A pump

Abstract

The application discloses a pump, which comprises a shell, a heating film, a stator, a rotor and an impeller installed at one end of the rotor, the shell is provided with a shunt part, the inner wall of the shunt part comprises an inner wall one extending to a flow channel and an inner wall two extending away from the extending direction of the inner wall one, the inner wall one and the inner wall two have a preset included angle, and a split line is formed at the joint and located outside the impeller; the first blade is provided with a first outer edge part and a blade inner wall located at one side of the liquid flow port, and the blade inner wall is designed as an inclined surface. Two inner walls one and two with a preset included angle are designed outside the impeller, so that the fluid can be shunted at the split line at the joint of the inner wall one and the inner wall two, thereby generating a flow channel circulating in the pump and a flow channel discharging to the outside of the pump. The double-flow-channel design further improves the circulation times of the liquid in the pump, ensures that the liquid can be effectively heated in the pump, and improves the high-flow output of the pump.

Description

Technical Field

[0001] This invention relates to the technical field of pumps, specifically to a type of pump. Background Technology

[0002] A heat pump relies on the centrifugal force generated by the rotation of the impeller to transport liquid. Simultaneously, a heating device is installed inside the pump body, heating the liquid during circulation. Before starting, the pump body and suction pipe are filled with water. After the motor is started, the internal shaft drives the impeller and water to rotate at high speed. The water undergoes centrifugal motion and is thrown towards the outer edge of the impeller. The impeller is the core component of the heat pump; it rotates at high speed and delivers high output, making it a crucial part of the pump.

[0003] In the existing technology, the liquid circulation in the pump body adopts the impeller outlet guide design. The impeller outlet design meets the requirement that the liquid is discharged after circulating once in the pump. In other words, most of the liquid is discharged after being heated by the heating device in the pump body for one cycle.

[0004] The obvious drawback of the above-mentioned existing technology is that the liquid circulates less frequently inside the pump body, and the heat exchange efficiency cannot be improved by heating through multiple cycles. Summary of the Invention

[0005] The object of the present invention is to provide, specifically, a pump, to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pump, comprising a housing, a heating film, a stator, a rotor, and an impeller mounted at one end of the rotor. A flow channel one is formed inside the housing between the heating film and the stator, allowing liquid to flow through. A flow channel two is formed inside the rotor, allowing liquid to flow in from the flow channel one and out from the impeller. The impeller has a first blade located near the rotor and a second blade coaxially arranged and located away from the first blade. A liquid outlet for liquid to flow out from the flow channel two is formed between the first and second blades. The housing has a flow divider. The inner wall of the flow divider includes an inner wall 1 extending toward a flow channel and an inner wall 2 extending away from the direction of the inner wall 1. The inner wall 1 and the inner wall 2 have a preset included angle and a dividing line located outside the impeller is formed at their junction. The first blade has a first outer edge and an inner wall located on the side of the liquid flow port. The inner wall of the blade is set as an inclined surface, and the extension line of the inclined surface points to the area where the dividing line is located. The shortest radial distance between the first outer edge and the dividing line is D2, and the shortest axial distance between the first outer edge and the dividing line is D1. Wherein, both D1 and D2 are greater than zero.

[0007] The first blade and the second blade have the same maximum diameter, and the second blade has a second outer edge portion, the distance between the second outer edge portion and the inner wall is greater than zero.

[0008] The inner wall one is set perpendicular to the inner wall two.

[0009] The stator wall has a through hole at the end away from the impeller. One end of the through hole is connected to flow channel one, and the other end is connected to flow channel two.

[0010] The junction between inner wall one and inner wall two is a right-angle transition.

[0011] As can be seen from the above technical solution, the present invention employs two inner walls, one and two, with a preset angle, designed on the outside of the impeller, so that they are located outside the liquid flow port of the impeller. During the liquid discharge process, the impeller can split the fluid at the dividing line where the inner wall one and the inner wall two meet, thereby creating a flow channel circulating in the pump and a flow channel discharged out of the pump. The dual flow channel setting further increases the number of times the liquid circulates in the pump, ensuring that the liquid can be effectively heated in the pump while also improving the pump's high flow output. Attached Figure Description

[0012] Figure 1 A partial structural schematic diagram of the present invention is shown;

[0013] Figure 2 A side sectional view of the structure of the present invention is shown.

[0014] In the diagram: 001-Flow channel one, 002-Flow channel two, 100-Outer shell, 110-Branch section, 111-Inner wall one, 112-Inner wall two, 113-Dividing line, 200-Impeller, 210-Liquid flow port, 220-First blade, 221-First outer edge, 222-Blade inner wall, 230-Second blade, 231-Second outer edge, 300-Heating film, 400-Stator, 410-Through hole, 411-Opening one, 412-Opening two, 500-Rotor. Detailed Implementation

[0015] In this case, a pump is used that can both circulate liquid within the pump and divert liquid flow. This is mainly due to the design of its outer casing 100 and its position relative to the impeller 200, as detailed below:

[0016] The pump structure includes a housing 100, a heating film 300, a stator 400, a rotor 500, and an impeller 200 mounted at one end of the rotor 500. A flow channel 001 is formed inside the housing 100 between the heating film 300 and the stator 400, which allows liquid to flow through. A flow channel 2002 is formed inside the rotor 500, which allows liquid to flow in from the flow channel 001 and out from the impeller 200. The impeller 200 has a first blade 220 located near the rotor 500 and a second blade 230 coaxially arranged and located away from the first blade 220. A liquid outlet is formed between the first blade 220 and the second blade 230, which allows liquid to flow out from the flow channel 2002.

