly is connected to the base. A primary impeller is arranged between the pump cover and the pump housing, and a secondary impeller is arranged between the pump housing and the motor assembly, so as to achieve secondary pressurization of the water flow. At present, when assembling these water pumps, assembly errors are prone to occur between the pump cover and the pump housing, between the pump housing and the motor assembly, and between the motor assembly and the base, which will not only affect the performance of the water pump, but also make it impossible for the water pump to be installed normally in the water heater. 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 water pump.

[0004] To achieve the above objectives, the present application discloses a water pump, which comprises:

[0005] Pump cover;

[0006] A pump housing, wherein the pump cover is connected to one side of the pump housing;

[0007] a motor assembly connected to the other side of the pump housing; and

[0008] A base, the base being connected to a side of the motor assembly facing away from the pump housing;

[0009] Wherein, the pump cover, the pump housing, the motor assembly and the base are respectively provided with a plurality of fastening holes, and the plurality of fastening holes of the pump cover, the plurality of fastening holes of the pump housing, the plurality of fastening holes of the motor assembly and the plurality of fastening holes of the base are respectively arranged alternately in a ring shape along a first direction and respectively constitute a first figure, and each of the first figures does not overlap with the initial state of the first figure at a rotation angle α, and α satisfies the condition 0°<α<360°, and the fastening holes of the pump cover, the fastening holes of the pump housing, the fastening holes of the motor assembly and the fastening holes of the base are suitable for fasteners to be passed through and fastened.

[0010] In some embodiments of the present application, the first figure is an axisymmetric figure.

[0011] In some embodiments of the present application, the pump cover has a water inlet pipe section, and the water inlet pipe section has a water inlet interface. Projected along the axial direction of the water pump, the central axis of the water inlet pipe section passes through at least one fastening hole of the pump cover.

[0012] In some embodiments of the present application, the pump cover and the pump housing are positioned and connected via a first positioning assembly;

[0013] And / or, the pump housing and the motor assembly are positioned and connected via a second positioning assembly;

[0014] And / or, the motor assembly and the base are positioned and connected via a third positioning assembly.

[0015] In some embodiments of the present application, the pump cover is provided with a first positioning member, the pump housing is provided with a second positioning member, the first positioning member and the second positioning member constitute a first positioning assembly and can be plugged into each other;

[0016] And / or, the pump housing is provided with a third positioning member, the motor assembly is provided with a fourth positioning member, and the third positioning member and the fourth positioning member constitute a second positioning assembly and can be plugged into each other;

[0017] And / or, the motor assembly is provided with a fifth positioning member, the base is provided with a sixth positioning member, and the fifth positioning member and the sixth positioning member constitute a third positioning assembly and can be plugged into each other.

[0018] In some embodiments of the present application, the first positioning member surrounds the fastening hole of the pump cover, and the second positioning member surrounds the fastening hole of the pump housing;

[0019] And / or, the third positioning member surrounds the fastening hole of the pump housing, and the fourth positioning member surrounds the fastening hole of the motor assembly;

[0020] And / or, the fifth positioning member surrounds the fastening hole of the motor assembly, and the sixth positioning member surrounds the fastening hole of the base.

[0021] In some embodiments of the present application, one of the first positioning member and the second positioning member is a boss and the other is a sink;

[0022] and / or, one of the third positioning member and the fourth positioning member is a boss and the other is a recess;

[0023] And / or, one of the fifth positioning member and the sixth positioning member is a boss and the other is a recess.

[0024] In some embodiments of the present application, the pump cover is provided with a seventh positioning member, and the pump housing is provided with an eighth positioning member on a side facing the pump cover, and the seventh positioning member and the eighth positioning member are positioned and connected;

[0025] A ninth positioning member is disposed on a side of the pump housing facing the motor assembly, and a tenth positioning member is disposed on the motor assembly, and the ninth positioning member and the tenth positioning member are positioned and connected;

[0026] Wherein, the eighth positioning member and the ninth positioning member are different.

[0027] In some embodiments of the present application, the pump housing includes a pump housing body, and the fastening hole of the pump housing is protruded relative to the pump housing body along the radial direction of the water pump;

[0028] The motor assembly comprises a shielding sleeve, the shielding sleeve comprises a shielding sleeve body and a fastening hole of the motor assembly, and the fastening hole of the motor assembly is protruded relative to the shielding sleeve body along the radial direction of the water pump;

[0029] The pump housing is provided with holes on one side facing the motor assembly and between the fastening hole of the pump housing and the pump housing body, and the shielding sleeve is provided with holes on one side facing the pump housing and between the fastening hole of the motor assembly and the shielding sleeve body.

[0030] In some embodiments of the present application, holes are provided on opposite sides of a line between the fastening hole of the pump housing and the center of the pump housing;

[0031] And / or, holes are provided on opposite sides of a line between the fastening hole of the motor assembly and the center of the shielding sleeve.

[0032] In some embodiments of the present application, the pump cover has a water inlet interface, the pump housing has a water outlet interface, and the water inlet interface and the water outlet interface are different in size.

[0033] A second aspect of the present application discloses a water heater, which includes the water pump described above.

