Water pump electric box and water pump

Abstract

The utility model relates to the technical field of water pump electric boxes, and particularly provides a water pump electric box and a water pump. The internal circuit comprises a bottom plate and a panel which are connected with each other; the bottom plate comprises a power supply module which is connected with the first main control chip and other modules on the bottom plate; the switching value input module is connected with a first input port of the first main control chip; the input end of the relay driving module is connected with the first output port of the first main control chip, and the output end of the relay driving module is connected with the relay module; the current transformer module is connected with a second input port of the first main control chip; the RS485 communication module is connected with a communication port of the first main control chip; the panel comprises a second main control chip; the key module is connected with the first input port of the second main control chip; the input end of the nixie tube driving module is connected with the output port of the second main control chip, and the output end of the nixie tube driving module is connected with the nixie tube module. The RS485 communication circuit is small in size, and has a protection function and an RS485 communication function.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump electrical boxes, in particular to a water pump electrical box and a water pump. Background Art

[0002] A pump electrical box is an electrical control box used with a water pump. It is primarily responsible for providing power to the pump and enabling its start, stop, and control. It is a crucial component of the pump system, ensuring the safe and efficient operation of the pump.

[0003] Existing water pump electrical boxes are typically waterproof plastic or metal boxes, housing control components such as circuit breakers, contactors, and wiring terminals. The large size of the contactors makes the water pump electrical box bulky, making it difficult to install. For example, a 2.2kW water pump is relatively small and often installed in a relatively confined space, requiring a smaller electrical box. Furthermore, existing water pump electrical boxes offer limited functionality and fail to meet user demands for efficiency, convenience, safety, and stability. Utility Model Content

[0004] To this end, the technical problem to be solved by the present invention is to overcome the problems of large size and single function of the water pump electrical box in the prior art, and provide a water pump electrical box and a water pump, which are small in size and have water pump overload, water shortage, phase loss protection functions and RS485 communication functions.

[0005] In the first aspect, in order to solve the above technical problems, the present invention provides a water pump electrical box, comprising a housing and an internal circuit; the internal circuit comprises:

[0006] A baseboard, comprising a power module, a switch input module, a current transformer module, an RS485 communication module, a first main control chip, a relay driver module, and a relay module; the power module is connected to the first main control chip and other modules on the baseboard; the switch input module is connected to the first input port of the first main control chip, the input end of the relay driver module is connected to the first output port of the first main control chip, the output end of the relay driver module is connected to the relay module, the current transformer module is connected to the second input port of the first main control chip, and the RS485 communication module is connected to the communication port of the first main control chip;

[0007] A panel is connected to the base plate; the panel includes a key module, a second main control chip, a digital tube driver module and a digital tube module; the key module is connected to the first input port of the second main control chip, the input end of the digital tube driver module is connected to the output port of the second main control chip, and the output end of the digital tube driver module is connected to the digital tube module.

[0008] In one embodiment of the present invention, the base plate further includes a buzzer module, and the buzzer module is connected to the second output port of the first main control chip.

[0009] In one embodiment of the present invention, the buzzer module includes a buzzer and a capacitor. The buzzer is connected to the second output port of the first main control chip, and the buzzer is also grounded through the capacitor.

[0010] In one embodiment of the present invention, the current transformer module includes a current transformer, and the current transformer is a direct-insertion welding current transformer.

[0011] In one embodiment of the present invention, the bottom plate and the panel are connected via a flexible wire or a flexible circuit board.

[0012] In one embodiment of the present invention, both the first main control chip and the second main control chip are STM32F030K6T6 chips.

[0013] In one embodiment of the present invention, the baseboard further includes a first program burning port, and the first program burning port is connected to the third input port of the first main control chip.

[0014] In one embodiment of the present invention, the panel further includes a second program burning port, and the second program burning port is connected to the second input port of the second main control chip.

