Plastic package fan and gas water heating equipment

Abstract

The utility model belongs to the technical field of fans, and discloses a plastic package fan and gas water heating equipment. The plastic package fan comprises a fan shell, an adapter plate, a cover plate and a driver. The fan shell is provided with a containing cavity; the adapter plate comprises a circuit board, a socket and a contact pin, the circuit board is arranged in the containing cavity, the socket and the contact pin are both arranged on the circuit board and electrically connected with the circuit board, and the contact pin penetrates through the cavity bottom of the containing cavity and is electrically connected with a winding of the fan shell; the cover plate is provided with a receding opening, the cover plate covers the containing cavity in a sealing mode, the socket is arranged in the receding opening in a penetrating mode, and the socket and the receding opening are in tight fit; the driver is arranged outside the fan shell and provided with a plug, and the plug can be connected with the socket in an inserted mode so that the driver can be electrically connected with the winding of the fan shell. According to the plastic package fan, water vapor can be effectively prevented from entering the containing cavity, the phenomenon that the service life of the adapter plate is affected due to the fact that the adapter plate is affected with damp is avoided, and the reliability of the plastic package fan is improved.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to a plastic-sealed fan and a gas-fired hot water equipment. Background Technology

[0002] The driver of a plastic sealant blower is responsible for connecting to an external power source, receiving and feeding back control signals, and adjusting the blower speed according to a specific program.

[0003] Existing encapsulated blower drivers are typically electrically connected to the blower windings via wires. After the wires are soldered to the winding leads, they are connected to the driver through pre-drilled outlet holes in the blower housing. Due to the flexibility and deformability of the wires, a large gap exists between the wires and the outlet holes, allowing moisture to easily enter the blower and cause it to become damp, leading to malfunctions and low reliability. If glue is used to seal the gap between the wires and the outlet holes, it makes subsequent circuit board inspection inconvenient, thus indicating room for improvement. Utility Model Content

[0004] One of the problems to be solved by this utility model is to provide a plastic sealing blower that can solve the problem of plastic sealing blowers being easily affected by moisture in the prior art, reduce the failure rate of plastic sealing blowers, and improve reliability.

[0005] One of the problems this utility model aims to solve is to provide a gas-fired water heater that can address the issue of moisture absorption in existing sealed blowers, thereby improving the reliability of the gas-fired water heater and enhancing the user experience.

[0006] The first problem mentioned above is solved by the following technical solution:

[0007] A sealing blower includes a blower housing, wherein windings are disposed within the blower housing, and the blower housing is provided with a receiving cavity; the sealing blower further includes:

[0008] The adapter board includes a circuit board, a socket electrically connected to the circuit board, and pins electrically connected to the circuit board. The circuit board is disposed in the receiving cavity, and the pins penetrate the bottom of the receiving cavity and are electrically connected to the winding.

[0009] A cover plate with a clearance opening is provided to seal the receiving cavity, and the socket is inserted into and tightly fitted with the clearance opening;

[0010] The driver is provided with a plug that is inserted into the socket.

[0011] The plastic sealing blower described in this utility model has the following advantages compared with the prior art:

[0012] This encapsulated blower uses an adapter plate placed inside a housing cavity, which is then sealed with a cover plate. The socket and the cover plate's clearance opening are inserted and tightly fitted. Compared to the winding connected to the driver via wires, this method effectively restricts moisture from entering the housing cavity without the need for adhesive injection, thus improving the blower's sealing performance. Furthermore, the circuit board is connected to the driver's plug via the socket, allowing for easy unplugging and maintenance of the circuit board.

[0013] In one embodiment, a sealing ring is further included, which is fitted onto the socket and sandwiched between the cover plate and the circuit board.

[0014] In one embodiment, the end face of the cover plate facing the receiving cavity has a first annular boss, the first annular boss is arranged around the clearance opening, and the sealing ring is sandwiched between the first annular boss and the circuit board.

[0015] In one embodiment, a stepped column is provided at the bottom of the receiving cavity;

[0016] The circuit board has a first through hole, the stepped post passes through the first through hole, and the circuit board is supported on the stepped surface of the stepped post.

[0017] In one embodiment, the end face of the stepped column facing away from the bottom of the receiving cavity is provided with a threaded hole, the cover plate is provided with a second through hole, and the fastening screw passes through the second through hole and is screwed into the threaded hole.

[0018] In one embodiment, the end face of the cover plate facing the receiving cavity is provided with a second annular boss, the second annular boss is arranged around the second through hole, and the second annular boss abuts against the circuit board.

