Condensate water preventing structure of water pump driving plate and water pump

Abstract

The invention relates to a water pump driving plate condensate water preventing structure and a water pump, the water pump driving plate condensate water preventing structure is arranged between a machine base and a motor shell, and the water pump driving plate condensate water preventing structure comprises a condensate water preventing body and a plurality of conductive connecting bodies; the condensate water preventing body comprises a plurality of machine base connecting parts and a plurality of motor shell connecting parts. The engine base connecting part is arranged on one side, close to the engine base, of the condensate water preventing body and is used for being connected with the engine base; the motor shell connecting part is arranged on one side, close to the motor shell, of the condensate water preventing body and is used for being connected with the motor shell; the conductive connecting body is arranged in the condensate water preventing body, one end of the conductive connecting body is connected with the corresponding machine base connecting part, and the other end of the conductive connecting body is connected with the corresponding motor shell connecting part.

Description

Technical Field

[0001] The present invention relates to the technical field of water pumps, and in particular to a water pump drive plate anti-condensation water structure and a water pump. Background Art

[0002] The water pump driver board is placed in a plastic housing with a base at the bottom. If the water pump is used in a low-temperature environment, the low-temperature water may cause the temperature of the water pump driver board to drop, which may cause condensation to form on the water pump driver board.

[0003] The anti-condensation water pump is provided with a temperature-insulating anti-condensation water structure between the base and the motor, which is provided between the base and the motor housing. In the prior art, the base and the motor housing have a single-point connection structure.

[0004] However, water pumps with anti-condensation water function are prone to fail to meet the household interference power emission standard (GB4343.1).

[0005] Therefore, there is an urgent need for a water pump drive plate anti-condensation water structure to solve the above technical problems. Summary of the Invention

[0006] The object of the present invention is to provide a water pump drive plate anti-condensation water structure and a water pump, so as to realize the water pump having the function of anti-condensation water while reducing the power disturbance level.

[0007] To achieve the above objectives, the present invention provides a water pump drive plate anti-condensation water structure, which is arranged between the base and the motor housing, and includes:

[0008] Condensation-proof body and multiple conductive connectors;

[0009] The anti-condensation water body includes a plurality of base connecting parts and a plurality of motor casing connecting parts;

[0010] The base connection portion is provided on a side of the anti-condensation water body close to the base, and is used for connecting to the base;

[0011] The motor casing connection portion is provided on a side of the anti-condensation water body close to the motor casing, and is used for connecting to the motor casing;

[0012] The conductive connector is arranged inside the anti-condensation water body, one end of which is connected to a corresponding one of the base connecting parts, and the other end of which is connected to a corresponding one of the motor casing connecting parts.

[0013] Optionally, the anti-condensation water body is made of heat-insulating material.

[0014] Optionally, the anti-condensation water body is made of plastic.

[0015] Optionally, the conductive connector is injection molded into the anti-condensation water body.

[0016] Optionally, the number of the conductive connectors is 2.

[0017] Optionally, the number of the base connection parts is 2-4 and the number of the motor casing connection parts is 2-6.

[0018] Optionally, the base connection portion is configured as a threaded hole for connection to the base via screws; the motor casing connection portion is configured as a threaded hole for connection to the motor casing via screws.

[0019] On the other hand, the present invention provides a water pump, comprising the water pump drive plate anti-condensation water structure provided in any embodiment of the present application.

[0020] As can be seen from the above, the technical solution provided by the present invention solves the problem of exceeding the interference power test standard when the water pump base is connected to the motor casing at a single point in the prior art by providing a conductive connector inside the anti-condensation water body, thereby reducing the power interference level and meeting the household interference power emission standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of an anti-condensation water pump provided by an embodiment of the present invention;

[0022] Figure 2 2. It is a perspective structural diagram of a water pump drive plate anti-condensation water structure provided by an embodiment of the present invention;

[0023] Figure 3 is a cross-sectional view of a water pump drive plate anti-condensation water structure provided by an embodiment of the present invention;

[0024] Figure 4 Schematic diagram of a disturbance circuit A1 of power disturbance present in a water pump according to an embodiment of the present invention;

[0025] Figure 5 Schematic diagram of a disturbance circuit B1 of power disturbance present in a water pump according to an embodiment of the present invention;

[0026] Figure 6 is a curve chart of the disturbance power test provided by an embodiment of the present invention;

[0027] Figure 7 This is another curve chart of a disturbance power test provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific embodiments. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only show portions relevant to the present invention, not all of them.