[0015] Secondly, in order to solve the above technical problems, the utility model also provides a water pump, including a water pump body and the water pump electrical box; the water pump body is connected to the water pump electrical box.

[0016] In one embodiment of the present invention, the water pump body includes a main control circuit; the main control circuit is connected to the relay module of the water pump electrical box.

[0017] The above technical solution of the present invention has at least the following advantages compared with the prior art:

[0018] The water pump electrical box and water pump described in the utility model are relatively small in size and can realize protection function when the water pump is overloaded, lacks water, or lacks phase. They have RS485 communication function and can realize reading of the operating status of the water pump and remote power on and off control. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0020] Figure 1 This is a module diagram of the internal circuit of a water pump electric box in a preferred embodiment of the utility model;

[0021] Figure 2 yes Figure 1 Schematic diagram of the power module;

[0022] Figure 3 yes Figure 1 The first main control chip is a schematic diagram of the STM32F030K6T6 chip;

[0023] Figure 4 It is a schematic diagram of the buzzer module in the preferred embodiment of the present utility model. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0025] In this application, unless otherwise specified or limited, the term "connection" should be understood in a broad sense, and can refer to mechanical or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0026] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0027] Existing pump electrical boxes primarily house control components such as circuit breakers, contactors, and wiring terminals. The large size of the contactors makes the pump electrical box bulky, making installation difficult. For example, a 2.2kW pump is inherently small and often installed in a relatively confined space, requiring a smaller electrical box. Furthermore, existing pump electrical boxes offer limited functionality and fail to meet user demands for efficiency, convenience, safety, and stability.

[0028] To this end, an embodiment of the present application provides a water pump electrical box and a water pump.

[0029] Example 1

[0030] This embodiment provides a water pump electrical box, including a housing and an internal circuit; please refer to Figure 1 As shown, the internal circuit includes:

[0031] Baseboard S1, including a power module, a switch input module, a current transformer module, an RS485 communication module, a first main control chip, a relay driver module and a relay module; the power module is connected to the first main control chip and other modules on the baseboard; the switch input module is connected to the first input port of the first main control chip, the input end of the relay driver module is connected to the first output port of the first main control chip, the output end of the relay driver module is connected to the relay module, the current transformer module is connected to the second input port of the first main control chip, and the RS485 communication module is connected to the communication port of the first main control chip;

[0032] Panel S2 is connected to the base plate S1; the base plate S2 includes a key module, a second main control chip, a digital tube driver module and a digital tube module; the key module is connected to the first input port of the second main control chip, the input end of the digital tube driver module is connected to the output port of the second main control chip, and the output end of the digital tube driver module is connected to the digital tube module.

[0033] The water pump electrical box provided in this embodiment (1) does not require a contactor, is relatively small, and can be directly installed on the water pump; (2) is equipped with a current transformer for detection, which can realize a protection function when the water pump is overloaded, lacks water, or is missing a phase; (3) is equipped with an RS485 communication module, which has a communication function and can realize the reading of the operating status of the water pump and remote power on / off control.

[0034] Next, a water pump electric box provided in this embodiment is further introduced:

[0035] 1. Circuit structure

[0036] 1. Bottom plate S1

[0037] Optionally, the power module includes a transformer T1, a rectifier chip U1, a first filter capacitor E1, a first capacitor C1, a voltage stabilizing chip U2, a second capacitor C2 and a second filter capacitor E2.

[0038] Specifically, the input end of the transformer T1 is connected to two phases L2 and L3 of the external three-phase power supply L1, L2, and L3, the output end of the transformer T1 is connected to the input end of the rectifier chip U1, the positive output end of the rectifier chip U1 is connected to the input end of the voltage regulator chip U2, the negative output end of the rectifier chip U1 is connected to the ground end of the voltage regulator chip U2, and the ground end of the voltage regulator chip U2 is grounded; the positive end of the first filter capacitor E1 is connected to the positive output end of the rectifier chip U1, and the negative end of the first filter capacitor E1 is grounded; the first capacitor C1 is connected between the input end and the ground end of the voltage regulator chip U2; the second capacitor C2 is connected between the output end and the ground end of the voltage regulator chip U2; the positive end of the second filter capacitor E2 is connected to the output end of the voltage regulator chip U2, and the negative end of the second filter capacitor E2 is connected to the ground end of the voltage regulator chip U2.