[0019] In one embodiment, the end face of the cover plate facing the receiving cavity is provided with a third annular boss, the third annular boss is embedded in the receiving cavity, and the outer peripheral surface of the third annular boss is in contact with the inner peripheral surface of the receiving cavity.

[0020] In one embodiment, the socket includes pins and a connecting plate, the pins being electrically connected to corresponding wiring ports of the circuit board, the connecting plate being integrally formed with the substrate of the circuit board, and the connecting plate being inserted into and tightly fitted with the clearance port.

[0021] In one embodiment, the circuit board is provided with a socket, and the pin passes through the socket and is soldered to the circuit board.

[0022] The aforementioned second technical problem is solved by the following technical solution:

[0023] A gas-fired water heater includes a housing and a plastic-sealed fan as described in any of the above embodiments, wherein the plastic-sealed fan is disposed inside the housing, and the driver is disposed outside the fan housing and connected to the housing.

[0024] The gas-fired water heater provided by this utility model has the following advantages compared with the prior art:

[0025] This gas-fired water heater improves the heat dissipation efficiency of the driver by placing it outside the fan housing of the sealed blower. Compared to a structure where the driver is placed inside the fan housing, this avoids excessively high temperatures inside the fan housing and improves reliability. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the sealing blower provided in this embodiment of the utility model;

[0027] Figure 2 yes Figure 1 Enlarged view of the structure at point A in the middle;

[0028] Figure 3 This is a schematic diagram of the structure of the adapter plate involved in the embodiment of this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the cover plate involved in the embodiment of this utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the plastic sealing fan for removing the cover plate provided in this embodiment of the utility model.

[0031] In the picture:

[0032] 1. Fan casing; 11. Receiving cavity; 12. Winding; 13. Stepped column;

[0033] 2. Adapter board; 21. Circuit board; 211. First through hole; 22. Socket; 221. Pin; 222. Connecting plate; 23. Insert pin; 24. Sealing ring;

[0034] 3. Cover plate; 31. Clearance opening; 32. First annular boss; 33. Second through hole; 34. Second annular boss; 35. Third annular boss;

[0035] 4. Plug;

[0036] 5. Tighten the screws. Detailed Implementation

[0037] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0038] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In the description of this utility model, unless otherwise expressly 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.

[0040] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0041] like Figures 1-5 As shown, this utility model embodiment provides a plastic-sealed fan, which includes a fan housing 1, an adapter plate 2, a cover plate 3, and a driver. The fan housing 1 has a receiving cavity 11; the adapter plate 2 includes a circuit board 21, a socket 22, and a pin 23. The circuit board 21 is disposed within the receiving cavity 11, and the socket 22 and pin 23 are both disposed on and electrically connected to the circuit board 21. The pin 23 penetrates the bottom of the receiving cavity 11 and is electrically connected to the winding 12 of the fan housing 1; the cover plate 3 has a clearance opening 31, which covers the receiving cavity 11. The socket 22 passes through the clearance opening 31, and the socket 22 and the clearance opening 31 are configured for a tight fit, specifically an interference fit or a transition fit; the driver is disposed outside the fan housing 1 and has a plug 4 that can be plugged into the socket 22 to achieve electrical connection between the driver and the winding 12 of the fan housing 1.

[0042] The encapsulated blower uses an adapter plate 2, which is placed inside the receiving cavity 11 and then sealed by a cover plate 3. Because the socket 22 and the clearance opening 31 of the cover plate 3 are designed for a tight fit, compared to the method of connecting the winding to the driver via wires, moisture can be effectively restricted from entering the receiving cavity 11 without the need for adhesive injection. This prevents the adapter plate 2 from becoming damp and affecting its service life, thus improving the sealing performance of the encapsulated blower. Furthermore, the circuit board 21 is connected to the driver's plug 4 via the socket 22, and the plug 4 can be disconnected at any time for easy maintenance of the circuit board 21. Additionally, the adapter plate 2, serving only as an electrical connector, features a simple structure, small size, and low heat generation. The driver can be connected to the socket 22 via the plug 4, allowing the driver to be installed outside the blower housing 1, resulting in high heat dissipation efficiency.

[0043] Optionally, such as Figure 2 As shown, the plastic sealant also includes a sealing ring 24. The sealing ring 24 is installed on the socket 22. When the cover plate 3 covers the receiving cavity 11, the sealing ring 24 is sandwiched between the cover plate 3 and the circuit board 21. By setting the sealing ring 24 on the outside of the socket 22, the sealing performance between the socket 22 and the clearance opening 31 can be improved.

[0044] To further improve the sealing performance of the sealing ring 24, a first annular protrusion 32 is provided on the end face of the cover plate 3 facing the receiving cavity 11 around the relief opening 31. When the cover plate 3 covers the receiving cavity 11, the first annular protrusion 32 can press against the sealing ring 24 to ensure that the sealing ring 24 can be effectively squeezed and the sealing performance is guaranteed.

