Magnetic transmission ice maker water pump

Abstract

A magnetically-driven ice maker water pump comprises a supporting frame, a pump body unit and a driving unit. The pump body unit comprises a water pump base, a water pump shell, an impeller assembly and an impeller rotating shaft. The water pump base comprises a base body and a mounting sleeve. The water pump shell comprises a shell body, a water outlet and a water inlet. The impeller assembly comprises inner magnetic steel and a water pump impeller. The driving unit comprises a driving device, a transmission shaft and outer magnetic steel. The outer magnetic steel is of a cylindrical structure. When the driving unit and the pump body unit are installed on the supporting frame, the inner magnetic steel is contained in the installation sleeve, and the outer magnetic steel is arranged on the outer side of the installation sleeve in a sleeving mode. According to the magnetically-driven ice maker water pump, magnetic transmission of the impeller assembly and the outer magnetic steel is achieved, loss of a pump body rotating piece and a shaft caused by instantaneous load when the water pump is started is avoided, the service life is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of water pumps, in particular to a magnetically driven ice-making machine water pump. Background Art

[0002] An ice maker is a refrigeration mechanical device that generates ice by absorbing heat from the refrigerant in the refrigeration system by evaporating water through an evaporator. It uses a refrigeration system and water as a carrier to make ice by passing it through a certain device under power-on. The shape of the ice cubes generated varies depending on the style and production method of the evaporator; people generally classify ice makers into granular ice machines, flake ice machines, plate ice machines, tube ice machines, shell ice machines, etc. based on the shape of the ice. The water pump in the ice maker is a machine that transports liquids. The water pump transfers the mechanical energy of the prime mover or other external energy to the liquid, increasing the energy of the liquid so that the water can be transferred to the ice-making mechanism to make ice.

[0003] In the water pump of a traditional ice maker, the motor and the pump body are directly connected through a transmission shaft, so that the torque output by the motor is directly transmitted to the rotor of the water pump. However, the heavy load on the pump body at the moment of starting will increase the load on the motor, increase energy consumption and motor power, and also increase the failure rate, shortening the service life of the water pump and even causing fatigue, deformation or even breakage of the impeller shaft, resulting in wear and damage to the transmission components and increasing maintenance costs. Summary of the invention

[0004] In view of this, the present invention provides an ice-making machine water pump with magnetic transmission which can increase the service life of the water pump to meet industrial needs.

[0005] A magnetically driven ice-making machine water pump comprises a support frame, a pump body unit arranged on the support frame, and a driving unit arranged on the support frame. The pump body unit comprises a water pump base arranged on the support frame, a water pump housing arranged on the water pump base, an impeller assembly arranged between the water pump base and the water pump housing, and an impeller shaft arranged between the impeller assembly and the water pump housing. The water pump base comprises a base body arranged on the support frame, and a mounting sleeve arranged on the bottom cover body. The water pump housing comprises a housing body, a water outlet arranged on the housing body, and a water inlet arranged on the housing body. The impeller assembly comprises an inner magnetic steel accommodated in the mounting sleeve, and a water pump impeller arranged on the inner magnetic steel. The driving unit comprises a driving device arranged on the support frame, a transmission shaft arranged on the driving device, and an outer magnetic steel arranged on the transmission shaft. The outer magnetic steel is a cylindrical structure. When the driving unit and the pump unit are installed on the support frame, the inner magnetic steel is accommodated in the installation sleeve, and the outer magnetic steel is sleeved on the outside of the installation sleeve.

[0006] Furthermore, the driving unit also includes an auxiliary impeller arranged at an end of the transmission shaft facing away from the external magnetic steel.

[0007] Furthermore, the water pump casing also includes at least one sealing groove arranged at one end of the casing body facing the water pump base, at least one sealing ring accommodated in the sealing groove, and a shaft mounting frame arranged on the inner wall of the casing body, the shaft mounting frame is fixedly arranged in the water inlet, the central axis of the shaft mounting frame coincides with the central axis of the impeller shaft, and one end of the impeller shaft is inserted into the shaft mounting frame.