[0034] The technical solution of the present application forms a first figure through multiple fastening holes of each component. The first figure does not overlap with the initial state of the first figure when rotated by an angle α. In this way, the installation positions between the pump cover and the pump casing, between the pump casing and the motor assembly, and between the motor assembly and the base are unique, ensuring the correct installation of the components without error.

[0035] 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

[0036] 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.

[0037] Figure 1A schematic diagram of a water pump in some embodiments;

[0038] Figure 2 A cross-sectional view of a water pump in some embodiments;

[0039] Figure 3 An exploded view of a water pump in some embodiments;

[0040] Figure 4 Schematic diagram of the axial direction of the water pump in some embodiments (observed along the rotation axis of the water pump);

[0041] Figure 5 is a schematic diagram of a first graph in some embodiments;

[0042] Figure 6 Schematic diagram of pump cover in some embodiments;

[0043] Figure 7 Schematic diagram of a pump casing in some embodiments;

[0044] Figure 8 Schematic diagram of the pump housing in some embodiments (from another side perspective);

[0045] Fig. 9 Schematic diagram of the pump casing axial direction in some embodiments (observed from the pump casing toward the pump cover along the rotation axis of the water pump);

[0046] Fig.10 A schematic diagram of a motor assembly in some embodiments;

[0047] Fig.11 Schematic diagram of the motor assembly in the axial direction in some embodiments (viewed from the pump housing toward the motor assembly along the rotation axis of the water pump);

[0048] Fig.12 Schematic diagram of a motor assembly in some embodiments (from another side perspective);

[0049] Fig.13 Schematic diagram of the base in some embodiments.

[0050] Description of Figure Numbers:

[0051] Water pump 100, pump cover 1000, water inlet pipe section 1100, water inlet interface 1110, symmetry axis / central axis of water inlet pipe section 1120, pump casing 2000, pump casing body 2100, water outlet interface 2400, motor assembly 3000, shielding sleeve 3100, shielding sleeve body 3110, base 4000, first impeller 5100, second impeller 5200, first cavity 5300, second cavity 5400, first positioning assembly 6100, first positioning member 6110, second positioning member 6120, second positioning assembly 6200, third positioning member 6210, fourth positioning member 6220, third positioning assembly 6300, fifth positioning member 6310, sixth positioning member 6320, seventh positioning member 6410, eighth positioning member 6420, ninth positioning member 6510, tenth positioning member 6520.

[0052] 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

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] Combination Figure 1 , Figure 2 and Figure 3 As shown, the water pump 100 includes a pump cover 1000, a pump casing 2000, a motor assembly 3000, a base 4000, a first-stage impeller 5100 and a second-stage impeller 5200. The pump cover 1000 is connected to one side of the pump casing 2000, a first cavity 5300 is formed between the pump cover 1000 and the pump casing 2000, the first-stage impeller 5100 is rotatably disposed in the first cavity 5300, the motor assembly 3000 is connected to the other side of the pump casing 2000, a second cavity 5400 is formed between the motor assembly 3000 and the pump casing 2000, the second-stage impeller 5200 is rotatably disposed in the second cavity 5400, the base 4000 is connected to the side of the motor assembly 3000 facing away from the pump casing 2000, and the water pump 100 can be installed in the target area through the base 4000.

[0058] The motor assembly 3000 drives the primary impeller 5100 and the secondary impeller 5200 to rotate, the pump cover 1000 is provided with a water inlet interface 1110, the water inlet interface 1110 is communicated with the first cavity 5300, the pump housing 2000 is provided with a water outlet interface 2400, the water outlet interface 2400 is communicated with the second cavity 5400, and the first cavity 5300 is communicated with the second cavity 5400, the motor assembly 3000 drives the primary impeller 5100 and the secondary impeller 5200 to rotate, water enters the first cavity 5300 from the water inlet interface 1110, enters the second cavity 5400 after being pressurized by the primary impeller 5100, and is discharged from the water outlet interface 2400 after being pressurized by the secondary impeller 5200, through the action of the primary impeller 5100 and the secondary impeller 5200, the head of the water flow is greatly improved, and the actual water flow rate of the user is also greatly improved.

[0059] In order to realize the connection between the pump cover 1000 and the pump casing 2000, the connection between the pump casing 2000 and the motor assembly 3000, and the connection between the motor assembly 3000 and the base 4000, a plurality of fastening holes (see mark A in the accompanying drawings for such fastening holes) are provided on the pump cover 1000 (a plurality of holes in this article means three or more, the same below), a plurality of fastening holes (see mark B in the accompanying drawings for such fastening holes) are provided on the pump casing 2000, a plurality of fastening holes (see mark C in the accompanying drawings for such fastening holes) are provided on the motor assembly 3000, and a plurality of fastening holes (see mark D in the accompanying drawings) are provided on the base 4000. The plurality of fastening holes of the pump cover 1000 correspond one-to-one to the plurality of fastening holes of the pump casing 2000, the plurality of fastening holes of the pump casing 2000 correspond one-to-one to the plurality of fastening holes of the motor assembly 3000, and the plurality of fastening holes of the motor assembly 3000 correspond one-to-one to the plurality of fastening holes of the base 4000.

