Pump cover, water pump and water heater

Abstract

This utility model provides a pump cover, a water pump, and a water heater. The pump cover is used for the water pump, which includes a housing and a rotating component. At least a portion of the rotating component is disposed within the housing. The pump cover is placed over the housing and includes: a cover body, which includes a cavity with a water outlet on its side wall; a water inlet channel disposed in the cover body and communicating with the cavity; and a water outlet channel disposed in the cover body and communicating with the cavity through the water outlet. Along the circumference of the rotating component, the side wall of the cavity includes a first wall surface and a second wall surface. The second wall surface has a guide wall that protrudes radially from the first wall surface along the rotating component. The guide wall includes a first end and a second end that are circumferentially opposite each other. At least a portion of the water outlet is located on the first wall surface, such that at least a portion of the water outlet is located between the first end and the second end. The pump cover provided by this utility model increases the water flow rate to the water outlet while reducing vibration and noise caused by pressure pulsation.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and more specifically, to a pump cover, a water pump, and a water heater. Background Technology

[0002] Currently, gas water heaters with zero cold water function need to have a water pump added to the inlet pipe to keep the water flowing at a certain flow rate in order to avoid discharging cold water.

[0003] However, in the water pumps of the related technologies, the water flow inside the pump cover cavity is easily circulated under the action of the rotating parts, and does not flow out from the outlet, resulting in a smaller flow rate of water at the outlet of the pump cover. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the first aspect of this utility model provides a pump cover.

[0006] A second aspect of this utility model also provides a water pump.

[0007] A third aspect of this utility model also provides a water heater.

[0008] In view of the above, the first aspect of this utility model provides a pump cover for a water pump. The water pump includes a housing and a rotating component, at least a portion of which is disposed within the housing. The pump cover is disposed on the housing. The pump cover includes: a cover body, which includes a cavity, and the side wall of the cavity has a water outlet; an inlet channel disposed on the cover body and communicating with the cavity; and an outlet channel disposed on the cover body and communicating with the cavity through the water outlet. Along the circumference of the rotating component, the side wall of the cavity includes a first wall surface and a second wall surface. The second wall surface has a guide wall, which protrudes radially from the first wall surface along the rotating component. The guide wall includes a first end and a second end that are circumferentially opposite each other. At least a portion of the water outlet is located on the first wall surface, such that at least a portion of the water outlet is located between the first end and the second end.

[0009] The pump cover provided by this utility model includes a cover body, an inlet channel, and an outlet channel. The cover body includes a cavity. At least a portion of the inlet is disposed on a first wall surface of the cavity sidewall, and a guide wall is disposed on a second wall surface of the cavity sidewall. The guide wall protrudes radially from the first wall surface, creating a height difference between the guide wall and the first wall surface relative to the axis. At least a portion of the outlet is disposed on the first wall surface, and the at least portion of the outlet is located between the first end and the second end of the guide wall, thus creating a height difference between the at least portion of the outlet and the guide wall. In other words, the guide wall and the at least portion of the outlet form a stepped structure. In this way, when the water flows from the outlet to the guide wall, the guide wall can act as a barrier, preventing the water from circulating within the cavity and allowing more water to flow to the outlet, increasing the outlet flow rate. It also reduces the vibration and noise caused by pressure pulsation.

[0010] In some embodiments, optionally, from the first end to the second end, at least a portion of the guide wall gradually increases the radial distance from the axis of the rotating member, wherein a portion of the outlet is disposed on the first wall surface and another portion of the outlet is disposed at the first end of the guide wall.

[0011] In this embodiment, the guide wall includes a first end and a second end. From the first end to the second end, the radial distance between at least a portion of the guide wall and the axis of the rotating component gradually increases, causing at least a portion of the guide wall to gradually move away from the axis from the first end to the second end. This increases the pressure of the water flowing from the first end to the second end within the space corresponding to the second wall surface, resulting in a higher pressure when the water flows from the second end to the outlet corresponding to the first wall surface, thus increasing the water flow rate towards the outlet. Simultaneously, since the guide wall protrudes radially from the first wall surface, a portion of the outlet is located on the first wall surface, and the other portion is located at the first end of the guide wall. This allows the first end of the guide wall to surround a portion of the outlet's periphery, thereby blocking backflow around the outlet and improving the backflow prevention effect, further increasing the water flow rate towards the outlet.