[0008] Furthermore, the mounting sleeve includes a mounting sleeve body and a limiting flange arranged on the mounting sleeve body.

[0009] Furthermore, the limiting flange is higher than the end surface of the base body, and the inner diameter of the shell body is larger than the outer diameter of the limiting flange.

[0010] Furthermore, the central axis of the water outlet and the central axis of the water inlet are perpendicular to each other.

[0011] Furthermore, the magnetic transmission ice maker water pump also includes a second support frame arranged on the support frame and used to support the drive unit, and the transmission shaft passes through the second support frame and is connected to the external magnetic steel.

[0012] Furthermore, the driving device includes a rotor arranged on the transmission shaft, an iron core fixedly connected to the support frame and arranged around the outer side of the rotor, and a winding arranged on the iron core.

[0013] Furthermore, the central axes of the impeller shaft, the inner magnetic steel, the outer magnetic steel, and the transmission shaft coincide with each other.

[0014] Furthermore, the inner diameter of the outer magnetic steel is larger than the outer diameter of the mounting sleeve, and the diameter of the inner magnetic steel is smaller than the inner diameter of the mounting sleeve.

[0015] Compared with the prior art, the magnetic transmission ice machine water pump provided by the present invention is driven by the pump body unit through the driving unit. The pump body unit is provided with a water pump base on the support frame, a water pump housing is provided on the water pump base, an impeller assembly is provided between the water pump base and the water pump housing, and an impeller shaft is provided between the impeller assembly and the water pump housing to realize the rotation of the impeller assembly, and a mounting sleeve is provided on the bottom cover body in the water pump base. The driving device of the driving unit is connected to the external magnetic steel for rotation through a transmission shaft. The external magnetic steel is sleeved on the outside of the mounting sleeve. When the driving device drives the external magnetic steel to rotate, the magnetic force of the external magnetic steel is transmitted to the internal magnetic steel through the mounting sleeve, and the internal magnetic steel and the external magnetic steel are attracted to each other, and the internal magnetic steel rotates synchronously with the external magnetic steel, and the internal magnetic steel and the water pump impeller are an integral whole, so the rotation of the internal magnetic steel directly drives the water pump impeller to rotate, thereby realizing the transmission of liquid. It can be seen from this that the magnetic transmission ice maker water pump realizes magnetic transmission between the impeller assembly and the external magnetic steel, avoiding the loss of the pump body rotating parts and the shaft caused by the instantaneous load when the water pump is started, thereby increasing the service life and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the magnetically driven ice-making machine water pump provided by the present invention.

[0017] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of a magnetically driven ice maker water pump. DETAILED DESCRIPTION

[0018] The specific embodiments of the present invention are further described in detail below. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0019] like Figure 1 to Figure 2 As shown, it is a schematic diagram of the structure of the magnetic transmission ice maker water pump provided by the present invention. The magnetic transmission ice maker water pump comprises a support frame 1, a pump body unit 10 arranged on the support frame 1, a drive unit 20 arranged on the support frame 1, and a second support frame 30 arranged on the support frame 1 and used to support the drive unit 20. The magnetic transmission ice maker water pump also includes some other functional modules, such as assembly components, electrical connection components, etc., which should be well known to those skilled in the art and will not be described in detail one by one here.

[0020] The support frame 1 is used to support the pump body unit 10 and the driving unit 20. The support frame 1 is a prior art and will not be described in detail herein.

[0021] The pump body unit 10 includes a water pump base 11 arranged on the support frame 1, a water pump housing 12 arranged on the water pump base 11, an impeller assembly 13 arranged between the water pump base 11 and the water pump housing 12, and an impeller shaft 14 arranged between the impeller assembly 13 and the water pump housing 12.

[0022] The water pump base 11 includes a base body 111 disposed on the support frame 1 and a mounting sleeve 112 disposed on the bottom cover body 111. The base body 111 and the mounting sleeve 112 are integrally formed to ensure a stable structure between the base body 111 and the mounting sleeve 112.