[0060] The multiple fastening holes of the pump cover 1000, the multiple fastening holes of the pump housing 2000, the multiple fastening holes of the motor assembly 3000, and the multiple fastening holes of the base 4000 are respectively arranged in a ring-shaped alternating manner along a first direction (for example, the first direction is the direction surrounding the rotation axis of the water pump 100), that is, the multiple fastening holes of the pump cover 1000 are arranged in a ring-shaped alternating manner along the first direction, the multiple fastening holes of the pump housing 2000 are arranged in a ring-shaped alternating manner along the first direction, the multiple fastening holes of the motor assembly 3000 are arranged in a ring-shaped alternating manner along the first direction, and the multiple fastening holes of the base 4000 are arranged in a ring-shaped alternating manner along the first direction. Fasteners such as bolts (not shown in the figure) are used to pass through the fastening holes of the pump cover 1000, the fastening holes of the pump housing 2000, the fastening holes of the motor assembly 3000, and the fastening holes of the base 4000, so that the various components can be fastened together.

[0061] In some cases, when the pump cover 1000 rotates around the rotation axis of the water pump 100 by a certain angle, the fastening holes of the pump cover 1000 correspond to the fastening holes of the pump housing 2000. At this time, the fasteners can also pass through the fastening holes of the pump cover 1000 and the fastening holes of the pump housing 2000 for fastening. However, the change in the relative position of the pump cover 1000 and the pump housing 2000 will affect the performance of the water pump 100 and also affect the installation of the water pump 100 to the water heater. In order to prevent the adjacent components (the pump cover 1000 and the pump housing 2000, the pump housing 2000 and the motor assembly 3000, and the motor assembly 3000 and the base 4000) from being fastened and connected by fasteners through fastening holes without alignment.

[0062] Combination Figure 3 , Figure 4 and Figure 5As shown, in some embodiments of the present application, the multiple fastening holes of the pump cover 1000, the multiple fastening holes of the pump housing 2000, the multiple fastening holes of the motor assembly 3000 and the multiple fastening holes of the base 4000 are respectively arranged alternately in a ring shape along a first direction and respectively constitute a first pattern, that is, the multiple fastening holes of the pump cover 1000 are arranged in a ring shape along the first direction and constitute a first pattern, the multiple fastening holes of the pump housing 2000 are arranged in a ring shape along the first direction and constitute a first pattern, the multiple fastening holes of the motor assembly 3000 are arranged in a ring shape along the first direction and constitute a first pattern, and the multiple fastening holes of the base 4000 are arranged in a ring shape along the first direction and constitute a first pattern.

[0063] It can be understood that the “constitute a first figure” in the foregoing text takes the multiple fastening holes of the pump cover 1000 as an example, that is, the multiple fastening holes of the base 4000 are arranged in a ring shape along the first direction and constitute a first figure. The first figure does not coincide with the initial state of the first figure when the rotation angle α is reached, and the angle α needs to satisfy the condition 0°<α<360°. It can be understood that the first figure on the pump housing 2000, the first figure on the motor assembly 3000, and the first figure on the base 4000 do not coincide with the initial state of the first figure when the rotation angle α is reached. In this way, when the first graphics of each component are rotated by an angle α, the fastening holes of the pump cover 1000 do not correspond to the fastening holes of the pump casing 2000, the fastening holes of the pump casing 2000 do not correspond to the fastening holes of the motor assembly 3000, and the fastening holes of the motor assembly 3000 do not correspond to the fastening holes of the base 4000. This prompts the operator that an assembly error has occurred and the fasteners cannot pass through the fastening holes of the components. In other words, the pump cover 1000 has a unique corresponding position with the pump casing 2000, the pump casing 2000 has a unique corresponding position with the motor assembly 3000, and the motor assembly 3000 has a unique corresponding position with the base 4000 (that is, the first graphic only coincides with the initial state of the first graphic when the rotation angle is 360°). By such a setting, installation errors between the components can be effectively avoided.

[0064] Furthermore, combined with Figure 5 As shown, in some of the present applications, the first figure is an axisymmetric figure. By setting it in this way, the distribution of the fastening holes can be made as uniform as possible, so that the connection and fixation between the components can be more stable.

[0065] For example, the pump cover 1000 has five fastening holes, the pump housing 2000 has five fastening holes, the motor assembly 3000 has five fastening holes, and the base 4000 has five fastening holes. Taking the pump cover 1000 as an example, the five fastening holes of the pump cover 1000 are connected in sequence along the first direction to form a non-equilateral pentagon, and the symmetry axis 1120 passes through one of the fastening holes, and two of the fastening holes and the remaining two fastening holes are symmetrical about the symmetry axis 1120.

[0066] Combination Figure 4 and Figure 5 As shown, in some embodiments of the present application, the pump cover 1000 has an inlet pipe section 1100, and the inlet pipe section 1100 is formed with an inlet interface 1110. The inlet interface 1110 is used to connect to the inlet pipeline. The water flow of the inlet pipeline flows into the interior of the water pump 100 through the inlet interface 1110 and then through the inlet pipe section 1100, and is discharged from the water pump 100 after being pressurized by the first-stage impeller 5100 and the second-stage impeller 5200.

