New energy efficient energy-saving water pump motor cooling unit

Abstract

The invention belongs to the technical field of motor cooling, and particularly relates to a new energy efficient energy-saving water pump motor cooling unit which comprises a liquid delivery pump and a motor driving the liquid delivery pump, the motor is provided with a cooling system, a shell of the motor is provided with a cooling jacket, and a water inlet pipe or a water outlet pipe of the liquid delivery pump is provided with a heat exchanger. A pipeline of the cooling system is connected with the heat exchanger and a cooling jacket of the motor, a cooling medium in the cooling system forms cooling circulation between the heat exchanger and the cooling jacket of the motor, and a conveying medium of the liquid conveying pump is used for cooling the cooling medium in the cooling system. Extra energy consumption of a heat dissipation fan in a traditional water-cooling heat dissipation system is avoided, and therefore energy consumption of the whole vehicle is obviously reduced. And the traditional gas-liquid heat exchange is optimized into liquid-liquid heat exchange, so that the heat exchange efficiency and the heat dissipation effect are greatly improved.

Description

Technical Field

[0001] The invention relates to a new energy efficient and energy-saving water pump motor cooling unit, belonging to the technical field of motor cooling. Background Art

[0002] The heat dissipation of the water pump motor, especially the water pump motor of the new energy sprinkler truck, is a key factor to ensure its normal operation and extend its service life. The conventional cooling method of the water pump of the new energy sprinkler truck is to transfer the heat of the water pump motor to the water cooling circulation system to form a closed cycle. When the cooling medium flows through the cooler with a heat sink or a heat dissipation pipeline, the heat dissipation fan equipped with the cooler is used to accelerate the heat dissipation of the cooler. Its disadvantages are: 1. Increased energy consumption: The new energy sprinkler truck itself relies on battery power, and the conventional water cooling system requires additional electricity to drive the cooling fan, thereby increasing the energy consumption of the entire vehicle, which is particularly critical in new energy vehicles that pursue energy efficiency and cruising range. 2. Poor heat dissipation effect: The heat dissipation of the cooler is accelerated by the cooling fan. In essence, the liquid and air conduct heat exchange. Not only is the heat exchange efficiency low, but also the gap of the heat sink will be blocked after the cooler is used for a long time, and the surface of the heat sink or heat dissipation pipeline will be covered with dust or other impurities (such as various floccules) and affect the heat dissipation. 3. High noise: The drive motor drives the cooling fan to rotate at a high speed, generating noise. 4. Large size: Installing the drive motor and cooling fan takes up a lot of space. Summary of the invention

[0003] In view of the above deficiencies in the prior art, the technical problem to be solved by the present invention is: to provide a new energy high-efficiency and energy-saving water pump motor cooling unit, which provides a new solution for the heat dissipation of the water pump motor of the new energy sprinkler truck through a more efficient and energy-saving heat dissipation method.

[0004] The new energy efficient and energy-saving water pump motor cooling unit described in the present invention comprises a liquid delivery pump and a motor driving the pump, the motor is equipped with a cooling system, a cooling jacket is provided on the motor housing, a heat exchanger is provided on the water inlet pipe or the drain pipe of the liquid delivery pump, the pipeline of the cooling system connects the heat exchanger and the cooling jacket of the motor, the cooling medium in the cooling system forms a cooling cycle between the heat exchanger and the cooling jacket of the motor, and the delivery medium of the liquid delivery pump is used to cool the cooling medium in the cooling system.

[0005] Wherein, the pipeline of the cooling system is also connected to the cooling pipeline in the motor control box, and cools the motor control box at the same time.

[0006] The cooling system of the present invention is also provided with a gas-liquid separator on its pipeline to separate the gas and liquid in the system from each other, thereby improving the heat exchange efficiency and ensuring the normal operation of the system.

[0007] Preferably, the cooling jacket on the motor housing, the cooling pipeline in the motor control box, and the gas-liquid separator are connected in series.

[0008] The present invention also includes a cooling medium box, the bottom of which is connected to the pipeline of the cooling system. According to the direction of the cooling cycle, the cooling medium box is located after the gas-liquid separator, and the top of the gas-liquid separator is connected to the top of the cooling medium box through a pipeline. The cooling medium box is not only used to add coolant into the system, but also serves as a "second gas-liquid separator". The water vapor with droplets on the top of the gas-liquid separator enters the top of the cooling medium box through the pipeline on the top of the gas-liquid separator, and the droplets fall into the bottom of the cooling medium box and return to the cooling system, while the gas gathers at the top of the cooling medium box.