[0023] The mounting sleeve 112 includes a mounting sleeve body 1121 and a limiting flange 1122 disposed on the mounting sleeve body 1121. The mounting sleeve body 1121 is a non-magnetic component, and the mounting sleeve body 1121 is used to isolate the inner magnetic steel 131 and the outer magnetic steel 23 to prevent the inner magnetic steel 131 from directly contacting the outer magnetic steel 23. The mounting sleeve body 1121 is a prior art. In addition, the limiting flange 1122 is higher than the end surface of the base body 111, so that the connection position between the mounting sleeve 112 and the base body 111 is stepped, so that the water pump housing 12 can be installed on the water pump base 11.

[0024] The water pump housing 12 includes a housing body 121, a water outlet 122 arranged on the housing body 121, and a water inlet 123 arranged on the housing body 121, at least one sealing groove 124 arranged at one end of the housing body 121 facing the water pump base 11, and at least one sealing ring 125 accommodated in the sealing groove 124, and a rotating shaft mounting bracket 126 arranged on the inner side wall of the housing body 121.

[0025] The inner diameter of the housing body 121 is greater than the outer diameter of the limiting flange 1122 , so that the water pump housing 12 is easily installed on the water pump base 11 .

[0026] The central axis of the water outlet 122 and the central axis of the water inlet 123 are perpendicular to each other, that is, the water outlet 122 and the water inlet 123 are arranged vertically. The vertical arrangement can optimize the fluid flow path, reduce the vortex and backflow of the fluid inside the pump, thereby reducing energy loss, and the vertical arrangement helps the fluid to enter and leave the pump more smoothly, reducing pressure loss.

[0027] The sealing groove 124 is placed inside the sealing ring 125 to limit the position of the sealing ring 125. When the water pump housing 12 is installed on the water pump base 11, the sealing between the water pump housing 12 and the water pump base 11 is increased. The sealing groove 124 and the sealing ring 125 are both existing technologies and will not be described in detail here.

[0028] The shaft mounting bracket 126 is used to mount one end of the impeller shaft 14 to limit the position of one end of the impeller shaft 14 and realize the rotation of the impeller shaft 14. The central axis of the shaft mounting bracket 126 coincides with the central axis of the impeller shaft 14. In the present embodiment, the shaft mounting bracket 126 is fixedly disposed in the water inlet 123, one end of the impeller shaft 14 is inserted on the shaft mounting bracket 126, and the other end of the impeller shaft 14 is inserted on the internal magnetic steel 131 described below, thereby limiting the position of the impeller shaft 14, and further limiting the position of the impeller assembly 13 in the water pump housing 12, so that the impeller assembly 13 and the impeller shaft 14 are stable during rotation.

[0029] The impeller assembly 13 includes an inner magnetic steel 131 accommodated in the mounting sleeve 112 and a water pump impeller 132 disposed on the inner magnetic steel 131 .

[0030] The inner magnetic steel 131 is accommodated in the mounting sleeve 112. The inner magnetic steel 131 is a prior art. The inner magnetic steel 131 cooperates with the driving unit 20 to drive the water pump impeller 132 to rotate. Therefore, the inner magnetic steel 131 will be described in detail in conjunction with the driving unit 20 and will not be repeated here.

[0031] The water pump impeller 132 is used to apply centrifugal force to the liquid flowing through so that the liquid gains speed and pressure. The water pump impeller 132 is a prior art and will not be described in detail here.

[0032] The impeller shaft 14 connects the impeller assembly 13 and the water pump housing 12 together to realize the positioning of the impeller assembly 13. The impeller shaft 14 is a prior art and will not be described in detail herein.

[0033] The driving unit 20 includes a driving device 21 arranged on the support frame 1, a transmission shaft 22 arranged on the driving device 21, an external magnetic steel 23 arranged on the transmission shaft 22, and an auxiliary impeller 24 arranged at an end of the transmission shaft 22 facing away from the external magnetic steel 23.