[0067] In this embodiment, a projection is made along the axial direction of the water pump 100 (i.e., the extension direction of the rotation axis of the water pump 100 ), such as a projection from the pump cover 1000 toward the base 4000 , and the central axis 1120 of the water inlet pipe section 1100 passes through at least one fastening hole of the pump cover 1000 .

[0068] Specifically, the water inlet pipe section 1100 has a corresponding length. When the central axis 1120 of the water inlet pipe section 1100 passes through at least one fastening hole of the pump cover 1000, no matter whether the number of the fastening holes of the pump cover 1000 is an odd number or an even number, it is beneficial to design the fastening holes of the multiple pump covers 1000 to be symmetrical about the central axis 1120 of the water inlet pipe section 1100, which will be beneficial to the uniform distribution of the fastening holes of the pump cover 1000 and thus ensure the connection and fastening effect.

[0069] For example, taking the pump cover 1000 with five fastening holes as an example, the lines connecting the five fastening holes along the first direction form an axially symmetrical pentagon, and the central axis 1120 of the water inlet pipe section 1100 passes through one of the fastening holes, two of the fastening holes and the remaining two fastening holes are symmetrical about the central axis 1120, that is, the central axis 1120 constitutes the symmetry axis 1120.

[0070] In some embodiments of the present application, the pump cover 1000 and the pump housing 2000 are also positioned and connected via a first positioning assembly 6100 . It can be understood that when assembling the various components, taking the assembly of the pump cover 1000 and the pump casing 2000 as an example, the fastening holes of the pump cover 1000 need to be connected to the corresponding fastening holes of the pump casing 2000. If the fastening holes of the pump cover 1000 and the fastening holes of the pump casing 2000 are slightly displaced relative to each other, then the fasteners will be stuck when passing through the fastening holes of the pump cover 1000 and the fastening holes of the pump casing 2000. For this reason, in the present embodiment, the pump cover 1000 and the pump casing 2000 are also positioned and connected by a first positioning member 6110, that is, when assembling the pump cover 1000 and the pump casing 2000, it is necessary to achieve positioning through the first positioning assembly 6100, and realize pre-positioning of the fastening holes of the pump cover 1000 and the fastening holes of the pump casing 2000 before using the fasteners for fastening connection, so that the fasteners pass through the fastening holes of the pump cover 1000 and the fastening holes of the pump casing 2000 more smoothly.

[0071] Similarly, the assembly between the pump housing 2000 and the motor assembly 3000 is achieved through the second positioning assembly 6200 to achieve positioning connection, and the assembly between the motor assembly 3000 and the base 4000 is achieved through the third positioning assembly 6300 to achieve positioning connection.

[0072] In this way, when connecting the pump cover 1000, the pump housing 2000, the motor assembly 3000 and the base 4000, the pre-positioning of the components is achieved through the cooperation of the first positioning assembly 6100, the second positioning assembly 6200 and the third positioning assembly 6300, so that the fastening holes of the pump cover 1000, the fastening holes of the pump housing 2000, the fastening holes of the motor assembly 3000 and the fastening holes of the base 4000 are better corresponded and connected, thereby greatly facilitating the fasteners to pass through the fastening holes of each component and thus fasten each component.

[0073] Combination Figure 6 and Figure 7 As shown, in some embodiments of the present application, the pump cover 1000 is provided with a first positioning member 6110 and the pump housing 2000 is provided with a second positioning member 6120. The second positioning member 6120 and the first positioning member 6110 constitute the first positioning assembly 6100 mentioned above. The second positioning member 6120 and the first positioning member 6110 are mutually constrained by plugging into each other, thereby achieving pre-positioning during the assembly process of the pump cover 1000 and the pump housing 2000. Generally speaking, during the process of assembling the pump cover 1000 and the pump housing 2000, the pump cover 1000 and the pump housing 2000 are basically moved toward each other along the axial direction of the water pump 100 so as to be assembled together. By setting the first positioning member 6110 and the second positioning member 6120 to be plugged into each other, the structure is simple and the operation is convenient.

[0074] Similarly, combined Figure 8 and Fig.10 As shown, the pump housing 2000 is provided with a third positioning member 6210 and the motor assembly 3000 is provided with a fourth positioning member 6220. The fourth positioning member 6220 and the third positioning member 6210 constitute the second positioning assembly 6200 mentioned above. The fourth positioning member 6220 and the third positioning member 6210 are mutually constrained by plugging into each other, thereby realizing the pre-positioning of the pump housing 2000 and the motor assembly 3000 during assembly. During the process of assembling the pump housing 2000 and the motor assembly 3000, the pump housing 2000 and the motor assembly 3000 are basically moved toward each other along the axial direction of the water pump 100 to be assembled together. By arranging the third positioning member 6210 and the fourth positioning member 6220 to be plugged into each other, the structure is simple and the operation is convenient.

