A connecting structure of a water pump control box and a base

Abstract

This utility model discloses a connection structure between a water pump control box and a pump base, belonging to the field of pump units. The utility model includes a control box, the base of which has an electrical control mounting cavity for mounting an electrical control board. The base also has an insulating plate that divides the inner cavity of the base into two non-communicating electrical control mounting cavities and a fastening mounting cavity. The fastening mounting cavity contains fasteners that extend from within the cavity, with their bottom ends protruding through the bottom wall of the base and configured to be fixedly connected to the pump base, thus securing the control box to the pump base. This utility model makes the electrical control mounting cavity and the fastening mounting cavity independent, so even if a small amount of condensate is generated in the fastening mounting cavity, the condensate will not seep into the electrical control mounting cavity, thereby effectively improving the anti-condensation effect of the electrical control mounting cavity and avoiding adverse effects on the electrical control board.

Description

Technical Field

[0001] This utility model relates to the field of pump unit technology, and more specifically, to a connection structure between a water pump control box and a base. Background Technology

[0002] Existing water pumps transport low-temperature media in high-temperature and high-humidity environments. Condensation is easily generated at the pump's liquid-passing parts and in contact with them, such as the pump base. After condensation occurs on the surface of the pump base, the low temperature can easily be transferred to the housing. If the housing is not well sealed and there is a certain amount of moisture, condensation will easily form in the housing, causing short circuit failure of the components in the housing.

[0003] Currently, the common practice in the industry is to use a heat insulation board between the machine base and the housing to prevent the machine base from transferring low temperatures to the housing. The heat insulation board structure uses a soft rubber sealing structure to seal with both the machine base and the housing, reducing the entry of external moisture into the machine base and housing. However, in practice, shrinkage and flash are prone to occur during the injection molding of the soft rubber heat insulation board, resulting in poor sealing and failing to effectively prevent external moisture from entering the interior. Furthermore, adding a heat insulation board structure is relatively complex and has higher production costs.

[0004] A search revealed that patent CN213879495U discloses a junction box structure for an electric pump. The base has a lead-in hole, and the junction box has a lead-in hole. Lead wires pass through both the base lead-in hole and the junction box lead-in hole. An elastic lead-in sleeve is fitted over the lead wire, and the upper end of the elastic lead-in sleeve has an upper boss. The upper surface of the upper boss contacts and seals with the lower surface of the junction box, and the lower surface contacts and seals with the upper surface of the base. This design effectively prevents moisture damage to the electrical components inside the junction box, thus preventing water from entering the base and causing damage. Patent CN220890514U discloses a variable frequency shielded pump with a clearance fit between the control box and the motor housing. This clearance allows heat generated by the motor to be promptly conducted to the external space, significantly reducing heat transfer to the control box. The above designs have eliminated the heat insulation panel design, and have put forward new ideas for the installation of the box base and the base. The industry has never stopped exploring ways to further improve the anti-condensation performance of the control box. Utility Model Content

[0005] 1. Technical problem to be solved by the utility model

[0006] In view of the problem that condensation easily occurs inside the control box after the control box and the base are installed in the existing technology, which may affect the safety of electrical components, it is proposed to provide a connection structure between the water pump control box and the base, which simplifies the installation structure of the control box and the pump base, and at the same time has a better anti-condensation effect.

[0007] 2. Technical Solution

[0008] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0009] This utility model discloses a connection structure between a water pump control box and its base. The control box includes a base with an electrical control mounting cavity for mounting an electrical control board. The base also includes an isolation plate that divides the inner cavity of the control box into two separate electrical control mounting cavities and a fastening mounting cavity. The fastening mounting cavity contains fasteners that extend from within the cavity, with their bottom ends protruding through the bottom wall of the control box and configured to be fixedly connected to the pump base, thus securing the control box to the pump base. By isolating the cavity containing the electrical control board separately, moisture from the fastening mounting cavity can be effectively prevented from seeping into the electrical control mounting cavity.

[0010] To further reduce heat transfer between the pump base and the control box and reduce condensation, the system further includes a pump base with outward-protruding fixed feet around the bottom of the base. The pump base is equipped with corresponding fixed supports that are adapted to the fixed feet and protrude outward. At least one fastener protrudes from the fixed feet and is fixedly connected to the fixed supports, forming a gap channel between the bottom wall of the base and the surface of the pump base to reduce the contact area and promote ventilation and heat dissipation.