[0034] The driving device 21 is a device that converts electrical energy into mechanical energy. The driving device 21 drives the transmission shaft 22 to rotate. The driving device 21 is a prior art and will not be described in detail herein.

[0035] The driving device 21 includes a rotor 211 disposed on the transmission shaft 22 , an iron core 212 fixedly connected to the support frame 1 and disposed around the outer side of the rotor 211 , and a winding 213 disposed on the iron core 212 .

[0036] The rotor 211 is used to respond to the change of the stator magnetic field, generate a rotating magnetic field through the current, and then interact with the magnetic force of the rotor 211 to rotate the rotor 211. The winding 213 is a coil made of conductive material. The iron core 212 is used to embed the winding 213. The iron core 212 enhances the magnetic flux and magnetic field of the inductor coil of the winding 213. The rotor 211, the iron core 212, the winding 213, and the assembly structure between the rotor 211, the iron core 212, and the winding 213 are all existing technologies. The outer sides of the rotor 211, the iron core 212, and the winding 213 are all provided with protective structures (not shown) to avoid short circuits.

[0037] When the driving device 21 is working, after the winding 213 is energized and inserted into the iron core 212, the iron core 212 is magnetized by the magnetic field of the energized winding 213, and the generated magnetic field rotates around the rotor 211 on the iron core 212, driving the rotor 211 to rotate. Since the iron core 212 is made of a material with high magnetic permeability and good magnetic conductivity, the magnetic flux can be concentrated inside the iron core to form a strong magnetic field area, and the larger the area where the magnetic flux is concentrated, the greater the magnetic field strength, and the magnetic field generated by the iron core 212 and the magnetic field generated by the winding 213 are superimposed on each other, so that the magnetism of the winding 21 is greatly enhanced, and the stability of the rotation of the rotor 211 is improved.

[0038] The central axes of the impeller shaft 14, the inner magnetic steel 131, the outer magnetic steel 23, and the transmission shaft 22 coincide with each other, and the inner diameter of the outer magnetic steel 23 is larger than the outer diameter of the mounting sleeve 112, and the diameter of the inner magnetic steel 131 is smaller than the inner diameter of the mounting sleeve 112, so that the positions of the outer magnetic steel 23 and the inner magnetic steel 131 on the mounting sleeve 112 are stable, and the cooperation between the outer magnetic steel 23 and the inner magnetic steel 131 is facilitated. The transmission shaft 22 connects the rotor 211 and the outer magnetic steel 23 together, so that the kinetic energy of the rotor 211 is transmitted to the outer magnetic steel 23 to realize the rotation of the outer magnetic steel 23. The transmission shaft 22 is a prior art and will not be described in detail here.

[0039] When the drive unit 20 and the pump body unit 10 are installed on the support frame 1, the inner magnetic steel 131 is accommodated in the installation sleeve 112, and the outer magnetic steel 23 is sleeved on the outside of the installation sleeve 112. The magnetic force generated by the outer magnetic steel 23 can be transmitted to the inner magnetic steel 131 through the installation sleeve 112 to drive the inner magnetic steel 131 to rotate. It can be seen without a doubt that the installation sleeve 112 separates the outer magnetic steel 23 from the inner magnetic steel 131, and the outer magnetic steel 23 is magnetically connected to the inner magnetic steel 131. The installation sleeve 112 is used to isolate the pump body unit 10 and the drive unit 20 to ensure that the pump body unit 10 and the drive unit 20 are independent of each other, effectively avoiding the leakage problem that may occur in the traditional sealing method, and improving the sealing and safety of the pump body unit 10. The outer magnetic steel 23 is a prior art.