[0075] Similarly, combined Fig.12 and Fig.13As shown, the motor assembly 3000 is provided with a fifth positioning member 6310 and the base 4000 is provided with a sixth positioning member 6320. The sixth positioning member 6320 and the fifth positioning member 6310 constitute the third positioning assembly 6300 mentioned above. The sixth positioning member 6320 and the fifth positioning member 6310 are mutually constrained by plugging into each other, thereby realizing the pre-positioning of the motor assembly 3000 and the base 4000 during the assembly process. During the assembly of the motor assembly 3000 and the base 4000, the motor assembly 3000 and the base 4000 are basically moved toward each other along the axial direction of the water pump 100 to be assembled together. By arranging the fifth positioning member 6310 and the sixth positioning member 6320 to be plugged into each other, the structure is simple and the operation is convenient.

[0076] It can be understood that since the pump cover 1000 is located on one side of the pump housing 2000, the motor assembly 3000 is located on the other side of the pump housing 2000, and the base 4000 is located on the side of the motor assembly 3000 away from the pump housing 2000, the first positioning member 6110 is arranged on the side of the pump cover 1000 facing the pump housing 2000, the second positioning member 6120 is arranged on the side of the pump housing 2000 facing the pump cover 1000, the third positioning member 6210 is arranged on the side of the pump housing 2000 facing the motor assembly 3000, the fourth positioning member 6220 is arranged on the side of the motor assembly 3000 facing the pump housing 2000, the fifth positioning member 6310 is arranged on the side of the motor assembly 3000 facing the base 4000, and the sixth positioning member 6320 is arranged on the side of the base 4000 facing the motor assembly 3000, which is more conducive to the realization of pre-positioning.

[0077] Combination Figures 6 to 13As shown, in some embodiments of the present application, the first positioning member 6110 is designed to surround the fastening hole of the pump cover 1000, and the second positioning member 6120 is designed to surround the fastening hole of the pump housing 2000. Since the pump cover 1000 and the pump housing 2000 are pre-positioned by plugging and positioning the first positioning member 6110 and the second positioning member 6120, the fastening holes of the pump cover 1000 are aligned with the fastening holes of the pump housing 2000. In this embodiment, the first positioning member 6110 is designed to surround the fastening holes of the pump cover 1000, and the second positioning member 6120 is designed to surround the fastening holes of the pump housing 2000. In this way, the fastening holes of the first positioning member 6110 and the pump cover 1000 are extremely close, and the fastening holes of the second positioning member 6120 and the pump housing 2000 are also extremely close. When the first positioning member 6110 and the second positioning member 6120 are plugged and positioned, the alignment degree of the fastening holes of the pump cover 1000 and the fastening holes of the pump housing 2000 is greatly improved. For example, each fastening hole of the pump cover 1000 is surrounded by the first positioning member 6110, and each fastening hole of the pump housing 2000 is surrounded by the second positioning member 6120. Through such an arrangement, the pre-positioning effect of the pump cover 1000 and the pump housing 2000 is greatly enhanced, ensuring that each fastening hole of the pump cover 1000 is aligned with each fastening hole of the pump housing 2000.

[0078] Similarly, the third positioning member 6210 is designed to surround the fastening hole of the pump housing 2000, the fourth positioning member 6220 is designed to surround the fastening hole of the motor assembly 3000, the fifth positioning member 6310 is designed to surround the fastening hole of the motor assembly 3000, and the sixth positioning member 6320 is designed to surround the fastening hole of the base 4000. For the technical effects, refer to the settings of the first positioning member 6110 and the second positioning member 6120, and will not be repeated here.

[0079] The structures of the first positioning component 6100, the second positioning component 6200 and the third positioning component 6300 can be designed to be the same or different. Compared with the latter scheme, the former scheme will simplify the structure. Taking the case where the structures of the first positioning component 6100, the second positioning component 6200 and the third positioning component 6300 are the same as an example, one of the first positioning member 6110 and the second positioning member 6120 is a boss, and the other of the first positioning member 6110 and the second positioning member 6120 is a sink. The boss and the sink are used to quickly achieve concave-convex cooperation for pre-positioning. Similarly, one of the fourth positioning member 6220 and the third positioning member 6210 is a boss, and the fourth positioning member 6220 and the other of the third positioning member 6210 are sinks; one of the sixth positioning member 6320 and the fifth positioning member 6310 is a boss, and the sixth positioning member 6320 and the other of the fifth positioning member 6310 are sinks.