[0011] To further improve the sealing of the control box, a sealing element is installed around the base and cover of the control box. The sealing element covers the top surface of the fastening mounting cavity, preventing the top of the fastening mounting cavity from communicating with the electrical control mounting cavity. The sealing element also isolates the inside of the control box from the outside environment.

[0012] Furthermore, the fastener passes through the cover and extends downward into the fastening mounting cavity, with a seal surrounding the outer periphery of the fastener.

[0013] To facilitate quick installation, the fasteners are further designed as bolts, and the fixed support of the pump base has corresponding threaded holes. After the fasteners pass through the housing, they are threaded and tightened into the fixed support. The threaded holes in the fixed support are blind holes that do not communicate with the inner cavity of the pump base. This design utilizes the convenience of bolt installation and ensures a tight seal through the blind hole design.

[0014] To further reduce the contact area, the mounting feet at the bottom of the box are U-shaped, with fasteners protruding from the internal openings of the U-shaped feet. A drainage groove is provided on the wall surface of the U-shaped feet opposite the opening. This drainage groove allows for quick drainage when condensation occurs.

[0015] To further ensure installation stability, a fastener is provided at each of the diagonal positions along the upper edge of the control box, and fastening mounting cavities are formed at the diagonal positions inside the box base, which are isolated from the electrical control mounting cavity.

[0016] A circuit connection is required between the control box and the pump base. Furthermore, the bottom of the box base is equipped with a cable outlet adapter. One end of the cable outlet adapter extends to connect with the control board, and the other end extends to connect with the pump motor inside the pump base. The pump base is equipped with a cable outlet mounting base and a cable outlet mounting port. A sealing ring is provided between the cable outlet adapter and the cable outlet mounting port to ensure airtightness.

[0017] To further ensure installation accuracy, the bottom of the box base is provided with a raised support around the outer perimeter of the cable outlet adapter. The cable outlet mounting base is provided with a corresponding groove around the outer perimeter of the cable outlet mounting port to cooperate with the raised support. The groove is used to achieve accurate guidance and ensure the precise position of the cable outlet adapter.

[0018] Furthermore, the bottom of the housing is provided with an outwardly protruding positioning post, and the fixed support of the pump base is provided with a positioning groove that matches the positioning post. This multi-point positioning method prevents the installation direction from swinging and ensures stability.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0021] (1) In this utility model, the heat insulation board structure is eliminated, which effectively reduces the production cost. By setting the insulation board, the electrical control installation cavity and the fastening installation cavity are made independent of each other. Even if a small amount of condensate is generated in the fastening installation cavity, the condensate will not seep into the electrical control installation cavity, thereby effectively improving the anti-condensation effect of the electrical control installation cavity and avoiding adverse effects on the electrical control board.

[0022] (2) In this utility model, the fixed support feet and fixed support are used to increase the relative space distance between the control box and the pump base. The gap channel with a certain height not only effectively reduces the contact area and heat transfer, but also forms a ventilation and heat dissipation channel to accelerate heat dissipation. Even if a small amount of condensate is generated on the surface of the pump base, it can be discharged directly through the gap channel. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the water pump in the embodiment;

[0024] Figure 2 This is a schematic diagram of the water pump structure after the cover is removed in the embodiment;

[0025] Figure 3 This is a schematic diagram of the pump base in the embodiment;

[0026] Figure 4 This is a cross-sectional view of the pump base and housing in the embodiment;

[0027] Figure 5 for Figure 4 A magnified schematic diagram of the partial structure at point A in the middle;

[0028] Figure 6 This is a cross-sectional view of the control box in the embodiment;

[0029] Figure 7 for Figure 6 A magnified schematic diagram of the local structure at point B;

[0030] Figure 8 This is a schematic diagram of the box base structure in the embodiment;

[0031] Figure 9 This is a schematic diagram of the box base structure after removing the top seal in the embodiment;

[0032] Figure 10 This is a schematic diagram of the bottom surface structure of the box base in the embodiment.

[0033] Explanation of the labels in the diagram:

[0034] 110. Box base; 111. Isolation plate; 112. Fixed support leg; 113. Seal; 114. Electrical control mounting cavity; 115. Fastening mounting cavity; 116. Protruding support leg; 117. Positioning post; 118. Drainage groove;

[0035] 120. Box lid;

[0036] 130. Electrical control board; 131. Outgoing cable adapter;

[0037] 200. Pump base; 201. Fixed support; 202. Cable outlet mounting port; 203. Cable outlet mounting base; 204. Sealing ring;

[0038] 300. Fasteners. Detailed Implementation

[0039] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0040] In the description of this utility model, 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 utility model 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 utility model.