[0009] One form of the heat exchanger is that the heat exchanger includes a heat exchange sleeve mounted on a water inlet pipe or a drain pipe, a heat exchange cavity is formed between the heat exchange sleeve and the water inlet pipe or the drain pipe, and the heat exchange cavity connects a cooling medium inlet and a cooling medium outlet.

[0010] Another form of the heat exchanger is that the heat exchanger includes a heat exchange coil located in a water inlet pipe or a drain pipe, and the heat exchange coil is connected to a cooling medium inlet and a cooling medium outlet.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. High efficiency and energy saving: The present invention uses the conveying medium of the liquid delivery pump (such as the water resources of the sprinkler truck itself) to directly cool the cooling medium in the cooling system, avoiding the extra energy consumption of the cooling fan in the traditional water cooling system, thereby significantly reducing the energy consumption of the whole vehicle. This design not only meets the needs of new energy vehicles for energy efficiency and cruising range, but also helps to improve the environmental performance of the vehicle.

[0013] 2. Improve heat dissipation effect: The present invention optimizes the heat exchange from gas-liquid to liquid-liquid through innovative cooling cycle design, so that the cooling medium can form an efficient cooling cycle between the heat exchanger and the cooling jacket of the motor. At the same time, the setting of the gas-liquid separator effectively avoids the mixing of gas and liquid in the system, thereby improving the heat exchange efficiency. In addition, the cooling medium box, as an additional function of the "second gas-liquid separator", further ensures the purity and stability of the cooling medium in the cooling system, thereby improving the heat dissipation effect.

[0014] 3. Reduce maintenance: The cooling fan and heat sink in the traditional water cooling system are prone to dust accumulation and clogging, and need to be cleaned and maintained regularly. However, the present invention avoids the dust accumulation and clogging of these components through an innovative heat dissipation method, thereby reducing maintenance costs and maintenance difficulties.

[0015] 4. Low noise: The drive motor and cooling fan are eliminated, which greatly reduces the noise, and the noise can be reduced by more than 10 decibels.

[0016] 5. Small size: The drive motor and cooling fan are eliminated, thereby reducing the installation volume, which can be reduced by more than 1 / 3. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a partial cross-sectional schematic diagram of the present invention;

[0018] Figure 2 It is one of the overall structural schematic diagrams of the present invention;

[0019] Figure 3 This is the second schematic diagram of the overall structure of the present invention;

[0020] Figure 4 This is the third schematic diagram of the overall structure of the present invention;

[0021] Figure 5 This is the fourth schematic diagram of the overall structure of the present invention;

[0022] Figure 6 It is a structural diagram of an embodiment of a heat exchanger;

[0023] Figure 7 It is a structural diagram of another embodiment of a heat exchanger.

[0024] In the figure: 1, circulation pump; 2, pipe I; 3, motor control box; 4, pipe II; 5, motor; 6, pipe III; 7, cooling medium inlet; 8, heat exchange chamber; 9, cooling medium outlet; 10, pipe IV; 11, water inlet pipe; 12, drain pipe; 13, impeller; 14, output shaft; 15, base; 16, bracket; 17, heat exchange sleeve; 18, pipe V; 19, gas-liquid separator; 20, cooling medium box; 21, liquid filling port; 22, pipe VI; 23, heat exchange coil; 24, liquid delivery pump. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with specific embodiments.

[0026] However, the description of the present invention is merely an embodiment of structural and even functional description, and the scope of rights of the present invention is not limited by the embodiments described in the text.

[0027] For example, multiple embodiments may have various modifications and various forms, and it should be understood that the scope of rights of the present invention includes equivalents that can implement the technical concept.

[0028] Embodiment 1:

[0029] like Figures 1 to 6As shown, this embodiment is realized by the following technical scheme: including a liquid delivery pump 24 (for delivering water or other liquid media), a motor 5 driving the pump, and a motor control box 3 of the motor 5, the impeller 13 of the liquid delivery pump 24 is directly mounted on the output shaft 14 of the motor 5, the liquid delivery pump 24 is integrated with the motor 5, the volume is greatly reduced, and the need for the narrow installation space of the special vehicle is met. The motor 5 is fixed on the base 15, and the motor control box 3 is fixed on the bracket 16.