[0080] Combination Figure 6 , Figure 7, Figure 8 and Fig.10 As shown, in some embodiments of the present application, the pump cover 1000 is also provided with a seventh positioning member 6410, and the pump housing 2000 is correspondingly provided with an eighth positioning member 6420, and the pump housing 2000 is also provided with a ninth positioning member 6510, and the motor assembly 3000 is correspondingly provided with a tenth positioning member 6520, the seventh positioning member 6410 is used to cooperate with the eighth positioning member 6420 to achieve a positioning connection, and the ninth positioning member 6510 is used to cooperate with the tenth positioning member 6520 to achieve a positioning connection, on this basis, the eighth positioning member 6420 is arranged on the side of the pump housing 2000 facing the pump cover 1000, and the ninth positioning member 6510 is arranged on the side of the pump housing 2000 facing the motor assembly 3000, and the eighth positioning member 6420 is designed to be different from the ninth positioning member 6510, and the difference here includes but is not limited to the difference in shape, structure, size or orientation, that is, they are not exactly the same. With such a design, when the pump cover 1000 is connected to the side of the pump casing 2000 provided with the ninth positioning member 6510, the seventh positioning member 6410 and the ninth positioning member 6510 cannot cooperate normally and even cause interference between the pump cover 1000 and the pump casing 2000; when the motor assembly 3000 is connected to the side of the pump casing 2000 provided with the eighth positioning member 6420, the eighth positioning member 6420 and the tenth positioning member 6520 cannot cooperate normally and even cause interference between the motor assembly 3000 and the pump casing 2000, thereby further preventing assembly errors of the pump cover 1000, the pump casing 2000 and the motor assembly 3000.

[0081] For example, the seventh positioning member 6410 is a circular hole, the eighth positioning member 6420 is a cylinder, the ninth positioning member 6510 is a notch arranged on the edge of the pump housing 2000, the tenth positioning member 6520 is a protrusion, and the number of the seventh positioning member 6410, the eighth positioning member 6420, the ninth positioning member 6510 and the tenth positioning member 6520 are two respectively, and the connecting line between the two first positioning members 6110 is perpendicular to the connecting line between the two ninth positioning members 6510.

[0082] Combination Figure 8 , Fig. 9 , Fig.10 and Fig.11As shown, in some embodiments of the present application, the pump housing 2000 includes a pump housing body 2100. Along the radial direction of the water pump 100, the fastening holes of the pump housing 2000 are convex relative to the pump housing body 2100. That is, along the circumference of the pump housing 2000 (the circumference of the pump housing 2000 is the direction around the rotation axis of the water pump 100), the adjacent fastening holes are concave. By such a setting, the material consumption of the pump housing 2000 is effectively saved. The motor assembly 3000 includes a shielding sleeve 3100. The shielding sleeve 3100 can be understood as the outermost structure of the motor assembly 3000, which protects the internal structure of the motor assembly 3000. The fastening holes of the motor assembly 3000 are arranged on the shielding sleeve 3100. The shielding sleeve 3100 includes a shielding sleeve body 3110. Along the radial direction of the water pump 100, the fastening holes of the motor assembly 3000 are convex relative to the shielding sleeve body 3110. By such a design, the material consumption of the shielding sleeve 3100 is effectively saved. It is understandable that the pump cover 1000 and the base 4000 also have the same design, that is, the corresponding fastening holes are protruded along the radial direction of the water pump 100 .

[0083] In this embodiment, the pump casing 2000 faces one side of the motor assembly 3000 and a hole is provided between the fastening hole of the pump casing 2000 and the pump casing main body 2100 (this hole is shown as mark E in the accompanying drawings). The so-called hole is an air-avoiding space. In this way, under the premise that the fastening hole of the pump casing 2000 is radially convex, it is beneficial to the uniformity of the wall thickness of the pump casing 2000. Similarly, the same is true for the motor assembly 3000. The shielding sleeve 3100 faces one side of the pump casing 2000 and a hole is provided between the fastening hole of the motor assembly 3000 and the shielding sleeve main body 3110 (this hole is shown as mark F in the accompanying drawings), which is also beneficial to the uniformity of the wall thickness of the shielding sleeve 3100. As mentioned above, after the pressurization of the first-stage impeller 5100 and the second-stage impeller 5200, the second chamber 5400 formed between the pump casing 2000 and the motor assembly 3000 has a relatively high pressure. Through the aforementioned arrangement, the wall surfaces of the pump casing 2000 and the shielding sleeve 3100 are subjected to more uniform stress, thus avoiding local mutations.

[0084] Furthermore, the aforementioned holes are respectively arranged on the opposite sides of the line between the center of the pump casing 2000 and the fastening hole of the pump casing 2000 (this line is shown as mark L1 in the accompanying drawings). In this way, the connection between the fastening hole of the pump casing 2000 and the pump casing main body 2100 is still ensured on the line between the center of the pump casing 2000 and the fastening hole of the pump casing 2000. Through such an arrangement, it is beneficial to uniformly bear the force on the wall surface of the pump casing 2000 and ensure the structural strength of the part where the fastening hole of the pump casing 2000 is located. Similarly, the aforementioned holes are respectively arranged on the opposite sides of the line between the center of the shielding sleeve 3100 (the center of the shielding sleeve is the center of the motor assembly) and the fastening hole of the motor assembly 3000 (this line is shown as mark L2 in the accompanying drawings), and no further details are given.

