An automatically adjustable motor cooling device and motor

Abstract

This invention provides an automatically adjustable motor cooling device and motor, which effectively solves the problem of excessive temperature rise in localized heat concentration areas of wet motors. The motor cooling device includes a radiator and a temperature control drive mechanism disposed inside the motor; the radiator contains a liquid storage cylinder; the liquid storage cylinder is mounted on the outer wall of the radiator between a first chamber and a third chamber, and the cylinder wall can slide up and down along the mounting point with the radiator outer wall; the temperature control drive mechanism is used to drive the liquid storage cylinder to extend into the first chamber or retract into the third chamber according to the temperature of the coolant in the cylinder. The liquid storage cylinder is mounted on the outer wall of the radiator between the first and third chambers, and the cylinder wall can slide up and down along the mounting point with the radiator outer wall. In conjunction with the temperature control drive mechanism, when the coolant temperature is high, the liquid storage cylinder is extended into the medium delivery channel for cooling, and when the coolant temperature is low, it is retracted.

Description

Technical Field

[0001] This invention belongs to the field of power engineering and engineering thermophysics, and specifically relates to an automatically adjustable motor cooling device and motor. Background Technology

[0002] High-power, high-speed wet motors employ an independent internal cooling circulation loop for motor cooling and heat dissipation.

[0003] In the existing structure, the internal cooling water of the motor is isolated from the external conveying medium, and heat exchange occurs between the motor and the external conveying medium through the inner wall of the motor or cooling pipes.

[0004] In the current motor structure, the heat exchange capacity is relatively limited, which is insufficient to adequately cool the motor coolant. In particular, the areas inside the motor near the stator and rotor where heat is concentrated are often not cooled sufficiently, leading to excessive temperature rise in the unit, motor damage, and losses. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automatically adjustable motor heat dissipation device and motor, which can effectively solve the problem of excessive temperature rise in the local heat concentration area of ​​the aforementioned wet motor.

[0006] To achieve the above objectives, the present invention is implemented using the following technical solution:

[0007] In a first aspect, the present invention provides an automatically adjustable motor cooling device, wherein the motor is internally divided into:

[0008] The first chamber is located in the area enclosed between the outer wall and the inner wall of the motor, which is the pumping medium passage.

[0009] The second chamber is located in the area enclosed by the inner wall of the motor;

[0010] The third chamber is located in the internal area enclosed by the outer wall of the radiator;

[0011] The device includes a radiator and a temperature control drive mechanism disposed inside the motor; a liquid storage cylinder is provided inside the radiator; the liquid storage cylinder is mounted on the outer wall of the radiator between the first chamber and the third chamber, and the wall of the liquid storage cylinder can slide up and down along the mounting point with the outer wall of the radiator.

[0012] The temperature control drive mechanism is used to drive the liquid storage cylinder to extend into the first chamber or retract into the third chamber according to the temperature of the coolant in the liquid storage cylinder.

[0013] The above setup achieves the following effect: the liquid storage cylinder is mounted on the outer wall of the radiator between the first and third chambers, and the wall of the liquid storage cylinder can slide up and down along the mounting point with the outer wall of the radiator. In conjunction with the temperature drive mechanism, the liquid storage cylinder is extended into the medium delivery channel for cooling when the coolant temperature is high, and retracted when the coolant temperature is low.

[0014] Furthermore, the temperature control drive mechanism includes: a turbine impeller disposed in the first chamber, a pump impeller fixed in the third chamber, a temperature control commutator disposed in the liquid storage cylinder, and a telescopic cylinder fixed in the third chamber;

[0015] The turbine impeller and the pump impeller are connected by a connecting shaft and transmit torque. The connecting shaft passes through the outer wall of the radiator. The pump impeller is connected to the input port of the second chamber and the temperature control commutator, respectively, and is used to deliver the coolant in the second chamber to the temperature control commutator.

[0016] The telescopic cylinder is located at the bottom of the liquid storage cylinder and is used to push the liquid storage cylinder; the telescopic cylinder includes a cylinder body and a piston, piston rod and spring disposed in the cylinder body; the piston divides the inner cavity of the telescopic cylinder into a rod chamber and a rodless chamber; one end of the spring is connected to the piston and the other end is connected to the outer wall of the radiator; one end of the piston rod is connected to the piston and the other end is connected to the wall of the liquid storage cylinder.

