Steering noise reduction centrifugal water pump

Abstract

A steering noise reduction centrifugal water pump comprises a pump body, a volute and a driving impeller, the volute is arranged on the pump body, the driving impeller is arranged at the power output end of the pump body and located in the volute, and the steering noise reduction centrifugal water pump is characterized in that a steering rectification part is integrally formed in the water outlet direction of the volute; the steering rectification part is provided with a horizontal channel, a vertical channel and a flow dividing channel, the water inlet end of the horizontal channel is connected with the water outlet end of the volute, the water inlet end of the vertical channel is connected with the water outlet end of the tail end of the horizontal channel, and the water inlet end of the flow dividing channel is connected with the middle of the horizontal channel. The steering rectifying part can reduce the length of the outlet section of the water pump and can rectify to reduce loss, the speed, direction and turbulence of water flow are adjusted, and a noise transmission path is cut off.

Description

Technical Field

[0001] The utility model relates to a water pump, in particular to a centrifugal water pump which can be suitable for a gas water heater. Background Art

[0002] The zero cold water function of the gas water heater allows users to have hot water when they turn on the tap, but this requires a water pump to circulate the water so that the machine can heat the cold water in the pipe. At the same time, some users have low water flow and low water pressure, so a water pump is also used to increase the water flow. Therefore, the performance of the water pump plays a key role in the comfort of users' hot water use.

[0003] Existing water heaters generally use centrifugal pumps, which include a pump body, an impeller arranged on a pump body rotor, and a volute arranged on the periphery of the impeller. The volute has a water inlet port corresponding to the central cavity and an output port for receiving the water outlet end of the impeller.

[0004] In the existing centrifugal pumps, water channel noise has always been an industry problem, and the outlet end of the centrifugal pump often changes the flow channel angle, which is the source of noise. After the water flows through the driving impeller, the water flow speed is fast and turbulent. Generally, the volute outlet will have a straight flow channel of a certain length. This straight flow channel is for rectification; secondly, it is to reduce the impact of the flow channel change after the pump outlet on the overall work of the pump. If the length of the straight section at the pump outlet is too short, the pump head and the pump flow rate will be reduced. If it is too long, it will affect the appearance and the compactness of the overall structure. How to complete the turning and reduce the noise brought by the water outlet of the centrifugal pump has always been the research direction of technical personnel in this field.

[0005] In addition, when the gas water heater is used for a long time, scale will adhere to the inside of its pipes. Due to the long-term use of existing gas water heaters, the internal scale accumulates thickly, especially at the water outlet of the water pump, which makes it difficult to clean and causes pipe blockage, affecting the normal use of the water pump. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a centrifugal water pump with low noise after steering in view of the above technical status quo.

[0007] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a steering noise reduction centrifugal water pump, comprising a pump body, a volute and a driving impeller, the volute being arranged on the pump body, the driving impeller being arranged at the power output end of the pump body and being located in the volute, and characterized in that a steering rectification part is integrally formed in the water outlet direction of the volute, the steering rectification part having a horizontal channel, a vertical channel and a diversion channel, the water inlet end of the horizontal channel being connected to the water outlet end of the volute, the water inlet end of the vertical channel being connected to the terminal water outlet end of the horizontal channel, the water inlet end of the diversion channel being connected to the middle part of the horizontal channel, the horizontal channel being perpendicular to the vertical channel and the diversion channel; the caliber of the vertical channel is larger than the caliber of the horizontal channel.

[0008] The caliber of the diverting channel is smaller than that of the vertical channel. The vertical channel is used as the main channel, and the diverting channel is used as the auxiliary channel, which cooperate with each other to complete the diversion and rectification of the water flow.

[0009] The inner side of the steering rectifying part has a cavity, one side of the cavity has an inlet, the cavity forms the vertical channel, the inlet has the horizontal channel, and the diversion channel is laterally opened on the inlet. In this way, the impact of the water flow on the inner wall surface is relatively mild, so that a large amount of energy will not be lost, and the steering can be completed well in the vertical channel.

[0010] A pipe joint is provided on the water outlet port of the steering rectifying part, and the water flow direction of the inner cavity of the pipe joint is consistent with the water flow direction of the vertical channel. The pipe joint extends the water outlet end, is conducive to rectification, and reduces turbulence and noise.

[0011] An expansion zone is formed at the water inlet end of the pipe joint, and the diameter of the expansion zone is larger than the diameter of the vertical channel. The diameter in the water flow direction becomes larger, which is conducive to sorting and reduces the noise caused by turbulence.

[0012] Preferably, the water flow direction of the water outlet port of the pipe joint is perpendicular to the water flow direction of the inner cavity of the pipe joint.

[0013] In order to make the connection between the pipe joint and the pump body more firm and compact, a connecting ring is integrally formed on the side of the pipe joint close to the pump body, and the volute, the connecting ring and the pump body are sequentially connected as a whole by screws.