[0012] In some embodiments, optionally, at least a portion of the guide wall is arranged in a helical shape relative to the axis of the rotating member.

[0013] In this embodiment, at least a portion of the guide wall is arranged in a spiral shape relative to the axis of the rotating component. The spiral guide wall can directionally guide the water flow when the water pump is running, and the flow rate of the outlet is increased by utilizing the guiding characteristics of the spiral structure.

[0014] In some embodiments, optionally, the guide wall includes: a first guide wall, which is spirally arranged relative to the axis, with a second end disposed on the first guide wall; a second guide wall, which is circumferentially connected to the other end of the first guide wall, with a first end disposed on the second guide wall; wherein the radial distance between the second end and the axis is greater than the radial distance between the other end of the first guide wall and the axis; the second guide wall is inclined from the first end to the end connected to the first guide wall in a direction closer to the axis, and the other part of the outlet is disposed on the second guide wall.

[0015] In this embodiment, the guide wall includes a first guide wall and a second guide wall, which are connected circumferentially. The second end is located on the first guide wall, and the first end is located on the second guide wall. The first guide wall is a curved surface spirally arranged relative to the axis to guide the flow direction of the medium within the cavity. The second guide wall gradually slopes towards the axis from the first end to the end connected to the first guide wall, allowing for a smooth transition from the first end to the first guide wall. This avoids eddies in the water flow at the first end and prevents noise caused by the medium impacting the first end when it flows through the cavity. Simultaneously, placing another portion of the outlet on the second guide wall increases the water flow rate towards the outlet.

[0016] In some embodiments, the second end may be spaced apart from the outlet or may surround another portion of the outlet.

[0017] In this embodiment, the second end is spaced apart from the outlet, allowing the medium inside the cavity to flow along the guide wall to the first wall and then to the outlet within the first wall. Alternatively, the second end can be directly surrounding another part of the outlet, allowing the medium inside the cavity to flow directly along the guide wall to the outlet, thus increasing the water output of the outlet.

[0018] In some embodiments, the inner wall of the water outlet channel is optionally tangential to the first wall surface at the water outlet.

[0019] In this embodiment, the water outlet channel is connected to the cavity through the water outlet, and the water outlet is located inside the first wall surface of the cavity sidewall. The inner sidewall of the water outlet channel is set to be tangent to the first wall surface at the water outlet, that is, the water outlet is located at the tangent point between the water outlet channel and the cavity, so that the water flow in the cavity can flow smoothly to the water outlet, reducing the resistance of the water flow to the water outlet, thereby improving the water outlet efficiency in the cavity.

[0020] In some embodiments, the second wall surface is optionally provided with a guide boss, the guide boss is arranged around the axis of the rotating member, and the side of the guide boss facing the axis is provided with a guide wall.

[0021] In this embodiment, a flow guide protrusion is provided in the second wall surface. The flow guide protrusion protrudes in the axial direction. That is, the inner sidewall of the cavity is provided with a flow guide protrusion protruding from the inner sidewall of the cavity. The flow guide wall is provided on the flow guide protrusion. Thus, while increasing the water flow rate, it is not necessary to change the overall appearance of the pump cover, which makes it easier to manufacture the pump cover.

[0022] In some embodiments, optionally, the diameter of the end of the water outlet channel connected to the water outlet is greater than or equal to 0.5 mm and less than or equal to 5 mm; and / or the diameter of the water outlet channel gradually increases from the end connected to the water outlet to the end away from the water outlet.

[0023] In this embodiment, the diameter of the end of the water outlet channel connected to the water outlet is greater than or equal to 0.5 mm and less than or equal to 5 mm. This reduces the cross-sectional area of ​​the water outlet channel, thereby increasing the head of the water flow within the channel, which in turn increases the distance the water travels. This ensures that the water still has sufficient pressure when it reaches the outlet of the water system, thus improving the water output. Optionally, the diameter of the water outlet channel gradually increases from the end connected to the water outlet to the end furthest from the outlet. This gradual widening of the water outlet channel from the outlet to the end furthest from the outlet reduces the flow resistance within the channel, increases the flow rate, and maintains the water pressure.

[0024] In some embodiments, the pump cover may optionally include: a water outlet connector connected to the cover body, the water outlet connector including a water outlet channel; and a water inlet connector connected to the cover body, the water inlet connector including a water inlet channel; wherein the inner or outer sidewall of the water inlet connector is provided with at least two grooves, and a sealing ring is provided in each of the at least two grooves.