[0040] When the driving device 21 drives the outer magnetic steel 23 to rotate, the magnetic force of the outer magnetic steel 23 is transmitted to the inner magnetic steel 131 through the mounting sleeve 112, and the inner magnetic steel 131 and the outer magnetic steel 23 are attracted to each other, and the inner magnetic steel 131 and the outer magnetic steel 23 rotate synchronously, and the inner magnetic steel 13 is fixedly connected to the water pump impeller 132, so the rotation of the inner magnetic steel 13 directly drives the water pump impeller 132 to rotate, thereby realizing the transmission of liquid. It can be clearly seen that the transmission shaft 22 and the impeller shaft 14 form a magnetic transmission through the inner magnetic steel 131 and the outer magnetic steel 23. At the moment when the water pump is started, the inner magnetic steel 131 and the outer magnetic steel 23 form a magnetic transmission to achieve contactless transmission of power. In addition, the inner magnetic steel 131 and the outer magnetic steel 23 and the magnetic coupling can alleviate the impact of the load on the motor, that is, the large load of the pump unit 10 is reduced through the magnetic connection, and the motor load is reduced. At the beginning of the water pump startup, the torque of the rotor 211 rises rapidly, and as the speed of the rotor 211 increases, the torque generated gradually decreases. After the drive device 21 is started, the speed of the rotor 211 reaches the rated speed, and the torque generated also reaches the rated torque, achieving a smooth start to protect the transmission of the transmission shaft 22 and the impeller shaft 14.

[0041] The auxiliary impeller 24 is connected to the transmission shaft 22, that is, when the driving device 21 drives the external magnetic steel 23 to rotate, the auxiliary impeller 24 also rotates synchronously. The auxiliary impeller 24 is used for heat dissipation and cooling when the water pump is working. When the auxiliary impeller 24 rotates, the wind generated by the rotation of the auxiliary impeller 24 dissipates the heat of the driving device 21, preventing the temperature of the driving device 21 from being too high, thereby improving the service life and performance of the water pump.

[0042] The second support frame 30 is used to support the transmission shaft 22 . The transmission shaft 22 is passed through the second support frame 30 and connected to the external magnetic steel 23 to achieve the rotation of the transmission shaft 22 and the connection with the external magnetic steel 23 . When the driving unit 20 is installed on the second supporting frame 30, under the supporting action of the second supporting frame 30, the supporting frame 30 limits the position of the transmission shaft 22, preventing the transmission shaft 22 from shaking during the rotation process, so as to improve the stability of the transmission shaft 22 driving the external magnetic steel 23 to rotate, and the rotating shaft mounting frame 126 limits the position of the impeller assembly 13 and the impeller rotating shaft 14, so as to ensure that the impeller assembly 13 and the impeller rotating shaft 14 are stable during the rotation process. During the operation of the ice maker water pump, through the action of the rotating shaft mounting frame 126 and the second supporting frame 30, the central axes of the inner magnetic steel 131 and the outer magnetic steel 23 coincide with each other, and the inner magnetic steel 131 and the outer magnetic steel 23 rotate stably during the driving process, thereby ensuring that the driving unit 20 stably drives the pump body unit 10.

[0043] Compared with the prior art, the magnetic transmission ice maker water pump provided by the present invention drives the pump body unit 10 through the driving unit 20. The pump body unit 10 is provided with a water pump base 11 on the support frame 1, and a water pump housing 12 is provided on the water pump base 11. An impeller assembly 13 is provided between the water pump base 11 and the water pump housing 12, and an impeller shaft 14 is provided between the impeller assembly 13 and the water pump housing 12 to realize the rotation of the impeller assembly 13. A mounting sleeve 112 is provided on the bottom cover body 111 in the water pump base 11. The driving device 21 of the driving unit 20 is connected to the external magnetic steel 23 through the transmission shaft 22 for rotation. The outer magnetic steel 23 is sleeved on the outside of the mounting sleeve 112. When the driving device 21 drives the outer magnetic steel 23 to rotate, the magnetic force of the outer magnetic steel 23 is transmitted to the inner magnetic steel 131 through the mounting sleeve 112. The inner magnetic steel 131 and the outer magnetic steel 23 attract each other, and the inner magnetic steel 131 and the outer magnetic steel 23 rotate synchronously. The inner magnetic steel 13 and the water pump impeller 132 are a whole. Therefore, the rotation of the inner magnetic steel 13 directly drives the water pump impeller 132 to rotate, realizing the transmission of liquid. It can be seen from this that the magnetic transmission ice maker water pump realizes the magnetic transmission of the impeller assembly 13 and the outer magnetic steel 23, avoiding the loss of the pump body rotating parts and the shaft due to the instantaneous load when the water pump is started, improving the service life and reducing the maintenance cost.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention is included in the scope of the claims of the present invention.