[0014] The pipe joint has a first cavity connected to the expansion zone and a second cavity connected to the first cavity, and the diameter of the first cavity is smaller than the diameter of the expansion zone and the diameter of the second cavity. The contraction design is also conducive to increasing the flow rate and ensuring the head.

[0015] The first cavity of the pipe joint is provided with a water softening impeller capable of preventing scale. The design of the scale prevention function is integrated into the pipe joint, and the structure is more compact, which is conducive to space arrangement.

[0016] The soft water impeller is made of IPSE alloy material, or the surface of the soft water impeller is coated with IPSE alloy material. IPSE multi-element alloy material is a special multi-element alloy (copper-based catalyst alloy) for scale inhibition and descaling. It is an alloy material prepared by high-temperature smelting of various metal elements with different electronegativity, mainly copper, zinc, and nickel. The multi-element alloy material is formed by strictly controlling the composition ratio of various elements and adopting special processing technology. The different potentials of different alloys are used to form a micro-electrochemical system, change the characteristics of water, inhibit the combination of calcium and magnesium with acid ions, and inhibit the formation of scale, thereby achieving a scale inhibition effect. At the same time, the scale is transformed from a dense calcite state to a loose aragonite state.

[0017] The soft water impeller is provided with a water hole, and a spiral blade for guiding water flow is formed at the water outlet corresponding to the water hole to ensure that the water flow is fully in contact with the soft water impeller.

[0018] Compared with the prior art, the advantages of the utility model are:

[0019] The steering and rectifying part can not only reduce the length of the outlet section of the water pump, but also rectify and reduce losses, adjust the speed, direction and turbulence of the water flow, and cut off the noise transmission path. After flowing through the driving impeller, it flows into the steering and rectifying part, where it is diverted and diverted. The water flows into the steering and rectifying part from the horizontal channel, part of the water flows into the diversion channel in advance, and the remaining water flows into the vertical channel. The water flows in the diversion channel and the vertical channel finally merge.

[0020] The vertical channel can complete a 90° turn, and the diversion channel can divert the water flow in advance, thereby reducing the impact of the turbulent and rapid water flow on the inner wall surface and preventing a large amount of energy from being lost. After the diversion, the speed of the water flow will be weakened, and the turn can be completed more gently in the vertical channel, reducing energy loss and also helping to reduce water flow noise and vibration noise.

[0021] The apertures of horizontal and vertical channels are gradually increased, and the pressure is released step by step. Each stage passes through a different frequency to further reduce the noise. At the same time, the space is gradually expanded, which can also better rectify and decelerate, reduce the generation of eddy currents, and help reduce noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of an embodiment.

[0023] Figure 2 for Figure 1 Exploded diagram of .

[0024] Figure 3 This is an enlarged view of the volute.

[0025] Figure 4 This is an enlarged view of the volute from another perspective.

[0026] Figure 5 for Figure 3 A three-dimensional cross-sectional view of .

[0027] Figure 6 This is an enlarged view of the soft water impeller. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] like Figure 1 and Figure 2 As shown, the steering noise reduction centrifugal water pump in this embodiment includes a pump body 1, a volute 11, a driving impeller 12, a water softening impeller 4 and a pipe joint 3. The volute 11 is arranged on the pump body 1, and the water inlet direction of the water inlet port 15 of the volute 11 is perpendicular to the water outlet direction. The driving impeller 12 is arranged at the power output end of the pump body 1 and is located in the volute 11. A steering rectifying part 13 is integrally formed in the water outlet direction of the volute 11. A pipe joint 3 is provided on the water outlet port 33 of the steering rectifying part 13. The water flow direction of the inner cavity of the pipe joint 3 is consistent with the water flow direction of the vertical channel 22.

[0030] Combination Figures 3 to 5 As shown, the steering rectifying part 13 has a horizontal channel 21, a vertical channel 22 and a diverter channel 23. The water inlet end of the horizontal channel 21 is connected to the water outlet end 111 of the volute 11, the water inlet end of the vertical channel 22 is connected to the terminal water outlet end of the horizontal channel 21, and the water inlet end of the diverter channel 23 is connected to the middle of the horizontal channel 21. The horizontal channel 21 is perpendicular to the vertical channel 22 and the diverter channel 23. The caliber of the vertical channel 22 is larger than that of the horizontal channel 21. The caliber of the diverter channel 23 is smaller than that of the vertical channel 22.

[0031] The steering rectifying portion 13 has a cavity inside, and one side of the cavity has an extension portion 14 . The cavity forms a vertical channel 22 . The extension portion 14 has a horizontal channel 21 . The flow dividing channel 23 is laterally opened on the extension portion 14 .

[0032] The water inlet end of the pipe joint 3 is formed with an expansion area 1a, the diameter of which is larger than the diameter of the vertical channel 22. The water flow direction of the water outlet port 33 of the pipe joint 3 is perpendicular to the water flow direction of the inner cavity of the pipe joint 3.