[0017] The input port of the temperature control commutator is connected to the pump impeller through the pump outlet pipe B and the pump outlet pipe A in sequence; the output port of the temperature control commutator is connected to the rodless chamber and the rod chamber of the telescopic cylinder through the temperature controller outlet pipe A and the temperature controller outlet pipe B respectively; the temperature control commutator is connected to the second chamber through the temperature controller outlet pipe C and the pump outlet pipe D in sequence.

[0018] When the temperature in the storage tank is lower than the preset value, the temperature control commutator connects the pump outlet pipe B with the temperature controller outlet pipe B, and also connects the temperature controller outlet pipe A with the temperature controller outlet pipe C.

[0019] When the temperature in the storage tank is higher than the preset value, the temperature control commutator connects the pump outlet pipe B with the temperature controller outlet pipe A, and also connects the temperature controller outlet pipe B with the temperature controller outlet pipe C.

[0020] The above setup achieves the following effect: In the media delivery channel, the delivered medium continuously impacts the turbine impeller, causing it to rotate. The rotation of the turbine impeller transmits torque to the pump impeller via the connecting shaft. The rotating pump impeller then pressurizes the coolant in the second chamber and delivers it to the temperature control commutator through the pump inlet pipe.

[0021] When the temperature in the reservoir is lower than the preset value, pump outlet pipe B connects to thermostat outlet pipe B via a temperature control reversing device, and thermostat outlet pipe A connects to thermostat outlet pipe C via a temperature control reversing device. At this time, the pressurized fluid at the pump impeller enters the rod chamber of the telescopic cylinder via pump outlet pipe A, pump outlet pipe B, temperature control reversing device, and thermostat outlet pipe B. The piston in the telescopic cylinder, under pressure, moves the piston rod downwards. The other end of the piston rod connects to the bottom of the radiator cylinder wall, and the entire reservoir is located in the third chamber. In the rodless chamber of the telescopic cylinder, coolant flows through thermostat outlet pipe A, through the temperature control reversing device, then through thermostat outlet pipe C and pump outlet pipe D, returning to the second chamber.

[0022] When the coolant temperature reaches the switching temperature of the temperature control commutator, pump outlet pipes A and B are connected to the temperature controller outlet pipe A via the temperature control commutator, and temperature controller outlet pipe B is connected to the temperature controller outlet pipe C via the temperature control commutator. At this time, the pressurized fluid at the pump impeller enters the rodless chamber of the telescopic cylinder via pump outlet pipes A and B, the temperature control commutator, and the temperature controller outlet pipe A. Due to the force applied, the piston in the telescopic cylinder drives the piston rod upwards. The other end of the piston rod is connected to the bottom of the radiator wall, meaning the entire reservoir is located in the first chamber.

[0023] Furthermore, a one-way valve B is installed in the outlet pipe C of the thermostat. The flow direction allowed by the one-way valve B is: the thermostat reversing device flows unidirectionally to the pump outlet pipe D.

[0024] A one-way valve C is installed in the pump outlet pipe B. The flow direction allowed by the one-way valve C is: unidirectional flow from the pump outlet pipe A to the temperature control reversing device.

[0025] The effect of the above settings is that the check valve can prevent liquid cross-flow.

[0026] Furthermore, a pump outlet pipe C is provided between the pump outlet pipe A and the pump outlet pipe D, and an overflow valve is provided on the pump outlet pipe C. The control pressure of the overflow valve is controlled by the outlet pressure of the pump impeller.

[0027] The effect of the above settings is as follows: When the piston reaches the bottom position, the rodless chamber of the telescopic cylinder continuously receives fluid, causing the pressure in the rodless chamber to rise. When the pressure in the rodless chamber rises to the threshold of the relief valve, the relief valve branch opens, meaning that the pressurized fluid at the pump impeller flows back to the second chamber through pump outlet pipe A, pump outlet pipe C, relief valve, and pump outlet pipe D.

[0028] Furthermore, a one-way valve A is installed in the pump outlet pipe C. The permissible flow direction of the one-way valve A is: unidirectional flow from pump outlet pipe A to pump outlet pipe D.

[0029] Furthermore, the pump inlet pipe, pump outlet pipe A, pump outlet pipe B, pump outlet pipe C, thermostat outlet pipe A, thermostat outlet pipe B, thermostat outlet pipe C, and pump outlet pipe D are all made of retractable pipes or flexible hoses.