[0017] Here, those skilled in the art can understand that the liquid enters the pump structure in the form of cold water from the central shaft of the impeller 200, enters the flow channel 001 through the liquid flow port 210 located between the first blade 220 and the second blade 230 of the impeller 200, and then flows from the flow channel 001 to the flow channel 2002 located where the rotor 500 is located. During this process, the liquid can be heated by the heating film 300, and the heated liquid is thus circulated and discharged from the port of the outer casing 100. The key design feature of this project is that both the cold water just entering the pump and the circulating heated water after being heated by the heating film can be mixed through the flow divider on the outer casing. Specifically, when the cold water is released through the liquid outlet 210, a portion flows outwards, while the other portion flows into flow channel 001. Similarly, when the heated water after being heated by the heating film is released through the liquid outlet 210, a portion flows outwards, while the other portion flows into flow channel 001 and circulates. This creates a dual-channel mixing flow of cold and hot water, effectively improving heating efficiency, as detailed below:

[0018] The outer casing 100 has a flow-diverting section 110. The inner wall of the flow-diverting section 110 includes an inner wall 111 extending towards the flow channel 1001 and an inner wall 112 extending away from the inner wall 111. The inner wall 111 and the inner wall 112 have a predetermined included angle and a dividing line 113 is formed at the junction, located outside the impeller 200. It is this dividing line 113 that diverts the liquid. Correspondingly, the first blade 220 has a first outer edge 221 and an inner wall 222 located on one side of the liquid flow port 210. The inner wall 222 is set as an inclined surface, and the extension line of the inclined surface points to the area where the dividing line 113 is located. Since the liquid needs to be guided by the inclined surface within the liquid flow port 210, the inclined surface can guide the liquid in a preset direction when it is discharged from the liquid flow port 210, that is, direct the liquid to flow towards the dividing line 113. In this way, the liquid can be divided by the dividing line 113, and both cold water and heated hot water can be separated and mixed here. This cross-mixing effect can achieve a high temperature and high pressure drainage effect.

[0019] It is important to note that the shortest radial distance between the first outer edge 221 and the dividing line 113 is D2, and the shortest axial distance between the first outer edge 221 and the dividing line 113 is D1. Both D1 and D2 are greater than zero. This ensures that the impeller 200 has a certain distance from the dividing line 113 to form a channel for liquid flow.

[0020] Please see Figure 1 After the liquid is split, a portion of the liquid will be discharged outward along direction S1, while the other portion of the liquid will flow into channel 001 along direction S2, thereby achieving reciprocating cycle heating.

[0021] Furthermore, in order to improve the diversion effect, inner wall 111 is set perpendicular to inner wall 212, and the junction of inner wall 111 and inner wall 212 is a right-angle transition.

[0022] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A pump comprising a housing (100), a heating film (300), a stator (400), a rotor (500), and an impeller (200) mounted at one end of the rotor (500), wherein a flow channel (001) is formed inside the housing (100) between the heating film (300) and the stator (400) for liquid flow, and a flow channel (002) is formed inside the rotor (500) for liquid to flow into from the flow channel (001) and out from the impeller (200), wherein the impeller (200) has a first blade (220) located near the rotor (500) and a second blade (230) coaxially disposed away from the first blade (220), and a liquid outlet (210) for liquid to flow out from the flow channel (002) is formed between the first blade (220) and the second blade (230), characterized in that: The outer casing (100) has a flow divider (110), the inner wall of which includes an inner wall one (111) extending toward the flow channel one (001) and an inner wall two (112) extending away from the inner wall one (111). The inner wall one (111) and the inner wall two (112) have a preset included angle and a dividing line (113) located outside the impeller (200) is formed at the junction. The first blade (220) has a first outer edge (221) and an inner wall (222) located on one side of the liquid flow port (210). The inner wall (222) is configured as an inclined surface, and the extension line of the inclined surface points to the location of the dividing line (113). The shortest radial distance between the first outer edge (221) and the dividing line (113) is D2, and the shortest axial distance between the first outer edge (221) and the dividing line (113) is D1. Both D1 and D2 are greater than zero.

2. The pump according to claim 1, characterized in that: The first blade (220) and the second blade (230) have the same maximum diameter, and the second blade (230) has a second outer edge (231) with a distance greater than zero between the second outer edge (231) and the inner wall (111).

3. A pump according to claim 1, characterized in that: The inner wall one (111) is set perpendicular to the inner wall two (112).

4. A pump according to claim 1, characterized in that: The stator (400) has a through hole (410) at the end away from the impeller (200). One end of the through hole (410) is connected to flow channel one (001), and the other end is connected to flow channel two (002).

5. A pump according to claim 3, characterized in that: The junction of inner wall one (111) and inner wall two (112) is a right-angle transition.

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