[0045] Optionally, such as Figures 3-5 As shown, a stepped post 13 is provided at the bottom of the cavity 11; the circuit board 21 is provided with a first through hole 211. When the circuit board 21 is placed in the cavity 11, the stepped post 13 passes through the first through hole 211, and the circuit board 21 is supported on the stepped surface of the stepped post 13. After the cover plate 3 covers the cavity 11, it can prevent the circuit board 21 from falling out of the stepped post 13. This structure realizes the limited installation of the circuit board 21. The structure is simple and easy to install.

[0046] In order to connect the cover plate 3 and the fan housing 1, the end face of the stepped column 13 facing away from the bottom of the cavity 11 is provided with a threaded hole, and the cover plate 3 is provided with a second through hole 33. The fastening screw 5 passes through the second through hole 33 and is screwed into the threaded hole. This structure makes the installation of the cover plate 3 more convenient.

[0047] Optionally, the end face of the cover plate 3 facing the receiving cavity 11 is provided with a second annular boss 34 on the periphery of the second through hole 33. When the cover plate 3 covers the receiving cavity 11, the stepped post 13 passes through the first through hole 211 and the second annular boss 34 at the same time. The second annular boss 34 presses against the circuit board 21 so that the cover plate 3 is firmly installed and the circuit board 21 is prevented from shaking.

[0048] Optionally, the end face of the cover plate 3 facing the receiving cavity 11 is provided with a third annular boss 35. When the cover plate 3 covers the receiving cavity 11, the third annular boss 35 can be embedded in the receiving cavity 11, that is, the outer peripheral surface of the third annular boss 35 and the inner peripheral surface of the receiving cavity 11 are tightly fitted to further improve the sealing performance of the cover plate 3.

[0049] In this embodiment, the receiving cavity 11 is annular; the circuit board 21 is configured as a fan-shaped ring that matches the annular ring. By configuring the circuit board 21 as a fan-shaped ring, when the circuit board 21 is installed in the receiving cavity 11, it can be limited by a single stepped post 13, which is convenient for installation and has a simple processing technology.

[0050] Optionally, the socket 22 includes pins 221 and a connecting plate 222 surrounding the pins 221. The pins 221 are electrically connected to the corresponding wiring ports of the circuit board 21. The connecting plate 222 is integrally formed with the substrate of the circuit board 21, and the connecting plate 222 is inserted into and tightly fitted with the clearance opening 31. In this structure, the connecting plate 222 protects the pins 221, and the plug 4 can be confined within the connecting plate 222 to ensure the reliability of the insertion.

[0051] Optionally, the circuit board 21 is provided with a socket, and the pin 23 passes through the socket and is soldered to the circuit board 21 so that the pin 23 is firmly connected to the circuit board 21.

[0052] In this embodiment, there are three sockets, and each socket is fitted with a pin 23. The three pins 23 enable the plastic sealer to be electrically connected to a three-phase power supply.

[0053] This utility model also provides a gas-fired water heater, which includes a housing, a burner and the aforementioned sealing fan. The sealing fan and the burner are disposed inside the housing. The sealing fan is used to deliver air to the burner to achieve combustion of gas. The driver is disposed outside the fan housing 1 and connected to the housing.

[0054] By placing the driver outside the fan housing 1 of the sealed blower, the heat dissipation efficiency of the driver can be improved. Compared with the structure in which the driver is placed inside the fan housing 1, the temperature inside the fan housing 1 is not too high, thus improving reliability.

[0055] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A plastic encapsulated fan comprising a fan housing (1) having a winding (12) disposed therein, characterized in that, The fan shell (1) is provided with a containing cavity (11); the plastic-encapsulated fan further comprises: An adapter plate (2) comprising a circuit board (21), a socket (22) electrically connected with the circuit board (21), and a pin (23) electrically connected with the circuit board (21), the circuit board (21) is arranged in the containing cavity (11), the pin (23) penetrates the cavity bottom of the containing cavity (11) and is electrically connected with the winding (12); A cover plate (3) provided with a avoiding port (31), the cover plate (3) covers the containing cavity (11), the socket (22) is inserted into and tightly fitted with the avoiding port (31); A driver provided with a plug (4), the plug (4) is inserted into the socket (22).

2. The plastic-encased fan according to claim 1, characterized in that Further comprising a sealing ring (24), the sealing ring (24) is sleeved on the socket (22), and the sealing ring (24) is clamped between the cover plate (3) and the circuit board (21).

