A silent water-cooled pump

Abstract

The present invention provides a silent water-cooled pump. The silent water-cooled pump includes a pump housing and a pump. An inlet, an outlet and a temperature-controlled drain valve are provided on the pump housing. The pump includes an outer end cover, an inner end cover, a stator core, a rotor, two bearing seats and sliding bearings within the two bearing seats. The outer end cover is used to enclose the pump housing and is connected to the inner end cover through a hollow connecting pipe, so that a sealed shielding cavity is formed within the hollow connecting pipe. An air inlet hole, an air outlet hole and a wire passing hole are provided on the outer end cover. Check valves are provided within the air inlet hole and the air outlet hole. A ventilation pipe is further connected outside the air inlet hole, and the other end of the ventilation pipe is connected to a blower. The stator core is arranged within the shielding cavity. The two bearing seats are respectively fixed at the centers of the opposite sides of the inner end cover and the outer end cover. The rotor is located within the stator core, and both ends of the rotor are respectively fixed on the sliding bearings within the two bearing seats. At the same time, one end of the rotor extends through the inner end cover and is connected to a pump body provided on the inner end cover.

Description

Technical Field

[0001] The present invention relates to a water pump. Background Art

[0002] At present, the water pressure of tap water in many families is insufficient, and a water pump is often required for secondary water supply. Ordinary water pump motors use ball bearings instead of sliding bearings because sliding bearings require water lubrication, while ordinary water pump motors cannot admit water. However, ball bearings generate a lot of noise during operation. Therefore, a canned motor pump with a sliding bearing is often used for household water supply, which has a good sound insulation effect.

[0003] However, in the existing canned motor pump, the stator assembly shielding cavity is waterproofed by potting. In this way, when the motor stator assembly heats up, the glue is easily expanded and the cavity wall of the shielding cavity is squeezed and broken. Moreover, the water outlet of the existing canned motor pump is arranged on one side of the upper end of the pump housing. During operation, water enters from the bottom of the pump housing, passes through the water passing cavity between the pump housing and the motor, and then is output from one side of the upper end of the pump housing. The water flow on both sides of the water passing cavity between the motor and the pump housing is uneven, and the water flow in the water passing cavity far from the water outlet is slow, resulting in poor cooling effect and easy failure of the motor. In addition, the existing canned motor pump is not provided with a drain valve. If the faucet leaks, the motor will work, but the water flow through the water passing cavity between the motor and the pump housing is very small, and the motor cannot be cooled well, often easily causing the motor to burn out. Summary of the Invention

[0004] In view of the defects of the existing water pumps, the technical problem to be solved by the present invention is to provide a silent water-cooled pump with better heat dissipation, cooling effect and longer service life.

[0005] To achieve the above object, according to one aspect of the present invention, the present invention is implemented by the following technical measures: A silent water-cooled pump, comprising:

[0006] A pump housing, one end of the pump housing is open and the inside is hollow. An outlet is provided on the outer wall of the pump housing near the opening, and an inlet is also provided at the non-opening end of the pump housing;

[0007] A pump, the pump includes a motor and a pump body,

[0008] The motor consists of a stator assembly and a rotor assembly. The stator assembly includes an outer end cover, an inner end cover, and a stator core. The outer end cover is connected to the inner end cover through a hollow connecting pipe, forming a sealed shielding cavity inside the hollow connecting pipe. The side of the outer end cover with the hollow connecting pipe is used to seal the open end of the pump housing. The stator core is arranged inside the shielding cavity. The outer end cover is provided with an air inlet hole, an air outlet hole, and a wire passing hole. One-way valves are arranged in the air inlet hole and the air outlet hole. A ventilation pipe is also connected outside the air inlet hole, and the other end of the ventilation pipe is connected to a blower. The wire passing hole is for the wires on the stator core to pass through. The rotor assembly includes a rotor, two bearing seats, and sliding bearings inside the two bearing seats. The two bearing seats are respectively fixed at the centers of the opposite sides of the inner end cover and the outer end cover. The rotor is located inside the stator core, and both ends of the rotor are respectively fixed on the sliding bearings inside the two bearing seats. At the same time, one end of the rotor extends through the inner end cover and is connected to a pump body arranged on the inner end cover.