[0029] Some directional words are defined in the present invention. Unless otherwise specified, the directional words used, such as "up", "down", "left", "right", "inside" and "outside", are used for ease of understanding and therefore do not constitute a limitation on the scope of protection of the present invention.

[0030] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0032] This embodiment provides a water pump drive plate anti-condensation water structure, such as Figure 1-3 As shown, the water pump drive plate anti-condensation water structure 100 is arranged between the base 200 and the motor housing 300, including:

[0033] Condensation prevention body 110 and a plurality of conductive connectors 120;

[0034] The anti-condensation water body 110 includes a plurality of base connection parts 111 and a plurality of motor housing connection parts 112;

[0035] The base connection portion 111 is provided on a side of the anti-condensation water body 110 close to the base 200 and is used to connect to the base 200;

[0036] The motor housing connection portion 112 is provided on a side of the anti-condensation water body 110 close to the motor housing 300 and is used to connect to the motor housing 300;

[0037] The conductive connector 120 is disposed inside the anti-condensation water body 110 , with one end thereof connected to a corresponding one of the base connecting portions 111 , and the other end thereof connected to a corresponding one of the motor housing connecting portions 112 .

[0038] The anti-condensation structure of the water pump drive board is a motor housing structure connected between the base and the motor. The base and the motor housing are connected by a conductive connector 120. The conductive connector 120 is arranged in the anti-condensation body 110, and the two ends are respectively connected to a base connection part 111 and a motor housing connection part 112. The base can be fixedly connected to the base connection part 111 using screws, and the motor housing can be fixedly connected to the motor housing connection part 112. In this application, the anti-condensation structure of the water pump drive board includes multiple conductive connectors 120 to reduce inductive reactance, thereby achieving the effect of reducing power interference levels. The conductive connector is strip-shaped and made of metal, such as copper.

[0039] This structure is different from the integrated frame and motor structure of water pumps without condensation protection. In the electromagnetic interference circuit generated by the water pump motor itself, if the frame and motor housing are connected at only a single point, the interference current will pass through this conductive connection, forming an interference voltage on the inductive reactance of the conductive connection itself.

[0040] like Figure 4 As shown in the figure, the motor interference loop A1 (shown by the red dashed line) is: motor interference source A1 (current and voltage changes on the motor stator) -> driver board -> Y-capacitor and distributed capacitance between the driver board and motor base -> motor base -> conductive connector -> motor housing -> distributed capacitance between the housing and stator -> motor interference source. The driver board itself has Y-capacitors, which are necessary for EMC measures. Distributed capacitance is a parasitic distributed parameter inherent to the structure. The Y-capacitors provide a low-impedance path for EMC noise sources, reducing external emissions.

[0041] like Figure 5 As shown in the figure, under the action of the disturbance current, the conductive connector 1 becomes the disturbance source of another loop. The disturbance loop B1 is: conductive connector disturbance source b1->base->plug ground wire b2->spatial distributed capacitance between plug ground wire and motor housing b3->motor housing->conductive connector disturbance source.

[0042] Among them, the power absorbing clamp in the test is added to the power line, which also includes the ground line, so that the interference power on the ground line is measured.

[0043] When the inductive reactance of the conductive connection is large, the disturbance current in the disturbance loop A generates a larger disturbance voltage on it. In the disturbance loop B, the voltage of the disturbance source of the conductive connection increases, the loop current increases, and the disturbance power level detected by the absorbing clamp increases.

[0044] When the inductive reactance of the conductive connection is small, the disturbance current in the disturbance loop A generates a smaller disturbance voltage on it. In the disturbance loop B, the voltage of the disturbance source of the conductive connection decreases, the loop current decreases, and the disturbance power level detected by the absorbing clamp decreases.