[0030] The motor 5 is equipped with a cooling system, which includes a circulating pump 1. The water outlet of the circulating pump 1 is connected to the water inlet of the cooling pipeline in the motor control box 3 through a pipe I2. The water outlet of the cooling pipeline of the motor control box 3 is connected to the water inlet of the cooling jacket on the motor 5 housing through a pipe II4. The water outlet of the cooling jacket is connected to the cooling medium inlet 7 of the heat exchanger arranged on the water inlet pipe 11 through a pipe III6. The cooling medium outlet 9 is connected to the gas-liquid separator 19 through a pipe IV10. The gas-liquid separator 19 is connected to the water inlet of the circulating pump 1 through a pipe V18. Among them, the top of the gas-liquid separator 19 is also connected to the top of the cooling medium box 20 through a pipe through a pipe VI22, and a liquid filling port 21 is provided on the top of the cooling medium box 20.

[0031] The heat exchanger of this embodiment includes a heat exchange sleeve 17 mounted on the water inlet pipe 11 (it can also be mounted on the drain pipe 12), and a heat exchange chamber 8 (containing a cooling medium) is formed between the heat exchange sleeve 17 and the water inlet pipe 11. The heat exchange chamber 8 is connected to the cooling medium inlet port 7 and the cooling medium outlet port 9.

[0032] Embodiment 2:

[0033] like Figure 7 As shown, the heat exchanger of this embodiment includes a heat exchange coil 23 located in the water inlet pipe 11 (or in the drain pipe 12), and the heat exchange coil 23 connects the cooling medium inlet 7 and the cooling medium outlet 9. Other structures are the same as those of the first embodiment.

[0034] The cooling medium in the cooling system forms a cooling cycle between the heat exchanger, the cooling jacket of the motor 5 and the cooling pipeline of the motor control box 3. The conveying medium of the liquid conveying pump 24 is used to cool the cooling medium in the cooling system, avoiding the extra energy consumption of the cooling fan in the traditional water cooling system, thereby significantly reducing the energy consumption of the whole vehicle. In addition, the previous gas-liquid heat exchange is optimized to liquid-liquid heat exchange, which greatly improves the heat exchange efficiency and improves the heat dissipation effect by more than 15%.

[0035] Of course, the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and equal changes and improvements made by ordinary technicians in the technical field within the essential scope of the present invention should all fall within the scope of the patent coverage of the present invention.

Claims

1. A new energy efficient and energy-saving water pump motor cooling unit, comprising a liquid delivery pump (24) and a motor (5) driving the pump, the motor (5) being equipped with a cooling system, characterized in that: A cooling jacket is provided on the housing of the motor (5); a heat exchanger is provided on the water inlet pipe (11) or the drain pipe (12) of the liquid delivery pump (24); a pipeline of the cooling system connects the heat exchanger and the cooling jacket of the motor (5); a cooling medium in the cooling system forms a cooling cycle between the heat exchanger and the cooling jacket of the motor (5); and the delivery medium of the liquid delivery pump (24) is used to cool the cooling medium in the cooling system.

2. The new energy efficient and energy-saving water pump motor cooling unit according to claim 1 is characterized in that: The pipeline of the cooling system is also connected to the cooling pipeline in the motor control box (3).

3. The new energy efficient and energy-saving water pump motor cooling unit according to claim 2 is characterized in that: A gas-liquid separator (19) is also provided on the pipeline of the cooling system.

4. The new energy efficient and energy-saving water pump motor cooling unit according to claim 3 is characterized in that: The cooling jacket on the motor (5) housing, the cooling pipeline in the motor control box (3), and the gas-liquid separator (19) are connected in series.

5. The new energy efficient and energy-saving water pump motor cooling unit according to claim 3 is characterized in that: It also includes a cooling medium box (20), the bottom of which is connected to the pipeline of the cooling system. According to the direction of the cooling cycle, the cooling medium box (20) is located after the gas-liquid separator (19), and the top of the gas-liquid separator (19) is connected to the top of the cooling medium box (20) through a pipeline.

6. The new energy efficient and energy-saving water pump motor cooling unit according to claim 1 is characterized in that: The heat exchanger comprises a heat exchange sleeve (17) sleeved on a water inlet pipe (11) or a drain pipe (12), a heat exchange chamber (8) is formed between the heat exchange sleeve (17) and the water inlet pipe (11) or the drain pipe (12), and the heat exchange chamber (8) is connected to a cooling medium inlet (7) and a cooling medium outlet (9).

7. The new energy efficient and energy-saving water pump motor cooling unit according to claim 1 is characterized in that: The heat exchanger comprises a heat exchange coil (23) located in the water inlet pipe (11) or the drain pipe (12), and the heat exchange coil (23) is connected to the cooling medium inlet (7) and the cooling medium outlet (9).

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