[0025] In this embodiment, the pump cover includes an inlet connector and an outlet connector to connect the pump cover to other components. The inlet connector has at least two grooves, each containing a sealing ring, achieving a double-layer seal and improving its sealing effect. When the outer wall of the inlet connector has a groove, it acts as a male connector to connect to the water supply end, improving the sealing effect between the inlet connector and the water supply end. When the inner wall of the inlet connector has a groove, it acts as a female connector to connect to the water supply end, further improving the sealing effect between the inlet connector and the water supply end.

[0026] According to a second aspect of the present invention, a water pump is also provided, comprising: a housing; a rotating member, at least partially disposed within the housing; and a pump cover as described in any of the preceding claims, the pump cover being disposed on the housing.

[0027] The water pump provided in the second aspect of this utility model, having included the pump cover proposed in any of the above embodiments, has all the beneficial effects of the pump cover.

[0028] In some embodiments, optionally, along the rotation direction of the rotating member, within the second wall surface, the first end is located upstream of the second end.

[0029] In this embodiment, along the rotation direction of the rotating member, the first end is located upstream of the second end within the second wall surface, causing the radial distance between at least a portion of the guide wall and the axis to gradually increase along the rotation direction of the rotating member. This causes the water flow in the cavity to flow from the first end to the second end within the space corresponding to the second wall surface, thus guiding the water flow. At the same time, it also causes the water flow to flow from the second end to the first end within the space corresponding to the first wall surface. Consequently, the water flow is blocked at the first end, causing more water to flow towards the outlet, increasing the water output, and also preventing backflow.

[0030] According to a third aspect of the present invention, a water heater is also provided, comprising: a pump cover as provided in any of the first aspects; or a water pump as provided in any of the second aspects.

[0031] The water heater provided in the third aspect of this utility model, because it includes the pump cover or water pump proposed in any of the above embodiments, has all the beneficial effects of the pump cover or water pump.

[0032] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention. Attached Figure Description

[0033] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0034] Figure 1 One of the structural schematic diagrams of a pump cover according to an embodiment of the present invention is shown;

[0035] Figure 2 A second schematic diagram of the pump cover according to an embodiment of the present invention is shown;

[0036] Figure 3 The third schematic diagram shows the structure of the pump cover according to one embodiment of the present invention;

[0037] Figure 4 The fourth schematic diagram shows the structure of the pump cover according to one embodiment of the present invention;

[0038] Figure 5 The fifth schematic diagram shows the structure of the pump cover according to an embodiment of the present invention;

[0039] Figure 6 The sixth schematic diagram shows the structure of the pump cover according to an embodiment of the present invention;

[0040] Figure 7 One of the structural schematic diagrams of a water pump according to an embodiment of the present invention is shown;

[0041] Figure 8 The second schematic diagram shows the structure of a water pump according to one embodiment of the present invention.

[0042] in, Figures 1 to 8 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0043] 1. Pump cover, 10. Cover body, 100. Cavity, 102. First wall, 104. Second wall, 106. Outlet, 108. Guide wall, 1082. First end, 1084. Second end, 1086. First guide wall, 1088. Second guide wall, 109. Guide boss, 12. Inlet channel, 120. Groove, 14. Outlet channel, 16. Inlet connector, 18. Outlet connector, 2. Rotating component. Detailed Implementation

[0044] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0045] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0046] The following reference Figures 1 to 8 This invention describes a pump cover proposed according to some embodiments of the present invention.

[0047] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8As shown, according to one embodiment of the present invention, a pump cover 1 is provided. The pump cover 1 is used for a water pump. The water pump includes a housing and a rotating component 2. At least a portion of the rotating component 2 is disposed within the housing. The pump cover 1 covers the housing. The pump cover 1 includes: a cover body 10, which includes a cavity 100. The side wall of the cavity 100 is provided with a water outlet 106; a water inlet channel 12, which is disposed in the cover body 10 and communicates with the cavity 100; and a water outlet channel 14, which is disposed in the cover body 10 and communicates with the cavity 100 through the water outlet 106. 00 are connected; wherein, along the circumference of the rotating member 2, the sidewall of the cavity 100 includes a first wall surface 102 and a second wall surface 104, the second wall surface 104 is provided with a guide wall 108, the guide wall 108 protrudes radially from the first wall surface 102 along the rotating member 2, the guide wall 108 includes a first end 1082 and a second end 1084 that are circumferentially opposite each other, at least a portion of the outlet 106 is located on the first wall surface 102, so that at least a portion of the outlet 106 is located between the first end 1082 and the second end 1084.