[0085] Combination Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments of the present application, the pump cover 1000 has a water inlet interface 1110, and the pump housing 2000 has a water outlet interface 2400. The water inlet interface 1110 and the water outlet interface 2400 are respectively used to connect corresponding pipelines. Generally speaking, the water inlet interface 1110 and the water inlet pipeline are connected by plugging, and the water outlet interface 2400 and the water outlet pipeline are connected by plugging. In this embodiment, the sizes of the water inlet interface 1110 and the water outlet interface 2400 are designed to be different. For example, the water inlet interface 1110 and the water outlet interface 2400 are different. The diameter of 110 is larger than the diameter of the water outlet interface 2400, or the diameter of the water inlet interface 1110 is smaller than the diameter of the water outlet interface 2400. Since the water inlet interface 1110 can only be connected to a water inlet pipe of corresponding size, and the water outlet interface 2400 can only be connected to a water outlet pipe of corresponding size, through such a design, when the water pump 100 is installed on the water heater, it can effectively prevent the water inlet interface 1110 from being connected to the water outlet pipe while the water outlet interface 2400 is connected to the water inlet pipe, causing installation errors, thereby ensuring the normal operation of the water pump 100.

[0086] 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. Figure 1 , Figure 2 and Figure 3 As shown, the water pump 100 includes a pump cover 1000, a pump casing 2000, a motor assembly 3000, a base 4000, a first-stage impeller 5100 and a second-stage impeller 5200. The pump cover 1000 is connected to one side of the pump casing 2000, a first cavity 5300 is formed between the pump cover 1000 and the pump casing 2000, the first-stage impeller 5100 is rotatably disposed in the first cavity 5300, the motor assembly 3000 is connected to the other side of the pump casing 2000, a second cavity 5400 is formed between the motor assembly 3000 and the pump casing 2000, the second-stage impeller 5200 is rotatably disposed in the second cavity 5400, the base 4000 is connected to the side of the motor assembly 3000 facing away from the pump casing 2000, and the water pump 100 can be installed to the target area (the target area is set on the water heater) through the base 4000.

[0087] The motor assembly 3000 drives the primary impeller 5100 and the secondary impeller 5200 to rotate, the pump cover 1000 is provided with a water inlet interface 1110, the water inlet interface 1110 is communicated with the first cavity 5300, the pump housing 2000 is provided with a water outlet interface 2400, the water outlet interface 2400 is communicated with the second cavity 5400, and the first cavity 5300 is communicated with the second cavity 5400, the motor assembly 3000 drives the primary impeller 5100 and the secondary impeller 5200 to rotate, water enters the first cavity 5300 from the water inlet interface 1110, enters the second cavity 5400 after being pressurized by the primary impeller 5100, and is discharged from the water outlet interface 2400 after being pressurized by the secondary impeller 5200, through the action of the primary impeller 5100 and the secondary impeller 5200, the head of the water flow is greatly improved, and the actual water flow rate of the user is also greatly improved.

[0088] The pump cover 1000 is provided with multiple fastening holes, the pump housing 2000 is provided with multiple fastening holes, the motor assembly 3000 is provided with multiple fastening holes, and the base 4000 is provided with multiple fastening holes. The multiple fastening holes of the pump cover 1000 correspond one-to-one to the multiple fastening holes of the pump housing 2000, the multiple fastening holes of the pump housing 2000 correspond one-to-one to the multiple fastening holes of the motor assembly 3000, and the multiple fastening holes of the motor assembly 3000 correspond one-to-one to the multiple fastening holes of the base 4000.

[0089] The multiple fastening holes of the pump cover 1000, the multiple fastening holes of the pump housing 2000, the multiple fastening holes of the motor assembly 3000 and the multiple fastening holes of the base 4000 are respectively arranged alternately in a ring shape along the first direction and respectively constitute a first figure, which does not coincide with the initial state of the first figure when rotated by an angle α, and the angle α needs to satisfy the condition 0°<α<360°. When the first graphics of each component are rotated by an angle α, the fastening holes of the pump cover 1000 do not correspond to the fastening holes of the pump casing 2000, the fastening holes of the pump casing 2000 do not correspond to the fastening holes of the motor assembly 3000, and the fastening holes of the motor assembly 3000 do not correspond to the fastening holes of the base 4000. This prompts the operator that an assembly error has occurred and the fasteners cannot pass through the fastening holes of the components. In other words, the pump cover 1000 has a unique corresponding position with the pump casing 2000, the pump casing 2000 has a unique corresponding position with the motor assembly 3000, and the motor assembly 3000 has a unique corresponding position with the base 4000 (i.e., the first graphic only coincides with the initial state of the first graphic when the rotation angle is 360°). By such a setting, installation errors between the components can be effectively avoided.

[0090] 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.

[0091] 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 water pump (100), characterized in that: include: Pump cover (1000); A pump housing (2000), wherein the pump cover (1000) is connected to one side of the pump housing (2000); a motor assembly (3000), the motor assembly (3000) being connected to the other side of the pump housing (2000); and A base (4000), the base (4000) being connected to a side of the motor assembly (3000) facing away from the pump housing (2000); The pump cover (1000), the pump housing (2000), the motor assembly (3000) and the base (4000) are respectively provided with a plurality of fastening holes, and the plurality of fastening holes of the pump cover (1000), the plurality of fastening holes of the pump housing (2000), the plurality of fastening holes of the motor assembly (3000) and the plurality of fastening holes of the base (4000) are respectively arranged alternately in a ring shape along a first direction and respectively constitute a first figure, and each of the first figures does not overlap with the initial state of the first figure when the rotation angle α is reached, and α satisfies the condition 0°<α<360°, and the fastening holes of the pump cover (1000), the fastening holes of the pump housing (2000), the fastening holes of the motor assembly (3000) and the fastening holes of the base (4000) are suitable for fasteners to be passed through and fastened.