Claims

1. A magnetically driven ice-making machine water pump, comprising a support frame, characterized in that: The magnetic transmission ice maker water pump comprises a pump body unit arranged on the support frame, a drive unit arranged on the support frame, the pump body unit comprises a water pump base arranged on the support frame, a water pump housing arranged on the water pump base, an impeller assembly arranged between the water pump base and the water pump housing, and an impeller shaft arranged between the impeller assembly and the water pump housing, the water pump base comprises a base body arranged on the support frame, a mounting sleeve arranged on the bottom cover body, and the water pump housing comprises a housing body, a A water outlet is arranged on the outer shell body, and a water inlet is arranged on the outer shell body, the impeller assembly includes an inner magnet accommodated in the mounting sleeve, and a water pump impeller arranged on the inner magnet, the drive unit includes a drive device arranged on the support frame, a transmission shaft arranged on the drive device, and an outer magnet arranged on the transmission shaft, the outer magnet is a cylindrical structure, when the drive unit and the pump body unit are installed on the support frame, the inner magnet is accommodated in the mounting sleeve, and the outer magnet is sleeved on the outside of the mounting sleeve.

2. The magnetic transmission ice maker water pump according to claim 1, characterized in that: The driving unit further comprises an auxiliary impeller arranged at an end of the transmission shaft facing away from the outer magnetic steel.

3. The magnetic transmission ice maker water pump according to claim 1, characterized in that: The water pump casing further comprises at least one sealing groove arranged at one end of the casing body facing the water pump base, at least one sealing ring accommodated in the sealing groove, and a shaft mounting frame arranged on the inner side wall of the casing body, the shaft mounting frame being fixedly arranged in the water inlet, the central axis of the shaft mounting frame coinciding with the central axis of the impeller shaft, and one end of the impeller shaft being inserted into the shaft mounting frame.

4. The magnetic transmission ice maker water pump according to claim 1, characterized in that: The mounting sleeve comprises a mounting sleeve body and a limiting flange arranged on the mounting sleeve body.

5. The magnetic transmission ice maker water pump according to claim 4, characterized in that: The limiting flange is higher than the end surface of the base body, and the inner diameter of the shell body is larger than the outer diameter of the limiting flange.

6. The magnetic transmission ice maker water pump according to claim 1, characterized in that: The central axis of the water outlet and the central axis of the water inlet are perpendicular to each other.

7. The magnetic transmission ice maker water pump according to claim 1, characterized in that: The magnetic transmission ice maker water pump also includes a second support frame arranged on the support frame and used to support the drive unit, and the transmission shaft passes through the second support frame and is connected to the external magnetic steel.

8. The magnetic transmission ice maker water pump according to claim 1, characterized in that: The driving device comprises a rotor arranged on the transmission shaft, an iron core fixedly connected to the support frame and arranged around the outer side of the rotor, and a winding arranged on the iron core.

9. The magnetic transmission ice maker water pump according to claim 1, characterized in that: The central axes of the impeller shaft, the inner magnetic steel, the outer magnetic steel, and the transmission shaft coincide with each other.

10. The magnetic transmission ice maker water pump according to claim 1, characterized in that: The inner diameter of the outer magnetic steel is larger than the outer diameter of the mounting sleeve, and the diameter of the inner magnetic steel is smaller than the inner diameter of the mounting sleeve.

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