[0048] The pump cover 1 provided by this utility model includes a cover body 10, an inlet channel 12, and an outlet channel 14. The cover body 10 includes a cavity 100. At least a portion of the inlet is disposed on a first wall surface 102 of the side wall of the cavity 100, and a guide wall 108 is disposed on a second wall surface 104 of the side wall of the cavity 100. The guide wall 108 protrudes radially from the first wall surface 102, such that there is a height difference between the guide wall 108 and the first wall surface 102 relative to the axis. At least a portion of the outlet 106 is disposed on the first wall surface 102, and at least a portion of the outlet 106... Located between the first end 1082 and the second end 1084 of the guide wall 108, at least a portion of the outlet 106 has a height difference with the guide wall 108, that is, the guide wall 108 and at least a portion of the outlet 106 form a stepped structure. In this way, when the water flows from the outlet 106 to the guide wall 108, the guide wall 108 can act as a blockage to prevent the water from circulating in the cavity 100, so that more water flows to the outlet 106, increasing the flow rate of the outlet 106, and at the same time reducing the vibration and noise caused by pressure pulsation.

[0049] It should be noted that the guide wall 108 protrudes into the cavity 100 along the radial direction of the rotating member 2, extending from the first wall surface 102.

[0050] like Figure 2 and Figure 4 As shown, in some embodiments, optionally, from the first end 1082 to the second end 1084, the radial distance between at least a portion of the guide wall 108 and the axis of the rotating member 2 gradually increases, wherein a portion of the outlet 106 is disposed on the first wall surface 102, and another portion of the outlet 106 is disposed on the first end 1082 of the guide wall 108.

[0051] In this embodiment, the guide wall 108 includes a first end 1082 and a second end 1084. From the first end 1082 to the second end 1084, the radial distance between at least a portion of the guide wall 108 and the axis of the rotating member 2 gradually increases, so that at least a portion of the guide wall 108 gradually moves away from the axis in the direction from the first end 1082 to the second end 1084. This increases the pressure of the water flowing from the first end 1082 to the second end 1084 in the space corresponding to the second wall surface 104, and consequently, the pressure of the water flowing from the second end 1084 to the outlet 106 corresponding to the first wall surface 102 is greater, thereby increasing the water flow rate to the outlet 106. Meanwhile, since the guide wall 108 protrudes radially from the first wall surface 102, a portion of the outlet 106 is disposed on the first wall surface 102, and another portion of the outlet 106 is disposed at the first end 1082 of the guide wall 108. This allows the first end 1082 of the guide wall 108 to surround a portion of the outlet 106, thereby blocking backflow around the outlet 106 and improving the backflow blocking effect, thus increasing the water flow rate into the outlet 106.

[0052] like Figure 1 As shown, in some embodiments, optionally, at least a portion of the guide wall 108 is arranged in a spiral shape relative to the axis of the rotating member 2.

[0053] In this embodiment, at least a portion of the guide wall 108 is arranged in a spiral shape relative to the axis of the rotating member 2. The spiral guide wall 108 can guide the water flow in a directional manner when the water pump is running. By utilizing the guiding characteristics of the spiral structure, the water flow rate of the outlet 106 is increased.

[0054] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, the guide wall 108 includes: a first guide wall 1086, which is spirally arranged relative to the axis, with a second end 1084 disposed on the first guide wall 1086; a second guide wall 1088, which is circumferentially connected to the other end of the first guide wall 1086, with a first end 1082 disposed on the second guide wall 1088; wherein, the radial distance between the second end 1084 and the axis is greater than the radial distance between the other end of the first guide wall 1086 and the axis; the second guide wall 1088 is inclined from the first end 1082 to the end connected to the first guide wall 1086 towards the axis, and another part of the outlet 106 is disposed on the second guide wall 1088.