[0041] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. The terms "first," "second," "third," and "fourth" should also be interpreted broadly, merely distinguishing feature names and not indicating a specific sequential relationship. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] The present invention will be further described below with reference to the embodiments.

[0043] Example

[0044] Combination Figures 1-10 As shown, a connection structure between a water pump control box and a base in this embodiment includes a control box. The control box base 110 has an electrical control mounting cavity 114 for mounting an electrical control board 130. The base 110 is also provided with an isolation plate 111, which divides the inner cavity of the base 110 into a non-communicating electrical control mounting cavity 114 and a fastening mounting cavity 115. The fastening mounting cavity 115 is provided with a fastener 300, which extends from the fastening mounting cavity 115. The bottom end of the fastener 300 protrudes from the bottom wall of the base 110 and is configured to be fixedly connected to the pump base 200 to fix the control box on the pump base 200.

[0045] In practice, fastener 300 can specifically be fastening bolts, which are used to securely install the control box to the pump base 200. This is convenient to operate. This design eliminates the heat insulation plate structure, effectively reducing production costs. Furthermore, by setting up the insulation plate 111, this design makes the electrical control mounting cavity 114 and the fastening mounting cavity 115 independent of each other. As a fixed contact part with the pump base 200, it is difficult to avoid some heat transfer with fastener 300. However, due to the independent isolation of the electrical control mounting cavity 114, even if a small amount of condensation is generated in the fastening mounting cavity 115 due to the fastener 300, the condensation will not seep into the electrical control mounting cavity 114, thereby effectively improving the anti-condensation effect of the electrical control mounting cavity 114 and avoiding adverse effects on the electrical control board 130.

[0046] To further reduce heat transfer between the pump base 200 and the control box, thereby reducing condensate generation, more preferably, the bottom of the box base 110 is provided with outwardly protruding fixed feet 112, and the pump base 200 is provided with corresponding fixed supports 201 that are adapted to the fixed feet 112 and protrude outwardly. Positioning and installation are achieved by the contact between the fixed feet 112 and the fixed supports 201. At least one fastener 300 protrudes from the fixed feet 112 and is fixedly connected to the fixed supports 201. Since both the fixed feet 112 and the fixed supports 201 are outwardly protruding... The design has a certain height, so after the two come into contact, there is a certain height of suspended gap channel between the bottom wall of the box base 110 and the surface of the pump base 200. This increases the relative space distance between the two, which not only effectively reduces the contact area between the box base 110 and the pump base 200 and reduces heat transfer, but the gap channel also forms a ventilation and heat dissipation channel, which is conducive to accelerating heat dissipation. Even if a small amount of condensate is generated on the surface of the pump base 200, it can be discharged directly through the gap channel, preventing the low-temperature condensate generated by the pump base 200 from being transferred to the box base 110.

[0047] Furthermore, a sealing element 113, which can be made of rubber, is provided around the mating surfaces of the control box base 110 and the cover 120 to ensure the sealing between the base 110 and the cover 120 and prevent external moisture from entering. The sealing element 113 also covers the top surface of the fastening mounting cavity 115, so that the top of the fastening mounting cavity 115 is not connected to the electrical control mounting cavity 114. In practice, the height of the insulating plate 111 is flush with the height of the box base 110. When the box cover 120 is a flat structure, the sealing element 113 is directly pressed to prevent the top of the fastening mounting cavity 115 and the electrical control mounting cavity 114 from communicating. When the box cover 120 also has an inner cavity, an upper insulating plate is also provided in the corresponding inner cavity of the box cover 120. This upper insulating plate is aligned and pressed with the insulating plate 111 in the box base 110, and sealed by the sealing element 113, effectively isolating the fastening mounting cavity 115 and the electrical control mounting cavity 114, preventing them from communicating with each other and preventing moisture from seeping in. The box cover 120 can also adopt other structural forms, but after the box cover 120 and the box base 110 are installed together, the mutual isolation between the fastening mounting cavity 115 and the electrical control mounting cavity 114 can still be guaranteed.