[0033] A connecting ring 34 is integrally formed on one side of the pipe joint 3 close to the pump body 1, and the volute 11, the connecting ring 34 and the pump body 1 are sequentially connected as a whole by screws 16. A water softening impeller 4 capable of preventing scale is arranged in the inner cavity of the pipe joint 3.

[0034] Combination Figure 6As shown, the soft water impeller 4 is provided with a water hole 51, and a spiral blade 52 for guiding water flow is formed at the water outlet of the water hole 51. The soft water impeller 4 is made of IPSE alloy material, or the surface of the soft water impeller 4 is coated with IPSE alloy material.

[0035] The steering and rectifying part can not only reduce the length of the outlet section of the water pump, but also rectify and reduce losses, adjust the speed, direction and turbulence of the water flow, and cut off the noise transmission path. After flowing through the driving impeller, it flows into the steering and rectifying part, where it is diverted and diverted. The water flows into the steering and rectifying part from the horizontal channel, part of the water flows into the diversion channel in advance, and the remaining water flows into the vertical channel. The water flows in the diversion channel and the vertical channel merge in the expansion area.

[0036] The vertical channel can complete a 90° turn, and the diversion channel can divert the water flow in advance, thereby reducing the impact of the turbulent and rapid water flow on the inner wall surface and preventing a large amount of energy from being lost. After the diversion, the speed of the water flow will be weakened, and the turn can be completed more gently in the vertical channel, reducing energy loss and also helping to reduce water flow noise and vibration noise.

[0037] The diameters of the horizontal channels and vertical channels to the expansion zone are gradually increased, and the pressure is released step by step. Each stage passes through a different frequency to further reduce the noise. At the same time, the space is gradually expanded, which can also better rectify and decelerate, reduce the generation of eddy currents, and help reduce noise.

Claims

1. A centrifugal water pump with steering noise reduction, comprising a pump body (1), a volute (11) and a driving impeller (12), wherein the volute (11) is arranged on the pump body (1), and the driving impeller (12) is arranged at the power output end of the pump body (1) and located in the volute (11), characterized in that A steering and rectifying portion (13) is integrally formed in the water outlet direction of the volute (11), and the steering and rectifying portion (13) comprises a horizontal channel (21), a vertical channel (22) and a diverting channel (23); the water inlet end of the horizontal channel (21) is connected to the water outlet end of the volute (11), the water inlet end of the vertical channel (22) is connected to the terminal water outlet end of the horizontal channel (21), the water inlet end of the diverting channel (23) is connected to the middle of the horizontal channel (21), and the horizontal channel (21) is perpendicular to the vertical channel (22) and the diverting channel (23); the caliber of the vertical channel (22) is larger than the caliber of the horizontal channel (21).

2. The steering noise reduction centrifugal water pump according to claim 1 is characterized in that The diameter of the diversion channel (23) is smaller than the diameter of the vertical channel (22).

3. The steering noise reduction centrifugal water pump according to claim 1 is characterized in that The steering and rectifying portion (13) has a cavity inside, and one side of the cavity has an extension portion (14). The cavity forms the vertical channel (22). The extension portion (14) has the horizontal channel (21). The diversion channel (23) is laterally opened on the extension portion (14).

4. The steering noise reduction centrifugal water pump according to claim 1 is characterized in that A pipe joint (3) is provided on the water outlet port (33) of the steering and rectifying portion (13), and the water flow direction of the inner cavity of the pipe joint (3) is consistent with the water flow direction of the vertical channel (22).

5. The steering noise reduction centrifugal water pump according to claim 4 is characterized in that An expansion area (1a) is formed at the water inlet end of the pipe joint (3), and the diameter of the expansion area (1a) is larger than the diameter of the vertical channel (22).

6. The steering noise reduction centrifugal water pump according to claim 5 is characterized in that The water flow direction of the water outlet port (33) of the pipe joint (3) is perpendicular to the water flow direction of the inner cavity of the pipe joint (3).

7. The steering noise reduction centrifugal water pump according to claim 5 is characterized in that A connecting ring (34) is integrally formed on one side of the pipe joint (3) close to the pump body (1), and the volute (11), the connecting ring (34) and the pump body (1) are sequentially connected as a whole via screws (16).

8. The steering noise reduction centrifugal water pump according to claim 5 is characterized in that A water softening impeller (4) capable of preventing scale is arranged in the inner cavity of the pipe joint (3).

9. The steering noise reduction centrifugal water pump according to claim 8, characterized in that The water softening impeller (4) is made of IPSE alloy material, or the surface of the water softening impeller (4) is coated with IPSE alloy material.

10. The steering noise reduction centrifugal water pump according to claim 8, characterized in that The soft water impeller (4) is provided with a water passage hole (51), and a spiral blade (52) for guiding water flow is formed at the water outlet end corresponding to the water passage hole.

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