[0055] In this embodiment, the flow guide wall 108 includes a first flow guide wall 1086 and a second flow guide wall 1088, which are connected circumferentially. A second end 1084 is located on the first flow guide wall 1086, and a first end 1082 is located on the second flow guide wall 1088. The first flow guide wall 1086 is a curved surface spirally arranged relative to the axis to guide the flow direction of the medium within the cavity 100. The second flow guide wall 1088 is gradually inclined towards the axis from the first end 1082 to the end connected to the first flow guide wall 1086, allowing a smooth transition from the first end 1082 to the first flow guide wall 1086. This prevents eddies from forming at the first end 1082 and avoids noise caused by the medium flowing through the cavity 100 impacting the first end 1082. Meanwhile, setting another part of the outlet 106 on the second guide wall 1088 can increase the water flow rate to the outlet 106.

[0056] Alternatively, the guide wall 108 may gradually move away from the axis from the first end 1082 to the second end 1084, that is, the entire guide wall 108 is a spiral-shaped curved surface.

[0057] In some embodiments, the second end 1084 may be spaced apart from the outlet 106 or the second end 1084 may surround another portion of the periphery of the outlet 106.

[0058] In this embodiment, the second end 1084 is spaced apart from the outlet 106, so that the medium in the cavity 100 flows along the guide wall 108 to the first wall 102, and then flows to the outlet 106 in the first wall 102. Of course, the second end 1084 can also be directly arranged around another part of the periphery of the outlet 106, so that the medium in the cavity 100 flows directly along the guide wall 108 to the outlet 106, thereby increasing the water output of the outlet 106.

[0059] like Figure 4 As shown, in some embodiments, optionally, the inner wall of the water outlet channel 14 is tangent to the first wall surface 102 at the water outlet 106.

[0060] In this embodiment, the water outlet channel 14 is connected to the cavity 100 through the water outlet 106, and the water outlet 106 is located inside the first wall surface 102 of the side wall of the cavity 100. The inner side wall of the water outlet channel 14 is configured to be tangent to the first wall surface 102 at the water outlet 106, that is, the water outlet 106 is located at the tangent point between the water outlet channel 14 and the cavity 100, thereby enabling the water flow in the cavity 100 to flow smoothly to the water outlet 106, reducing the resistance of the water flow to the water outlet 106, and thus improving the water outlet efficiency of the water flow in the cavity 100.

[0061] It should be noted that when the fluid in the cavity 100 flows to the location of the outlet 106, it tends to flow tangentially. Therefore, the inner wall of the water outlet channel 14 is tangential to the first wall surface 102 at the outlet 106, so that the water flows directly to the outlet 106.

[0062] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, the second wall surface 104 is provided with a flow guide boss 109, the flow guide boss 109 is arranged around the axis of the rotating member 2, and the flow guide boss 109 is provided with a flow guide wall 108 on the side facing the axis.

[0063] In this embodiment, a flow guide protrusion 109 is provided in the second wall surface 104. The flow guide protrusion 109 protrudes in the axial direction. That is, the inner side wall of the cavity 100 is provided with a flow guide protrusion 109 protruding from the inner side wall of the cavity 100. The flow guide wall 108 is provided on the flow guide protrusion 109. Thus, while increasing the water flow rate, it is not necessary to change the overall appearance of the pump cover 1, which makes it easier to manufacture the pump cover 1.

[0064] It is understandable that by setting the flow guide protrusion 109 in the cavity 100, the wall thickness of the part of the cover body 10 corresponding to the flow guide wall 108 changes. On the one hand, this improves the overall strength of the cover body 10 and avoids the service life problem caused by the spiral design. On the other hand, the change in thickness makes the first end 1082 closer to the axis at the outlet 106, thereby making the first end 1082 block the fluid at the outlet 106 and improving the problem of backflow at the outlet 106.

[0065] Optionally, the guide boss 109 and the pump cover 1 are an integral structure.

[0066] Alternatively, the inner wall corresponding to the second wall surface 104 of the cavity 100 can be set as a spiral structure as a whole, that is, the cover body 10 is set as a spiral structure as a whole without changing the overall wall thickness.

[0067] like Figure 3 As shown, in some embodiments, optionally, the diameter of the end of the water outlet channel 14 connected to the water outlet 106 is greater than or equal to 0.5 mm and less than or equal to 5 mm; and / or the diameter of the water outlet channel 14 gradually increases from the end connected to the water outlet 106 to the end away from the water outlet 106.