[0048] Furthermore, for ease of installation and operation, such as Figure 1 As shown, the preferred fastener 300 passes through the cover 120 and extends downward within the fastening mounting cavity 115, in conjunction with... Figure 8 The seal 113 is correspondingly wrapped around the outer periphery of the fastener 300. The fastener 300 is directly inserted through the outside of the cover 120 for easy installation. Figure 7As shown, a stepped groove can be set on the cover 120. The fastener 300 is a bolt that goes down and presses the top of the cover 120. The bottom has a threaded section. The fixed support 201 of the pump base 200 has a corresponding threaded hole. After the fastener 300 passes through the cover 110, it is threadedly fastened to the fixed support 201. The threaded hole of the fixed support 201 is a blind hole that does not communicate with the inner cavity of the pump base 200, which ensures the sealing of the pump base 200, prevents external air from entering, and reduces heat transfer between the pump base 200 and the cover 110.

[0049] Combination Figure 10 As shown, the fixed support 112 at the bottom of the box base 110 is a U-shaped support. The fastener 300 passes through the internal opening of the U-shaped support. The hollow U-shaped support not only provides stability in its fit with the fixed support 201, but also further reduces the contact area between the two, thus reducing heat transfer. In addition, a drainage groove 118 is provided on the wall surface of the U-shaped support facing the opening end. The drainage groove 118 is provided through so that even if a small amount of condensation is generated at the bottom of the box base 110, it can be discharged through the bottom surface or the drainage groove 118, and no water will accumulate inside the support. Furthermore, the drainage groove 118 and the opening of the U-shaped support are distributed opposite to each other, forming a drainage channel with openings at both ends, which will not cause obstruction.

[0050] To ensure the installation stability of the control box and pump base 200, and to minimize the number of fasteners 300 and the contact area, further, in combination with Figure 1 As shown, a fastener 300 is provided at each diagonal position along the upper edge of the control box. Inside the box base 110, fastening mounting cavities 115 are formed at corresponding diagonal positions, isolated from the electrical control mounting cavity 114. When the control box has a rectangular structure, the diagonal positions refer to any diagonal position of the four corners. When the control box has a circular structure, the diagonal positions can be considered as positions close to the two ends in the radial direction, etc., intended to achieve stable installation by using two fasteners 300 at both ends in the longer direction.

[0051] In practice, the control box and the pump motor inside the pump base 200 still require a circuit connection. Specifically, the control board 130 needs to be connected to the pump motor inside the pump base 200. Therefore, the bottom of the box base 110 is also provided with a cable adapter 131. One end of the cable adapter 131 extends into the box base 110 and connects to the control board 130, and the other end extends into the pump base 200 and connects to the pump motor. Correspondingly, combined with Figures 3-5As shown, the pump base 200 is provided with a cable outlet mounting base 203, and the cable outlet mounting base 203 has a cable outlet mounting port 202. The cable outlet adapter 131 is inserted into the cable outlet mounting port 202 and connected to the pump motor. In this embodiment, a sealing ring 204 is provided around the cable outlet adapter 131 and the cable outlet mounting port 202 to effectively prevent external air from entering the pump base 200. In conjunction with this, a raised support foot 116 is also provided around the bottom of the housing 110 around the outer periphery of the cable outlet adapter 131, and the cable outlet mounting base 203 is provided with a corresponding groove around the outer periphery of the cable outlet mounting port 202 to cooperate with the raised support foot 116. When the cable adapter 131 is inserted, the raised support 116 is inserted into the groove for guidance to ensure the accuracy of the insertion position. The raised support 116 and the groove can also be used to achieve double sealing of the outer layer, such as a sealing ring in the groove, and the raised support 116 pressing down on the sealing ring.

[0052] In practice, the bottom of the box base 110 is further provided with an outwardly protruding positioning post 117. The fixed support 201 of the pump base 200 is correspondingly provided with a positioning groove that mates with the positioning post 117. When the control box is installed with the pump base 200, the positioning post 117 mates with the positioning groove for positioning. In addition to the single-point positioning using the protruding support 116, multi-point positioning using the positioning post 117 can effectively ensure positioning accuracy, avoid the swaying of single-point positioning, and fully ensure the accurate insertion of the cable adapter 131. Specifically, as... Figure 10 As shown, two sets of positioning posts 117 can be set, and the two sets of positioning posts 117 and the protruding support feet 116 form a triangular distribution, which makes the stability higher.