[0009] In this silent water-cooled pump, an air inlet hole and a ventilation hole are provided on the outer end cover of the motor stator assembly. At the same time, there is no potting filling in the shielding cavity. When the operating temperature of the motor rises, the air in the shielding cavity expands and is discharged through the one-way valve of the air outlet hole. When the motor cools down, air can be inhaled through the one-way valve of the air inlet hole, preventing the pressure in the shielding cavity from being too high or too low and damaging the shielding cavity. And when the temperature in the shielding cavity is too high, the blower will be started to inflate the shielding cavity, so that the hot air in the shielding cavity is discharged from the air outlet hole, preventing the motor from being damaged due to high temperature.

[0010] Further, a central hole is provided at the center of the outer end cover, and a breathing cover is provided at the outer orifice of the central hole. The breathing cover is a soft rubber cover. The above design can be adjusted when the water in the rotor accommodation cavity inside the stator assembly expands or contracts due to temperature changes.

[0011] Further, a spiral water channel is provided between the stator assembly and the inner wall of the pump housing through a baffle. The above design makes the shielding cavity cool evenly, preventing the stator assembly from being damaged due to uneven heating and cooling.

[0012] Further, a temperature-controlled drain valve is also provided on the outer wall of the pump housing opposite to the water outlet. The above design is that when the faucet leaks and the water flow through the spiral water channel is too slow during the operation of the motor, the temperature-controlled drain valve will be activated to drain water, accelerating the water flow in the spiral water channel and cooling the motor.

[0013] Compared with the prior art, the advantages of the present invention are: providing a silent water-cooled pump with greatly improved service life and motor heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0015] Figure 1 Schematic diagram of a half-section structure of a silent water-cooled pump according to the present invention.

[0016] Figure 2 is Figure 1 right view of the outer and inner end covers.

[0017] Explanation of reference numerals: 1, pump housing; 2, water outlet; 3, water inlet; 4, pump body; 5, outer end cover; 6, inner end cover; 7, stator core; 8, hollow connecting pipe; 9, shielding cavity; 10, air intake hole; 11, air outlet hole; 12, wire passing hole; 13, rotor; 14, bearing seat; 15, sliding bearing; 16, breathing cover; 17, baffle; 18, spiral water channel; 19, temperature-controlled drain valve. Detailed implementation manners

[0018] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.

[0019] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "bottom", "top", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0020] Embodiment 1

[0021] Please refer to Figure 1 and Figure 2, a silent water-cooled pump provided in this embodiment includes a pump housing 1, a pump, an outer end cover 5, an inner end cover 6, a breathing cover 16, a spiral water channel 18, and a temperature-controlled drain valve 19. The above-mentioned pump housing 1 is a hollow cylinder with a closed left end and an open right end. There is a water inlet 3 at the center of the closed left end. There is a water outlet 2 on the upper side of the pump housing 1 near the open right end. A temperature-controlled drain valve 19 is provided on the pump housing 1 on the side opposite to the water outlet 2. The above-mentioned pump includes a motor and a pump body 4. The motor includes a stator assembly and a rotor assembly. The stator assembly includes an outer end cover 5, a hollow connecting pipe 8, an inner end cover 6, and a stator core 7. The above-mentioned hollow connecting pipe 8 is located inside the pump housing 1, and its left end and right end are respectively connected to the inner end cover 6 and the outer end cover 5 to form a shielding cavity 9. The above-mentioned stator core 7 is located inside the shielding cavity 9. The above-mentioned inner end cover 6 and outer end cover 5 are both annular end covers. At the same time, there are an air inlet hole 10, an air outlet hole 11, and a wire passing hole 12 on the outer end cover 5. One-way valves are fixed in both the air inlet hole 10 and the air outlet hole 11, and a ventilation pipe is also connected outside the air inlet hole 10. The other end of the ventilation pipe is connected to a blower. The above-mentioned wire passing hole 12 is for the wires on the stator core 7 to pass through. The above-mentioned rotor assembly includes a rotor 13, two bearing seats 14, and sliding bearings 15 inside the two bearing seats 14. The two bearing seats 14 are respectively fixed at the centers of the opposite sides of the inner end cover 6 and the outer end cover 5. The rotor 13 is located inside the stator core 7, and both ends of the rotor 13 are respectively fixed on the sliding bearings 15 inside the two bearing seats 14. At the same time, the left end of the rotor 13 extends past the inner end cover 6 and is connected to the pump body 4 provided on the inner end cover 6.