[0068] In this embodiment, the diameter of the end of the water outlet channel 14 connected to the water outlet 106 is greater than or equal to 0.5 mm and less than or equal to 5 mm. This reduces the cross-sectional area of ​​the water outlet channel 14, thereby increasing the head of the water flow within the water outlet channel 14, which in turn increases the distance the water flows. This ensures that the water still has significant pressure when it reaches the outlet of the water system, thus improving the water output effect. Optionally, the diameter of the water outlet channel 14 gradually increases from the end connected to the water outlet 106 to the end of the water outlet channel 14 away from the water outlet 106. This gradual widening of the water outlet channel 14 from the water outlet 106 to the end away from the water outlet 106 reduces the flow resistance of the water within the water outlet channel 14, increases the water flow rate, and maintains the water pressure.

[0069] It should be noted that the diameter of the water outlet channel 14 is the diameter of the channel through which the water supply flows.

[0070] Optionally, the diameter of the end of the water outlet channel 14 connected to the water outlet 106 is greater than or equal to 1 mm and less than or equal to 2 mm.

[0071] like Figure 5 and Figure 6 As shown, in some embodiments, optionally, the pump cover 1 further includes: a water outlet connector 18 connected to the cover body 10, the water outlet connector 18 including a water outlet channel 14; and a water inlet connector 16 connected to the cover body 10, the water inlet connector 16 including a water inlet channel 12; wherein, the inner or outer side wall of the water inlet connector 16 is provided with at least two grooves 120, and a sealing ring is provided in each of the at least two grooves 120.

[0072] In this embodiment, the pump cover 1 includes an inlet connector 16 and an outlet connector 18 to connect the pump cover 1 to other components. The inlet connector 16 has at least two grooves 120, each containing a sealing ring, achieving a double-layer seal and improving its sealing effect. When the inlet connector 16 has grooves 120 on its outer wall, it acts as a male connector to connect to the water supply end, improving the sealing effect between the inlet connector 16 and the water supply end. When the inlet connector 16 has grooves 120 on its inner wall, it acts as a female connector to connect to the water supply end, further improving the sealing effect between the inlet connector 16 and the water supply end.

[0073] It is understandable that at least two concentric grooves 120 are spaced apart along the length of the water inlet channel 12.

[0074] It is understandable that the water inlet connector 16 forms a water inlet channel 12, and the water outlet connector 18 forms a water outlet channel 14.

[0075] like Figure 7 and Figure 8 As shown, according to one embodiment of the present invention, a water pump is also provided, comprising: a housing; a rotating member 2, at least partially disposed within the housing; and a pump cover 1 as described in any of the preceding claims, the pump cover 1 covering the housing.

[0076] The water pump provided by this utility model has all the beneficial effects of the pump cover 1 because it includes the pump cover 1 proposed in any of the above embodiments.

[0077] It is understandable that the rotating part 2 is located within the space enclosed by the housing and the pump cover 1.

[0078] Optionally, a portion of the rotating part 2 is located within the cavity 100 of the pump cover 1.

[0079] Optionally, the rotating component 2 includes an impeller, which rotates to allow water to enter the cavity 100 through the inlet channel 12 and then flow from the outlet 106 to the outlet channel 14.

[0080] In some embodiments, optionally, along the rotation direction of the rotating member 2, within the second wall 104, the first end 1082 is located upstream of the second end 1084.

[0081] In this embodiment, along the rotation direction of the rotating member 2, the first end 1082 is located upstream of the second end 1084 within the second wall surface 104, causing the radial distance between at least a portion of the guide wall 108 and the axis to gradually increase along the rotation direction of the rotating member 2. This causes the water flow in the cavity 100 to flow from the first end 1082 to the second end 1084 within the space corresponding to the second wall surface 104, thus guiding the flow of water through the guide wall 108. At the same time, it also causes the water flow to flow from the second end 1084 to the first end 1082 within the space corresponding to the first wall surface 102. Consequently, the water flow is blocked at the first end 1082, causing more water to flow towards the outlet 106, increasing the water output, and also causing the first end 1082 to block backflow.

[0082] According to one embodiment of the present invention, a water heater is also provided, comprising: a pump cover 1 as described in any of the preceding claims; or a water pump as described in any of the preceding claims.

[0083] The water heater provided by this utility model has all the beneficial effects of the pump cover 1 or the water pump as proposed in any of the above embodiments.

[0084] Optionally, the water heater includes a gas water heater.

