CN210889477U

CN210889477U - Pump body, water pump and water heater of water pump

Info

Publication number: CN210889477U
Application number: CN201921169318.7U
Authority: CN
Inventors: 夏卫丽; 梁国荣; 张小林
Original assignee: Midea Group Co Ltd; Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-06-30
Anticipated expiration: 2029-07-23

Abstract

The embodiment of the utility model provides an in the embodiment provide a pump body, water pump and water heater of water pump. The pump body comprises a flow channel for liquid rotational flow, and the flow channel is gradually expanded from a first end of the flow channel along the rotational flow direction of the liquid to form a second end of the flow channel. The utility model discloses can guide liquid to the second end of runner along the runner that gradually expands to from the delivery port outflow, the runner that gradually expands has increased centrifugal force, reduces the delay of liquid in the runner, can reduce the resistance to liquid, improves the work efficiency of water pump.

Description

Pump body, water pump and water heater of water pump

Technical Field

The utility model relates to the field of mechanical equipment, especially, relate to a pump body, water pump and water heater of water pump.

Background

Water pumps are machines that deliver or pressurize fluid. It transfers the mechanical energy of the prime mover or other external energy to the liquid, causing the liquid energy to increase. At present, a water pump mostly adopts a cylindrical pump body, the centrifugal force generated when an impeller rotates is reduced by the design of a flow channel, and the wall body of the flow channel can cause resistance effect on liquid, so that the working efficiency of the water pump is reduced.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a pump body, water pump and use its water heater of water pump to solve or alleviate one or more technical problem among the prior art at least, or provide a profitable selection at least.

The utility model discloses an aspect provides a pump body of water pump, including the runner that supplies the liquid whirl, the runner is followed the first end of runner is followed the whirl direction of liquid is gradually expanded, in order to form the second end of runner.

In one embodiment, the pump body comprises an outlet pipe, the outlet pipe is communicated with the flow passage, a water outlet of the flow passage is arranged at the joint of the outlet pipe and the flow passage, and the second end of the flow passage is tangent to the lower edge of the water outlet.

In one embodiment, the first end of the flow passage is located above the water outlet.

In one embodiment, the divergent height of the second end of the flow channel from the first end of the flow channel is no greater than 20 mm.

In one embodiment, the pump body includes a water inlet pipe, the water inlet pipe is communicated with the flow passage, a water inlet of the flow passage is arranged at a joint of the water inlet pipe and the flow passage, and the flow passage is arranged around the water inlet.

The utility model discloses a second aspect provides a water pump. The water pump comprises a pump body of the water pump as in any one of the embodiments described above.

In an embodiment, the water pump further comprises a shielding sleeve, the shielding sleeve is arranged opposite to the water inlet pipeline of the pump body, and an inner cavity of the shielding sleeve is communicated with the flow channel.

In one embodiment, the water pump further comprises:

the impeller is arranged in the flow channel, and the rotation direction of the impeller is the same as the rotational flow direction of the liquid;

the permanent magnet is fixedly connected with the impeller;

the motor is arranged outside the shielding sleeve and comprises a stator and a shell, and a magnetic field is formed between the stator and the permanent magnet so that the permanent magnet rotates in the magnetic field; the shell is fixedly connected with the pump body.

In one embodiment, the shielding sleeve is made of a magnetic conductive material with a waterproof function; the pump body is made of a mixed material of polyphenylene sulfide and glass fiber or a metal material, and the metal material comprises brass and cast iron.

The third aspect of the present invention provides a water heater. The water heater includes a water pump as in any of the embodiments described above.

Above-mentioned technical scheme can lead the second end to the runner with liquid along divergent runner to flow out from the delivery port, divergent runner has increased centrifugal force, reduces the detention of liquid in the runner, can reduce the resistance to liquid, improves the work efficiency of water pump.

The foregoing summary is provided for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will be readily apparent by reference to the drawings and following detailed description.

Drawings

In the drawings, like reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily to scale. It is appreciated that these drawings depict only some embodiments in accordance with the disclosure and are not to be considered limiting of its scope.

Fig. 1 is a sectional view of the pump body in the embodiment of the present invention.

Fig. 2 is a sectional perspective view of the pump body in the embodiment of the present invention.

Fig. 3 is a cross-sectional view of the pump body in an embodiment of the present invention.

Fig. 4 is a perspective view of the pump body of the water pump in the embodiment of the present invention.

Fig. 5 is a cross-sectional view of the water pump in the embodiment of the present invention.

Fig. 6 is a perspective view of the water pump in the embodiment of the present invention.

Reference numerals:

100. a pump body; an extension wall 101; 102, a swirling flow duct;

110. a flow channel; a first end of a flow channel; a second end of the flow channel;

120. a water outlet pipeline; a water outlet 121; a water inlet pipe;

131. a water inlet; 140. a shielding sleeve; 150 connecting piece;

160. and a permanent magnet.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

The pump body of the water pump and the water pump according to an embodiment of the present invention will be described below with reference to fig. 1 to 6.