[0053] This embodiment effectively isolates and protects the electrical control board 130 by isolating the internal chamber of the control box, preventing water from entering and affecting electrical control safety. It also uses fixed support feet 112 to form a multi-point fastening installation with the pump base 200, which effectively reduces the contact area between the control box and the pump base 200, promotes ventilation and heat dissipation, reduces condensation, and enhances the sealing control of the control box and the pump base 200 respectively, effectively improving the anti-condensation performance of the control box and ensuring the safety and stability of electrical control.

[0054] The scope of protection of this utility model is defined only by the claims. Thanks to the teachings of this utility model, those skilled in the art will readily recognize that alternative structures to the disclosed structure can be used as feasible alternative implementations, and that the disclosed implementations can be combined to produce new implementations, which also fall within the scope of the appended claims.

Claims

1. A connection structure between a water pump control box and a base, comprising a control box, wherein the base (110) of the control box has an electrical control mounting cavity (114) for mounting an electrical control board (130); Its features are: The housing (110) is also provided with an isolation plate (111), which divides the inner cavity of the housing (110) into an electrical control mounting cavity (114) and a fastening mounting cavity (115) that are not connected to each other. The fastening mounting cavity (115) is provided with a fastener (300), which extends in the fastening mounting cavity (115) and passes through the housing (110). The end of the fastener (300) is configured to be fixedly connected to the pump base (200) to fix the control box on the pump base (200).

2. The connecting structure of a water pump control box and a base according to claim 1, characterized in that: It also includes a pump base (200), and the bottom of the box base (110) is provided with outward protruding fixed feet (112). The pump base (200) is provided with a fixed support (201) that is adapted to the fixed feet (112) and protrudes outward. At least one fastener (300) passes through the fixed feet (112) and is fixedly connected to the fixed support (201), so that a gap channel is formed between the bottom wall of the box base (110) and the surface of the pump base (200).

3. The connecting structure of a water pump control box and a base according to claim 1, characterized in that: A sealing element (113) is provided around the control box base (110) and the box cover ZW0126016168 (120). The sealing element (113) covers the top surface of the fastening mounting cavity (115) so that the top of the fastening mounting cavity (115) is not connected to the electrical control mounting cavity (114).

4. The connecting structure of a water pump control box and a base according to claim 3, characterized in that: The fastener (300) passes through the cover (120) and extends downward into the fastening mounting cavity (115), and the seal (113) surrounds the outer periphery of the fastener (300).

5. The connecting structure of a water pump control box and a base according to claim 2, characterized in that: The fastener (300) is a fastening bolt. The fixed support (201) of the pump base (200) is provided with a corresponding threaded hole. After the fastener (300) passes through the box base (110), it is threadedly fastened to the fixed support (201). The threaded hole of the fixed support (201) is a blind hole that does not communicate with the inner cavity of the pump base (200).

6. The connecting structure of a water pump control box and a base according to claim 2, characterized in that: The fixed support (112) at the bottom of the box base (110) is a U-shaped support. The fastener (300) passes through the internal opening of the U-shaped support, and a drainage groove (118) is provided on the wall surface of the U-shaped support facing the opening end.

7. The connecting structure of a water pump control box and a base according to claim 1, characterized in that: Each of the two sides of the control box is provided with a fastener (300) at a diagonal position. The box base (110) has fastening mounting cavities (115) at the diagonal positions, which are isolated from the electrical control mounting cavity (114).

8. The connecting structure of a water pump control box and a base according to claim 2, characterized in that: The bottom of the box base (110) is also provided with a cable outlet adapter (131). One end of the cable outlet adapter (131) extends to connect with the electronic control board (130), and the other end extends to connect with the pump motor inside the pump base (200). The pump base (200) is provided with a cable outlet mounting seat (203) and a cable outlet mounting port (202). A sealing ring (204) is provided around the cable outlet adapter (131) and the cable outlet mounting port (202).

9. The connecting structure of a water pump control box and a base according to claim 8, characterized in that: The bottom of the box base (110) is surrounded by a raised support foot (116) around the outer periphery of the cable outlet adapter (131), and the cable outlet mounting base (203) is surrounded by a groove that matches the raised support foot (116) around the outer periphery of the cable outlet mounting port (202).

10. The connecting structure of a water pump control box and a base according to claim 8 or 9, characterized in that: The bottom of the box base (110) is also provided with an outwardly protruding positioning post (117), and the fixed support (201) of the pump base (200) is provided with a positioning groove that cooperates with the positioning post (117).

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