[0085] According to some embodiments of this application, the water pump is a booster pump for gas water heaters with zero cold water, and the water pump includes a pump cover 1. A spiral guide wall 108 is added inside the cavity 100 of the pump cover 1, thereby forming a minimum inner diameter isolation layer at the junction of the outlet 106 and the cavity 100 through the first end 1082 of the guide wall 108. That is, the first end 1082 is located at the junction of the outlet 106 and the cavity 100, and the radial distance between the first end 1082 and the axis is the position with the minimum radial distance between the guide wall 108 and the axis, thus blocking backflow and reducing vibration and noise caused by pressure pulsation while increasing flow rate.

[0086] Optionally, the pump cover 1 proposed in this application also reduces the cross-sectional area of ​​the flared outlet 106, thereby increasing the head of the water flow. Optionally, the outlet 106 is made as tangent as possible to the inner wall of the cavity 100 of the pump cover 1 to obtain better water discharge efficiency.

[0087] In this utility model, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0088] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0089] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pump cover, characterized in that, The pump cover is used for a water pump, the water pump including a housing and a rotating component, at least a portion of the rotating component being disposed within the housing, and the pump cover covering the housing, the pump cover comprising: The cover body includes a cavity, and the side wall of the cavity is provided with a water outlet; A water inlet channel is provided in the cover body and communicates with the cavity; A water outlet channel is provided on the cover body and connected to the cavity through the water outlet; Wherein, along the circumference of the rotating member, the sidewall of the cavity includes a first wall surface and a second wall surface, the second wall surface is provided with a guide wall, the guide wall protrudes radially from the first wall surface along the rotating member, the guide wall includes a first end and a second end opposite to each other along the circumference, at least a portion of the water outlet is located on the first wall surface, such that at least a portion of the water outlet is located between the first end and the second end.

2. The pump cover according to claim 1, characterized in that, From the first end to the second end, the radial distance between at least a portion of the guide wall and the axis of the rotating member gradually increases; Wherein, a portion of the water outlet is located on the first wall surface, and the other portion of the water outlet is located at the first end of the guide wall.

3. The pump cover according to claim 2, characterized in that, At least a portion of the guide wall is arranged in a spiral shape relative to the axis of the rotating member.

4. The pump cover according to claim 3, characterized in that, The flow guide wall includes: The first guide wall is spirally arranged relative to the axis, and the second end is disposed on the first guide wall; The second guide wall is connected to the other end of the first guide wall along the circumferential direction, and the first end is disposed on the second guide wall; Wherein, the radial distance between the second end and the axis is greater than the radial distance between the other end of the first guide wall and the axis; The second guide wall is inclined from the first end to the end connected to the first guide wall in a direction close to the axis, and the other part of the outlet is located on the second guide wall.

5. The pump cover according to claim 2, characterized in that, The second end is spaced apart from the outlet or the second end surrounds another part of the outlet.

6. The pump cover according to any one of claims 1 to 5, characterized in that, The inner wall of the water outlet channel is tangent to the first wall surface at the water outlet.

7. The pump cover according to any one of claims 1 to 5, characterized in that, The second wall surface is provided with a flow guide protrusion, which is arranged around the axis of the rotating component, and the flow guide wall is provided on the side of the flow guide protrusion facing the axis.

8. The pump cover according to any one of claims 1 to 5, characterized in that, The diameter of the end of the water outlet channel connected to the water outlet is greater than or equal to 0.5 mm and less than or equal to 5 mm; and / or The diameter of the water outlet channel gradually increases from the end connected to the water outlet to the end away from the water outlet.

9. The pump cover according to any one of claims 1 to 5, characterized in that, Also includes: A water outlet connector is connected to the cover body, and the water outlet connector includes the water outlet channel; A water inlet connector is connected to the cover body, and the water inlet connector includes the water inlet channel; The water inlet connector has at least two grooves on its inner or outer sidewall, and each of the at least two grooves has a sealing ring.

10. A water pump, characterized in that, include: case; A rotating component is at least partially disposed within the housing; and The pump cover as described in any one of claims 1 to 9, wherein the pump cover is disposed on the housing.

11. The water pump according to claim 10, characterized in that, Along the rotation direction of the rotating member, within the second wall surface, the first end is located upstream of the second end.

12. A water heater, characterized in that, include: Pump cover as described in any one of claims 1 to 9; or The water pump as described in claim 10 or 11.

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