[0030] The above settings have the following effect: The pipe used in this invention can achieve displacement compensation in the front, back, left and right positions, which is suitable for situations where the pipeline position needs to be changed in this application, and prevents the pipeline from being damaged or failing due to displacement.

[0031] Furthermore, the wall of the liquid storage cylinder extends outward at the top to engage with the outer wall of the radiator;

[0032] The top of the liquid storage cylinder is equipped with a liquid storage cylinder cover.

[0033] In a second aspect, the present invention provides a wet motor, including the motor heat dissipation device as described in the first aspect.

[0034] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0035] The present invention provides an automatically adjustable motor cooling device that can control the up-and-down movement of the liquid storage cylinder according to the temperature around the temperature control commutator, thereby enabling better heat exchange of the coolant in the liquid storage cylinder, achieving better control of the internal temperature of the motor cavity, and extending the service life of the motor. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the motor cooling device.

[0037] Figure 2 This refers to the installation location of the motor cooling device within the motor.

[0038] Figure 3 This is a schematic diagram of a motor cooling device (the temperature-controlled commutator commutates when the temperature rises).

[0039] The components are: 1. Radiator outer wall; 2. Liquid reservoir wall; 3. Liquid reservoir cover; 4. Turbine impeller; 5. Connecting shaft; 6. Pump impeller; 7. Overflow valve; 8. Temperature control reversing device; 9. Telescopic cylinder; 10. Piston rod; 11. Piston; 12. Spring; 13. Pump inlet pipe; 14. Pump outlet pipe A; 15. Pump outlet pipe B; 16. Pump outlet pipe C; 17. Temperature controller outlet pipe A; 18. Temperature controller outlet pipe B; 19. Temperature controller outlet pipe C; 20. Pump outlet pipe D; 21. Check valve A; 22. Check valve B; 23. Check valve C; 101. Radiator outer wall hole;

[0040] I. First chamber; II. Second chamber; III. Third chamber; IV. Fourth chamber; V. Fifth chamber; VI. Sixth chamber. Detailed Implementation

[0041] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0042] In the description of this embodiment, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this embodiment.

[0043] Example 1:

[0044] This embodiment provides an automatically adjustable motor cooling device, such as... Figure 1-3 As shown, the structure includes a first chamber I, located in the area enclosed between the outer wall and the inner wall of the motor, i.e., the pumping medium channel; a second chamber II, located in the area enclosed by the inner wall of the motor; a third chamber III, located in the internal area enclosed by the outer wall 1 of the radiator; a fourth chamber IV, located in the area enclosed by the reservoir wall 2 and the reservoir cover 3; a fifth chamber V, the rod chamber of the telescopic cylinder 9; and a sixth chamber VI, the rodless chamber of the telescopic cylinder 9.

[0045] The reservoir wall 2 and reservoir cover 3 are connected with fasteners to form a closed cavity, namely the fourth chamber IV. The temperature control commutator 8 is fixed to the bottom of the reservoir wall 2 with fasteners. The temperature control commutator 8 is connected to the pump outlet pipe B15, the temperature controller outlet pipe A17, the temperature controller outlet pipe B18, and the temperature controller outlet pipe C19, respectively. When the temperature changes, its connection with the above four pipes changes.

[0046] The temperature of the temperature-controlled commutator 8 is controlled by the temperature of the coolant in the fourth chamber IV, which exchanges heat with the coolant in the third chamber III, and the coolant in the third chamber III exchanges heat with the coolant in the second chamber II. Under thermal equilibrium, the temperature of the temperature-controlled commutator 8 is controlled by the temperature of the coolant in the second chamber II.

[0047] When the coolant temperature in the second chamber II has not reached the switching temperature of the temperature control commutator 8, the pump outlet pipe B15 is connected to the temperature controller outlet pipe B18 via the temperature control commutator 8, and the temperature controller outlet pipe A17 is connected to the temperature controller outlet pipe C19 via the temperature control commutator 8. At this time, the pressurized fluid at the pump impeller 6 enters the rod chamber of the telescopic cylinder 9 through the pump outlet pipe A14, pump outlet pipe B15, temperature control commutator 8, and temperature controller outlet pipe B18. Due to the force applied, the piston 11 in the telescopic cylinder 9 drives the piston rod 10 to move downwards. The other end of the piston rod 10 is connected to the bottom of the radiator cylinder wall, and the entire radiator cylinder is located in the third chamber III.