2. The water pump (100) according to claim 1, characterized in that: The first figure is an axisymmetric figure.

3. The water pump (100) according to claim 2, characterized in that: The pump cover (1000) has a water inlet pipe section (1100), and the water inlet pipe section (1100) has a water inlet interface (1110). When projected along the axial direction of the water pump (100), the central axis (1120) of the water inlet pipe section (1100) passes through at least one fastening hole of the pump cover (1000).

4. The water pump (100) according to claim 1, characterized in that: The pump cover (1000) and the pump housing (2000) are positioned and connected via a first positioning assembly (6100); And / or, the pump housing (2000) and the motor assembly (3000) are positioned and connected via a second positioning assembly (6200); And / or, the motor assembly (3000) and the base (4000) are positioned and connected via a third positioning assembly (6300).

5. The water pump (100) according to claim 4, characterized in that: The pump cover (1000) is provided with a first positioning member (6110), and the pump housing (2000) is provided with a second positioning member (6120), and the first positioning member (6110) and the second positioning member (6120) constitute a first positioning assembly (6100) and can be plugged into each other; And / or, the pump housing (2000) is provided with a third positioning member (6210), the motor assembly (3000) is provided with a fourth positioning member (6220), and the third positioning member (6210) and the fourth positioning member (6220) constitute a second positioning assembly (6200) and can be plugged into each other; And / or, the motor assembly (3000) is provided with a fifth positioning member (6310), the base (4000) is provided with a sixth positioning member (6320), and the fifth positioning member (6310) and the sixth positioning member (6320) constitute a third positioning assembly (6300) and can be plugged into each other.

6. The water pump (100) according to claim 5, characterized in that: The first positioning member (6110) surrounds the fastening hole of the pump cover (1000), and the second positioning member (6120) surrounds the fastening hole of the pump housing (2000); And / or, the third positioning member (6210) surrounds the fastening hole of the pump housing (2000), and the fourth positioning member (6220) surrounds the fastening hole of the motor assembly (3000); And / or, the fifth positioning member (6310) surrounds the fastening hole of the motor assembly (3000), and the sixth positioning member (6320) surrounds the fastening hole of the base (4000).

7. The water pump (100) according to claim 6, characterized in that: One of the first positioning member (6110) and the second positioning member (6120) is a boss and the other is a recess; and / or, one of the third positioning member (6210) and the fourth positioning member (6220) is a boss and the other is a recess; And / or, one of the fifth positioning member (6310) and the sixth positioning member (6320) is a boss and the other is a groove.

8. The water pump (100) according to claim 1, characterized in that: The pump cover (1000) is provided with a seventh positioning member (6410), and the pump housing (2000) is provided with an eighth positioning member (6420) on a side facing the pump cover (1000), and the seventh positioning member (6410) and the eighth positioning member (6420) are positioned and connected; A ninth positioning member (6510) is provided on a side of the pump housing (2000) facing the motor assembly (3000), and a tenth positioning member (6520) is provided on the motor assembly (3000), and the ninth positioning member (6510) and the tenth positioning member (6520) are positioned and connected; Among them, the eighth positioning member (6420) and the ninth positioning member (6510) are different.

9. The water pump (100) according to claim 1, characterized in that: The pump housing (2000) comprises a pump housing body (2100), and a fastening hole of the pump housing (2000) is protruded relative to the pump housing body (2100) along the radial direction of the water pump (100); The motor assembly (3000) comprises a shielding sleeve (3100), the shielding sleeve (3100) comprises a shielding sleeve body (3110) and a fastening hole of the motor assembly (3000), and the fastening hole of the motor assembly (3000) is protruded relative to the shielding sleeve body (3110) along the radial direction of the water pump (100); Holes are respectively provided on the side of the pump housing (2000) facing the motor assembly (3000) and between the fastening hole of the pump housing (2000) and the pump housing body (2100), and on the side of the shielding sleeve (3100) facing the pump housing (2000) and between the fastening hole of the motor assembly (3000) and the shielding sleeve body (3110).

10. The water pump (100) according to claim 9, characterized in that: Excavated holes are respectively provided on opposite sides of a line connecting the fastening hole of the pump housing (2000) and the center of the pump housing (2000); And / or, holes are provided on opposite sides of a line between the fastening hole of the motor assembly (3000) and the center of the shielding sleeve (3100), respectively.

11. The water pump (100) according to claim 1, characterized in that: The pump cover (1000) has a water inlet interface (1110), and the pump housing (2000) has a water outlet interface (2400), and the water inlet interface (1110) and the water outlet interface (2400) are of different sizes.

12. A water heater, characterized in that: The water pump (100) comprises any one of claims 1 to 11.

Images