[0022] The silent water-cooled pump provided in this embodiment has an air inlet hole 10 and an air outlet hole 11 on the outer end cover 5 of the motor stator assembly, and no potting is filled in the shielding cavity 9. When the working temperature of the motor rises, the air in the shielding cavity 9 expands and will be discharged through the one-way valve of the air outlet hole 11. When the motor cools down, air can be inhaled through the one-way valve of the air inlet hole 10, preventing the pressure in the shielding cavity 9 from being too high or too low and damaging the shielding cavity 9. And when the temperature in the shielding cavity 9 is too high, the blower will be started to inflate the shielding cavity 9, so that the hot air in the shielding cavity 9 is discharged from the air outlet hole 11, preventing the motor from being damaged due to high temperature. The design of the temperature-controlled drain valve 19 is that when the faucet leaks and the water flow through the water channel is too slow when the motor is working, the temperature-controlled drain valve 19 will start to drain water, accelerating the water flow in the water channel and cooling the motor. After the motor cools down, the temperature-controlled drain valve 19 will close the drain, thus preventing the motor from being burned due to too high temperature when the faucet leaks.

[0023] Embodiment 2

[0024] On the basis of Embodiment 1, Embodiment 2 further has a central hole opened at the center of the outer end cover 5. A breathing cover 16 is fixed at the outer hole opening of the central hole. The breathing cover is a soft rubber cover. A spiral water channel 18 is formed between the stator assembly and the inner wall of the pump housing 1 through a baffle 17.

[0025] In the design of the above-mentioned spiral water channel 18, when the water pump works, water needs to pass through the spiral water channel 18 around the outer side of the shielding cavity 9 of the stator assembly during the process of entering from the water inlet 3 of the pump housing 1 and being output from the water outlet 2, so as to cool the shielding cavity evenly and prevent the stator assembly from being damaged due to uneven heat and cold. The design of the above-mentioned breathing cover 16 is adjustable when the water in the stator assembly expands or contracts due to temperature changes.

[0026] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A silent water-cooled pump, characterized in that, Comprising: A pump housing, one end of the pump housing is open and the interior is hollow. A water outlet is provided on the outer wall of the pump housing near the opening, and a water inlet is also provided at the non-opening end of the pump housing. A pump, the pump includes a motor and a pump body. The motor is composed of a stator assembly and a rotor assembly. The stator assembly includes an outer end cover, an inner end cover, and a stator core. The outer end cover is connected to the inner end cover through a hollow connecting pipe, so that a sealed shielding cavity is formed inside the hollow connecting pipe. And the hollow connecting pipe side of the outer end cover is used to seal the opening end of the pump housing. The stator core is arranged in the shielding cavity. An air inlet hole, an air outlet hole, and a wire passing hole are provided on the outer end cover. Check valves are provided in the air inlet hole and the air outlet hole. A ventilation pipe is also connected outside the air inlet hole, and the other end of the ventilation pipe is connected to a blower. The wire passing hole is for the wires on the stator core to pass through. The rotor assembly includes a rotor, two bearing seats, and sliding bearings in the two bearing seats. The two bearing seats are respectively fixed at the centers of the opposite sides of the inner end cover and the outer end cover. The rotor is located inside the stator core, and both ends of the rotor are respectively fixed on the sliding bearings in the two bearing seats. At the same time, one end of the rotor extends through the inner end cover and is connected to the pump body provided on the inner end cover.

2. The silent water-cooled pump according to claim 1, wherein, A central hole is provided at the center of the outer end cover, and a breathing cover is provided at the outer orifice of the central hole. The breathing cover is a soft rubber cover.

3. A silent water-cooled pump according to claim 1, characterized in that, A spiral water channel is provided between the stator assembly and the inner wall of the pump housing through a baffle.

4. The silent water-cooled pump according to claim 1 or 3, characterized in that, A temperature-controlled drain valve is also provided on the outer wall of the pump housing opposite to the water outlet.

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