[0048] The telescopic cylinder 9 is fixed to the bottom side of the outer wall 1 of the radiator using fasteners, and the piston 11 divides the inner cavity of the telescopic cylinder into a rod chamber and a rodless chamber.

[0049] One end of spring 12 is connected to piston 11, and the other end is connected to the bottom of telescopic cylinder 9. One end of piston rod 10 is connected to piston 11, and the other end is connected to the bottom of liquid storage cylinder wall 2.

[0050] The entire wall of the liquid storage cylinder 2 is located directly above the telescopic cylinder 9.

[0051] Turbine impeller 4 is fixed in the first chamber I, and pump impeller 6 is fixed in the third chamber III. Turbine impeller 4 and pump impeller 6 are connected and transmit torque through connecting shaft 5, which passes through the outer wall 1 of the radiator.

[0052] The inlet and outlet of turbine impeller 4 are both in the first chamber I. The conveying medium in the first chamber I flows in through the inlet of turbine impeller 4 and flows out through the outlet, driving turbine impeller 4 to rotate. Turbine impeller 4 transmits torque to pump impeller 6 through connecting shaft 5, causing pump impeller 6 to rotate. After pump impeller 6 rotates, it generates centrifugal force. The inlet of pump impeller 6 is connected to the second chamber II through pump inlet pipe 13, and the outlet is connected to pump outlet pipe A14.

[0053] The overflow valve 7 is located in the pump outlet pipe C16, and the control pressure of the overflow valve 7 is controlled by the outlet pressure of the pump impeller 6.

[0054] A one-way valve A21 is installed in the pump outlet pipe C16. The flow direction allowed by the one-way valve A21 is: unidirectional flow from the pump outlet pipe A14 to the pump outlet pipe D20.

[0055] A one-way valve B22 is installed in the outlet pipe C19 of the thermostat. The allowable flow direction of the one-way valve B22 is: unidirectional flow from the thermostat reversing device 8 to the pump outlet pipe D20.

[0056] A one-way valve C23 is installed in the pump outlet pipe B15. The flow direction allowed by the one-way valve C23 is: unidirectional flow from the pump outlet pipe A14 to the temperature control reversing device 8.

[0057] The thermostat outlet pipe A17 connects to the thermostat commutator 8 and the rodless chamber of the telescopic cylinder 9, while the thermostat outlet pipe B18 connects to the thermostat commutator 8 and the rod chamber of the telescopic cylinder.

[0058] Pump outlet pipe C16 connects pump outlet pipe A14 and pump outlet pipe D20;

[0059] The thermostat outlet pipe C19 connects to the thermostat commutator 8 and the pump outlet pipe D20;

[0060] Pump outlet pipe B15 connects to temperature control commutator 8 and pump outlet pipe A14;

[0061] One end of the pump outlet pipe D20 is connected to the second chamber II, and the other end is connected to the pump outlet pipe C16 and the thermostat outlet pipe C19 respectively.

[0062] One end of the pump outlet pipe A14 is connected to the outlet of the pump impeller 6, and the other end is connected to the pump outlet pipe B15 and the pump outlet pipe C16 respectively.

[0063] Pump inlet pipe 13, pump outlet pipe A14, pump outlet pipe B15, pump outlet pipe C16, thermostat outlet pipe A17, thermostat outlet pipe B18, thermostat outlet pipe C19, and pump outlet pipe D20 all use telescopic pipes or flexible hoses, which can achieve displacement compensation in the front, back, left, and right positions.

[0064] The liquid storage cylinder wall 2 can slide up and down along the assembly point with the outer wall 1 of the radiator.

[0065] The automatically adjustable motor cooling device can control the up and down movement of the liquid storage cylinder based on the temperature around the temperature control commutator 8, thereby improving the heat exchange of the coolant in the liquid storage cylinder, achieving better control of the internal temperature of the motor cavity, and extending the service life of the motor.

[0066] Implementation principle:

[0067] The motor cavity is filled with coolant, and the reservoir is also filled with coolant. (The coolant in the motor cavity and the reservoir can be the same or different.)