3. The plastic-encased fan according to claim 2, characterized in that The end surface of the cover plate (3) facing the containing cavity (11) is provided with a first annular boss (32), the first annular boss (32) is arranged around the avoiding port (31), and the sealing ring (24) is clamped between the first annular boss (32) and the circuit board (21).

4. The plastic-encased fan according to claim 1, characterized in that The cavity bottom of the containing cavity (11) is provided with a stepped column (13); The circuit board (21) is provided with a first through hole (211), the stepped column (13) penetrates the first through hole (211), and the circuit board (21) is supported on the stepped surface of the stepped column (13).

5. The plastic-encased fan according to claim 4, characterized in that The end surface of the stepped column (13) away from the cavity bottom of the containing cavity (11) is provided with a threaded hole, the cover plate (3) is provided with a second through hole (33), a fastening screw (5) penetrates the second through hole (33) and is screwed into the threaded hole.

6. The plastic-encased fan according to claim 5, characterized in that The end surface of the cover plate (3) facing the containing cavity (11) is provided with a second annular boss (34), the second annular boss (34) is arranged around the second through hole (33), and the second annular boss (34) is pressed against the circuit board (21).

7. The plastic-encased fan according to any one of claims 1 to 6, characterized in that The end surface of the cover plate (3) facing the containing cavity (11) is provided with a third annular boss (35), the third annular boss (35) is embedded in the containing cavity (11), and the outer circumferential surface of the third annular boss (35) is fitted with the inner circumferential surface of the containing cavity (11).

8. The plastic-encased fan according to any one of claims 1 to 6, characterized in that The socket (22) comprises a pin (221) and a connecting plate (222), the pin (221) is electrically connected with the corresponding wiring port of the circuit board (21), the connecting plate (222) is integrally formed with the base material of the circuit board (21), and the connecting plate (222) is inserted into and tightly fitted with the avoiding port (31).

9. The plastic-encased fan according to any one of claims 1 to 6, characterized in that The circuit board (21) is provided with a jack, the pin (23) penetrates the jack and is welded with the circuit board (21).

10. Gas water heating apparatus, characterised in that, The fan shell (1) is provided with a containing cavity (11); the plastic-encapsulated fan further comprises: An adapter plate (2) comprising a circuit board (21), a socket (22) electrically connected with the circuit board (21), and a pin (23) electrically connected with the circuit board (21), the circuit board (21) is arranged in the containing cavity (11), the pin (23) penetrates the cavity bottom of the containing cavity (11) and is electrically connected with the winding (12); A cover plate (3) provided with a avoiding port (31), the cover plate (3) covers the containing cavity (11), the socket (22) is inserted into and tightly fitted with the avoiding port (31); A driver provided with a plug (4), the plug (4) is inserted into the socket (22). Further comprising a sealing ring (24), the sealing ring (24) is sleeved on the socket (22), and the sealing ring (24) is clamped between the cover plate (3) and the circuit board (21). The end surface of the cover plate (3) facing the containing cavity (11) is provided with a first annular boss (32), the first annular boss (32) is arranged around the avoiding port (31), and the sealing ring (24) is clamped between the first annular boss (32) and the circuit board (21). The cavity bottom of the containing cavity (11) is provided with a stepped column (13); The circuit board (21) is provided with a first through hole (211), the stepped column (13) penetrates the first through hole (211), and the circuit board (21) is supported on the stepped surface of the stepped column (13). The end surface of the stepped column (13) away from the cavity bottom of the containing cavity (11) is provided with a threaded hole, the cover plate (3) is provided with a second through hole (33), a fastening screw (5) penetrates the second through hole (33) and is screwed into the threaded hole. The end surface of the cover plate (3) facing the containing cavity (11) is provided with a second annular boss (34), the second annular boss (34) is arranged around the second through hole (33), and the second annular boss (34) is pressed against the circuit board (21). The end surface of the cover plate (3) facing the containing cavity (11) is provided with a third annular boss (35), the third annular boss (35) is embedded in the containing cavity (11), and the outer circumferential surface of the third annular boss (35) is fitted with the inner circumferential surface of the containing cavity (11). The socket (22) comprises a pin (221) and a connecting plate (222), the pin (221) is electrically connected with the corresponding wiring port of the circuit board (21), the connecting plate (222) is integrally formed with the base material of the circuit board (21), and the connecting plate (222) is inserted into and tightly fitted with the avoiding port (31). The circuit board (21) is provided with a jack, the pin (23) penetrates the jack and is welded with the circuit board (21). Including a box body and the plastic-encapsulated fan of any one of claims 1-9, the plastic-encapsulated fan is arranged in the box body, and the driver is arranged outside the fan shell (1) and connected with the box body.

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