Referring to fig. 1 to 3, a pump body 100 of the water pump of the present embodiment includes a flow passage 110 for swirling a liquid. The liquid may be rotated in the flow channel 110 to obtain a centrifugal force and then flow out. The flow passage 110 diverges from a first end 111 of the flow passage in the direction of the swirling flow of the liquid to form a second end 112 of the flow passage. That is, in the present embodiment, the flow channel 110 is spiral. For example: referring to fig. 3, in a cross-sectional view of the flow channel 110, the flow channel 110 (the first end 111 of the flow channel to the second end 112 of the flow channel is in a spiral).

In one embodiment, referring to fig. 1 and 4, the pump body 100 includes an outlet conduit 120 and an inlet conduit 130. The inlet conduit 130, the flow channel 110 and the outlet conduit 120 are in communication, and liquid enters the flow channel 110 from the inlet conduit 130 and then exits through the outlet conduit 120. In one example, the flow passage 110 is specifically formed in the swirl tube 102 of the pump body 100. That is, the swirling duct 102 may include the flow passage 120 and a portion (i.e., the extension wall 101) extending in the width direction of the flow passage 120. The extension wall 101 is cylindrical for connection to other components, such as a shield 140 described below.

In this embodiment, the divergent height may be a height difference between the flow channel 110 and the extension wall 101, and the divergent height may be a height difference between the first end 111 of the flow channel and the extension wall 101 gradually increases along the swirling direction of the liquid, so as to form the second end 112 of the flow channel. Specifically, the first end 111 of the flow channel is tangent to the extension wall 101, the extension wall 101 has no height difference with the first end 111 of the flow channel, and then the height difference of the flow channel 110 and the extension wall 101 gradually increases to form the second end 112 of the flow channel.

When the liquid rotates from the first end 111 of the flow channel to the second end 112 of the flow channel, the divergent flow channel 110 reduces the resistance of the liquid to flow, and meanwhile, a divergent height is generated between the first end 111 of the flow channel and the second end 112 of the flow channel, so that the centrifugal force obtained when the liquid rotates in the flow channel 110 is increased, the liquid is discharged out of the pump body 100 quickly, and the working efficiency of the water pump is improved.

In addition, the liquid in the flow channel 110 is guided from the first end 111 of the flow channel to the second end 112 of the flow channel and flows out, and the divergent flow channel 110 can increase the centrifugal force, reduce the retention of the liquid in the flow channel 110, and further improve the working efficiency of the water pump.

The axial width of the flow channel 110 is not limited in this embodiment. The circumferential angle of the divergent section from the first end 111 to the second end 112 of the flow channel is not limited in this embodiment, and may be, for example, approximately 360 °. In one example, referring to fig. 3, the spiral formed from the first end 111 of the flow channel to the second end 112 of the flow channel may be in the shape of an unclosed arc to form a micro-spiral or a volute.

In one embodiment, referring to FIG. 3, the divergent height of the second end 112 of the flow channel from the first end 111 of the flow channel is no greater than 20 millimeters (mm), i.e., the flow channel 110 is in the shape of a micro-spiral. Therefore, the resistance of the flow channel 110 to the liquid rotation can be further reduced, so that more centrifugal force can be obtained when the liquid rotates, and the water supply capacity of the water pump is improved.

In one embodiment, referring to fig. 2 and 3, a water inlet 131 is provided at a connection point of the water inlet pipe 130 and the flow channel 110, and the liquid in the water inlet pipe 130 can enter the flow channel 110 through the water inlet 131; the joint of the outlet pipe 120 and the flow channel 110 is provided with a water outlet 121, and the liquid in the flow channel 110 enters the outlet pipe 120 through the water outlet 121 and is discharged out of the pump body 100.

In one embodiment, the flow channel 110 is disposed around the water inlet 131 such that the inlet water can rotate along the flow channel 110 and the outlet conduit 120 is disposed perpendicular to the axis of the flow channel 110.

Preferably, referring to fig. 1 and 2, the second end 112 of the flow channel is disposed near the water outlet 121, so that the liquid can be conveniently discharged from the water outlet 121 after rotating on the flow channel 110 for a certain angle.

Further, the second end 122 of the flow channel is tangent to the lower edge of the water outlet 121, so that the liquid passing through the second end 112 of the flow channel can be directly discharged from the water outlet 121 without generating resistance, thereby improving the working efficiency of the water pump.

Further, referring to fig. 1, the first end 111 of the flow channel is located above the water outlet 121, so that the liquid directly rotates along the flow channel 110 from above the water outlet 121 to below the water outlet 121, thereby increasing centrifugal force, facilitating liquid removal, and increasing the working efficiency of the water pump.

In a second aspect, the present embodiment further provides a water pump.

Referring to fig. 5 and 6, the water pump of the present embodiment includes the pump body 100 of the above embodiment. The water pump of this embodiment may further include a shield 140. The shielding sleeve 140 is disposed opposite to the water inlet pipe 130 of the pump body 100, that is, the shielding sleeve 210 and the water inlet pipe 130 are respectively located at two sides of the flow passage 110. The inner cavity of the shield 140 communicates with the flow passage 110 to form a sealed space.