[0068] In the medium conveying channel, the conveyed medium continuously impacts the turbine impeller 4, causing it to rotate. The rotation of the turbine impeller 4 transmits torque to the pump impeller 6 through the connecting shaft 5. The rotation of the pump impeller 6 pressurizes the coolant in the second chamber II and delivers it to the temperature control commutator 8 through the pump inlet pipe 13.

[0069] The temperature of the temperature-controlled commutator 8 is controlled by the temperature of the coolant in the fourth chamber IV, which exchanges heat with the coolant in the third chamber III, and the coolant in the third chamber III exchanges heat with the coolant in the second chamber II. Under thermal equilibrium, the temperature of the temperature-controlled commutator 8 is controlled by the temperature of the coolant in the second chamber II.

[0070] When the coolant temperature in the second chamber II has not reached the switching temperature of the temperature control commutator 8, the pump outlet pipe B15 is connected to the temperature controller outlet pipe B18 via the temperature control commutator 8, and the temperature controller outlet pipe A17 is connected to the temperature controller outlet pipe C19 via the temperature control commutator 8. At this time, the pressurized fluid at the pump impeller 6 enters the rod chamber of the telescopic cylinder 9 through the pump outlet pipe A14, pump outlet pipe B15, temperature control commutator 8, and temperature controller outlet pipe B18. Due to the force applied, the piston 11 in the telescopic cylinder 9 drives the piston rod 10 to move downwards. The other end of the piston rod 10 is connected to the bottom of the radiator cylinder wall, and the entire radiator cylinder is located in the third chamber III.

[0071] In the rodless chamber of telescopic cylinder 9, the coolant flows through the temperature controller outlet pipe A17, through the temperature controller commutator 8, and then through the temperature controller outlet pipe C19 and the pump outlet pipe D20, before flowing back to the second chamber II.

[0072] When piston 11 reaches its bottom position, fluid continuously enters the rodless chamber of the telescopic cylinder, causing the pressure in the rodless chamber to rise. When the pressure in the rodless chamber rises to the threshold of the relief valve 7, the branch of the relief valve 7 opens, that is, the pressurized fluid at the pump impeller 6 flows back to the second chamber II through the pump outlet pipe A14, the pump outlet pipe C16, the relief valve 7, and the pump outlet pipe D20.

[0073] When the coolant temperature in the second chamber II reaches the switching temperature of the temperature control commutator 8, the pump inlet pipe 13 connects to the temperature controller outlet pipe A17 via the temperature control commutator 8, and the temperature controller outlet pipe B18 connects to the temperature controller outlet pipe C19 via the temperature control commutator 8. At this time, the pressurized fluid at the pump impeller 6 enters the rodless chamber of the telescopic cylinder 9 via the pump outlet pipe A14, pump outlet pipe B15, temperature control commutator 8, and temperature controller outlet pipe A17. Due to the force applied, the piston 11 in the telescopic cylinder 9 drives the piston rod 10 to move upward together. The other end of the piston rod 10 is connected to the bottom of the radiator cylinder wall, meaning the entire radiator cylinder is located in the first chamber I.

[0074] In the rod chamber of telescopic cylinder 9, coolant flows through the temperature controller outlet pipe B18, through the temperature controller commutator 8, then through the temperature controller outlet pipe C19, and through the pump outlet pipe D20, before flowing back to the second chamber II.

[0075] When piston 11 moves to the high position, the rod chamber of the telescopic cylinder continuously receives fluid, causing the pressure in the rod chamber to rise. When the pressure in the rod chamber rises to the threshold of the relief valve 7, the branch of the relief valve 7 opens, that is, the pressurized fluid at the pump impeller 6 flows back to the second chamber II through the pump outlet pipe A14, the pump outlet pipe C16, the relief valve 7, and the pump outlet pipe D20.

[0076] When the temperature of the temperature control commutator 8 drops below the commutation temperature, the pump outlet pipe A14 and pump outlet pipe B15 are connected to the temperature controller outlet pipe B18 via the temperature control commutator 8, and the temperature controller outlet pipe A17 is connected to the temperature controller outlet pipe C19 via the temperature control commutator 8.

[0077] The specific structure of the temperature control commutator 8 is a common structure and will not be described in detail here. Similarly, the turbine impeller 4, connecting shaft 5, and pump impeller 6 are also common structures. All parts not disclosed in this invention are prior art.

[0078] Example 2:

[0079] This embodiment provides a wet motor, including the motor heat dissipation device as described in Embodiment 1.