[0045] When the pump base is connected to the motor housing at a single point, the interference power test is likely to exceed the standard. The embodiment of the present application uses multiple conductive connectors to connect between the base and the motor housing, reducing the inductive reactance of the conductive connectors, thereby achieving the effect of reducing the power interference level. Figure 6 As shown, the disturbance power curve when a single conductive connection is used is Figure 7 As shown in Figure 2, the interference power curve when two conductive connectors are used has the effect of reducing the power interference level.

[0046] Optionally, the anti-condensation water body is made of a heat-insulating material, which has poor thermal performance and is a poor conductor of heat.

[0047] Optionally, the anti-condensation water body is made of plastic.

[0048] Optionally, the conductive connector is injection molded into the anti-condensation water body. In this implementation, the conductive connector can be made of copper and then injection molded into the anti-condensation water body made of plastic.

[0049] Optionally, the number of the conductive connectors is 2. The two conductive connectors are equivalent to being connected in parallel, which can reduce inductive reactance.

[0050] Optionally, the number of the base connection parts is 2-4 and the number of the motor housing connection parts is 2-6. Figure 2 As shown, the number of base connection parts is 4, the number of motor casing connection parts is 6, and as shown in the perspective view, the base connection parts and the motor casing connection parts are arranged on different surfaces of the anti-condensation water body, but when projected on one side of the anti-condensation water body, the projections of the base connection parts and the motor casing connection parts have no overlapping area.

[0051] Optional, such as Figure 3 The base connection portion is configured as a threaded hole for connecting to the base via screws; the motor casing connection portion is configured as a threaded hole for connecting to the motor casing via screws.

[0052] On the other hand, the present invention provides a water pump, comprising the water pump drive plate anti-condensation water structure provided in any of the above embodiments. Figure 1 For example, the water pump may include a drive plate 31, a base 200, a base screw 201, a conductive connector 120, a motor casing screw 301, a motor casing 300, a water pump plastic shell 32, an anti-condensation water body 110, a motor stator 33, a motor rotor 34, and a water pump impeller 35.

[0053] Although the present invention has been described in detail above using general explanations, specific embodiments, and experiments, it will be apparent to those skilled in the art that modifications and improvements may be made based on the present invention. Therefore, such modifications and improvements, which do not depart from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A water pump drive plate anti-condensation water structure, characterized in that: Set between the base and the motor housing, including: Condensation-proof body and multiple conductive connectors; The anti-condensation water body includes a plurality of base connecting parts and a plurality of motor casing connecting parts; The base connection portion is provided on a side of the anti-condensation water body close to the base, and is used for connecting to the base; The motor casing connection portion is provided on a side of the anti-condensation water body close to the motor casing, and is used for connecting to the motor casing; The conductive connector is arranged inside the anti-condensation water body, one end of which is connected to a corresponding one of the base connecting parts, and the other end of which is connected to a corresponding one of the motor casing connecting parts.

2. The water pump drive plate anti-condensation water structure according to claim 1, characterized in that: The anti-condensation water body is made of heat-insulating material.

3. The water pump drive plate anti-condensation water structure according to claim 2, characterized in that: The anti-condensation water body is made of plastic.

4. The water pump drive plate anti-condensation water structure according to claim 3, characterized in that: The conductive connector is injection molded into the condensation-proof body.

5. The water pump drive plate anti-condensation water structure according to claims 1-4, characterized in that: The number of the conductive connectors is 2.

6. The water pump drive plate anti-condensation water structure according to claim 5, characterized in that: The number of the base connection parts is 2-4 and the number of the motor housing connection parts is 2-6.

7. The water pump drive plate anti-condensation water structure according to claim 6, characterized in that: The base connection portion is configured as a threaded hole for connecting to the base via screws; the motor housing connection portion is configured as a threaded hole for connecting to the motor housing via screws.

8. A water pump, characterized in that: The water pump drive plate anti-condensation water structure comprises any one of claims 1-7.

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