Further, as shown in fig. 4 and 5, the shield 140 and the extension wall 101 of the pump body 100 may be connected by screw-fitting, so that the space between the shield 140 and the water inlet 131 and the flow passage 110 are closed as a sealed space.

In one embodiment, the water pump of this embodiment further includes an impeller (not shown). The impeller is disposed in the pump body 100, and the rotation direction of the impeller is the same as the swirling direction of the liquid, that is, the rotation direction of the impeller is the same as the direction in which the flow passage 100 is gradually expanded from the first end 111 of the flow passage to the second end 112 of the flow passage along the extension wall 101 of the pump body 100.

The matching performance of the impeller and the pump body 100 in this embodiment is compared with that of the impeller and the cylindrical pump body in the prior art, and the specific comparison result refers to table 1.

Table 1

Table 1 is a result obtained by simulation, where H (m) may represent a pump head, E may represent a pump efficiency, Imp H (m) may represent an impeller head, and Imp E may represent an impeller efficiency.

Referring to table 1, when the impeller of the water pump of this embodiment rotates to drive liquid to rotate, the first end 111 of the liquid along the flow channel is rotated to the second end 112 of the flow channel, so that the water pump has better matching performance, the centrifugal force of the liquid rotation is increased, a higher lift is obtained, and the working efficiency of the water pump is increased. The impeller may be of a construction commonly used by those skilled in the art and will not be described in detail herein.

In one embodiment, referring to fig. 5 and 6, the water pump of the present embodiment further includes a permanent magnet 160 and a motor (not shown).

The permanent magnet 160 is fixedly connected to the impeller. For example: the permanent magnet 160 and the impeller may be coupled to the pump body 100 by a coupling 150. The motor is disposed outside the shielding case 140 such that the shielding case 140 separates the motor from the flow passage 110 to prevent the motor from being damaged by liquid contacting the motor. The motor includes a stator and a housing. The permanent magnet 160 and the impeller are used as a rotor, and a magnetic field is formed between the stator and the permanent magnet 160, so that the permanent magnet 160 rotates in the magnetic field formed between the stator and the permanent magnet 160, and the impeller is driven to rotate; the housing is fixedly coupled to the pump body 100 so that the motor is integrally coupled to the pump body 100.

Further, the shielding sleeve 140 is made of a magnetic conductive material with a waterproof function so as to block the liquid from contacting the motor, and the magnetic conductive material can reduce the influence of the shielding sleeve 140 on the magnetic field between the stator and the permanent magnet 160.

In one embodiment, the pump body 100 may be made of a mixed material of Polyphenylene sulfide (PPS) and glass fibers. The pump body 100 may also be made of a metallic material, such as brass or cast iron. The present embodiment is not limited. For example: the metallic material also includes other alloys, so long as the strength and hardness are satisfactory, and are within the scope of this patent.

In a third aspect, the present embodiment further provides a water heater. The water heater includes a water pump as in any of the embodiments described above. The water pump of this embodiment water heater can provide stable pressure and velocity of flow for the hot water of recycling, improves the availability factor of water heater. Other configurations of the water heater of the present embodiment can be adopted by various technical solutions known to those skilled in the art now and in the future, and will not be described in detail here.

The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various changes or substitutions within the technical scope of the present invention, which should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The above disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described above. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Claims

1. A pump body of a water pump is characterized by comprising a flow channel for liquid rotational flow, wherein the flow channel is gradually expanded from a first end of the flow channel along the rotational flow direction of the liquid to form a second end of the flow channel.

2. The pump body of claim 1, wherein the pump body includes an outlet conduit in communication with the flow passage, and wherein a junction of the outlet conduit and the flow passage provides an outlet of the flow passage, and wherein the second end of the flow passage is tangential to a lower edge of the outlet.

3. The pump body of claim 2, wherein the first end of the flow passage is positioned above the water outlet.

4. The pump body of claim 1, wherein the divergent height of the second end of the flow passage from the first end of the flow passage is no greater than 20 millimeters.

5. The pump body of claim 1, wherein the pump body includes an inlet conduit in communication with the flow passage, and wherein a junction of the inlet conduit and the flow passage provides an inlet to the flow passage, the flow passage being disposed around the inlet.

6. A water pump, characterized in that it comprises a pump body according to any one of claims 1 to 5.

7. The water pump of claim 6, further comprising a shield disposed opposite the inlet conduit of the pump body, wherein an inner cavity of the shield is in communication with the flow passage.

8. The water pump of claim 7, further comprising:

the permanent magnet is fixedly connected with the impeller;

9. The water pump according to claim 8, wherein the shield is made of a magnetically conductive material having a waterproof effect; the pump body is made of a mixed material of polyphenylene sulfide and glass fiber or a metal material, and the metal material comprises brass and cast iron.

10. A water heater comprising a water pump as claimed in any one of claims 6 to 9.