[0080] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0081] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0082] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0083] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the 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.

[0084] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. An automatically adjustable motor cooling device, wherein the motor is internally divided into: The first chamber is located in the area enclosed between the outer wall and the inner wall of the motor, which is the pumping medium passage. The second chamber is located in the area enclosed by the inner wall of the motor; The third chamber is located in the internal area enclosed by the outer wall of the radiator; Its features are, The device includes a radiator and a temperature control drive mechanism disposed inside the motor; a liquid storage cylinder is provided inside the radiator; the liquid storage cylinder is mounted on the outer wall of the radiator between the first chamber and the third chamber, and the wall of the liquid storage cylinder can slide up and down along the mounting point with the outer wall of the radiator. The temperature control drive mechanism is used to drive the liquid storage cylinder to extend into the first chamber or retract into the third chamber according to the temperature of the coolant in the liquid storage cylinder. The temperature control drive mechanism includes: a turbine impeller disposed in the first chamber, a pump impeller fixed in the third chamber, a temperature control commutator disposed in the liquid storage cylinder, and a telescopic cylinder fixed in the third chamber; The turbine impeller and the pump impeller are connected by a connecting shaft and transmit torque. The connecting shaft passes through the outer wall of the radiator. The pump impeller is connected to the input port of the second chamber and the temperature control commutator, respectively, and is used to deliver the coolant in the second chamber to the temperature control commutator. The telescopic cylinder is located at the bottom of the liquid storage cylinder and is used to push the liquid storage cylinder; the telescopic cylinder includes a cylinder body and a piston, piston rod and spring disposed in the cylinder body; the piston divides the inner cavity of the telescopic cylinder into a rod chamber and a rodless chamber; one end of the spring is connected to the piston and the other end is connected to the outer wall of the radiator; one end of the piston rod is connected to the piston and the other end is connected to the wall of the liquid storage cylinder. The input port of the temperature control commutator is connected to the pump impeller through the pump outlet pipe B and the pump outlet pipe A in sequence; the output port of the temperature control commutator is connected to the rodless chamber and the rod chamber of the telescopic cylinder through the temperature controller outlet pipe A and the temperature controller outlet pipe B respectively; the temperature control commutator is connected to the second chamber through the temperature controller outlet pipe C and the pump outlet pipe D in sequence. When the temperature in the storage tank is lower than the preset value, the temperature control commutator connects the pump outlet pipe B with the temperature controller outlet pipe B, and also connects the temperature controller outlet pipe A with the temperature controller outlet pipe C. When the temperature in the storage tank is higher than the preset value, the temperature control commutator connects the pump outlet pipe B with the temperature controller outlet pipe A, and also connects the temperature controller outlet pipe B with the temperature controller outlet pipe C.

2. The automatically adjusting motor cooling device according to claim 1, characterized in that, A one-way valve B is installed in the outlet pipe C of the thermostat. The flow direction allowed by the one-way valve B is: the thermostat reversing device flows unidirectionally to the pump outlet pipe D. A one-way valve C is installed in the pump outlet pipe B. The flow direction allowed by the one-way valve C is: unidirectional flow from the pump outlet pipe A to the temperature control reversing device.

3. The automatically adjusting motor cooling device according to claim 1, characterized in that, A pump outlet pipe C is also provided between the pump outlet pipe A and the pump outlet pipe D. An overflow valve is provided on the pump outlet pipe C, and the control pressure of the overflow valve is controlled by the outlet pressure of the pump impeller.

4. The automatically adjusting motor cooling device according to claim 3, characterized in that, A one-way valve A is installed in the pump outlet pipe C. The permissible flow direction of the one-way valve A is: unidirectional flow from pump outlet pipe A to pump outlet pipe D.

5. The automatically adjusting motor cooling device according to claim 3, characterized in that, Pump inlet pipe, pump outlet pipe A, pump outlet pipe B, pump outlet pipe C, thermostat outlet pipe A, thermostat outlet pipe B, thermostat outlet pipe C, and pump outlet pipe D all use retractable pipes or flexible hoses.

6. The automatically adjusting motor cooling device according to claim 1, characterized in that, The liquid storage cylinder wall extends outward at the top to engage with the outer wall of the radiator; The top of the liquid storage cylinder is equipped with a liquid storage cylinder cover.

7. A wet motor, comprising the motor cooling device as described in any one of claims 1-6.

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