[0039] Specifically, the first filter capacitor E1 is connected in parallel with the first capacitor C1, and the second filter capacitor E2 is connected in parallel with the second capacitor C2, which can smooth voltage fluctuations and improve circuit stability and anti-interference capability.

[0040] Preferably, the model of the rectifier chip U1 is MB10S, and the model of the voltage regulator chip U2 is MD7602D33.

[0041] Optionally, the transformer T1 steps down 380V AC power to 9V AC power; the rectifier chip U1 rectifies the 9V AC power to 12V DC power, and its positive output end outputs 12V voltage; the voltage regulator chip U2 stabilizes the 12V DC power to 3.3V DC power, and its output end outputs 3.3V voltage.

[0042] Preferably, the first main control chip is an STM32F030K6T6 chip, please refer to Figure 3 shown.

[0043] Optionally, the current transformer module includes a current transformer, and the current transformer is a direct-plug welding current transformer; the use of the direct-plug welding current transformer can further reduce the volume of the water pump electrical box described in this embodiment.

[0044] Furthermore, the current transformer module uses three transformers of model ZEMCT31.

[0045] Preferably, the base plate S1 further includes a buzzer module, and the buzzer module is connected to the second output port of the first main control chip.

[0046] Optionally, the buzzer module includes a buzzer and a capacitor, the buzzer is connected to the second output port of the first main control chip, and the buzzer is also grounded through the capacitor.

[0047] For example, please refer to Figure 4 As shown, the buzzer module includes a buzzer B1 and a capacitor C3. The positive terminal BELL of the buzzer B1 is connected to the second output port AD3 / PA3 of the first main control chip STM32F030K6T6. The buzzer B1 is also grounded through the capacitor C3.

[0048] Optionally, the baseboard S1 further includes a first program burning port, which is connected to the third input port of the first main control chip; the built-in program of the first main control chip can be modified and edited through the first program burning port.

[0049] 2. Panel S2 Specifically, the model of the second main control chip is the same as that of the first main control chip to facilitate program editing and mass production.

[0050] Preferably, the second main control chip is an STM32F030K6T6 chip.

[0051] Optionally, the bottom plate S1 is connected to the panel S2 via a flexible wire or a flexible circuit board; this connection method is a flexible wire connection, which can prevent desoldering due to vibration.

[0052] Specifically, data is transmitted between the first main control chip and the second main control chip.

[0053] Specifically, the power module on the base plate S1 supplies power to the second main control chip and other modules on the panel S2.

[0054] Optionally, the panel S2 further includes a second program burning port, which is connected to a second input port of the second main control chip; the built-in program of the second main control chip can be modified and edited through the second program burning port.

[0055] 2. Working Principle

[0056] Illustratively, the water pump electrical box described in this embodiment is connected to a water pump.

[0057] Specifically, the water pump electrical box is powered on, the switch input module detects a power-on signal and inputs it into the first main control chip, the first main control chip outputs a signal to the relay drive module, the relay drive module then outputs a signal to the relay module, the relay module is attracted, and the water pump is powered on and operates;

[0058] Furthermore, the current transformer module collects the operating current of the water pump and inputs the data into the first main control chip, which then makes a safety judgment on the operating status of the water pump.

[0059] Specifically, when the water pump is overloaded, that is, the operating current exceeds the rated current, the relay module is disconnected after the overload state lasts for 3 seconds, and the water pump stops running; when the water pump is short of water, that is, the operating current is less than the water shortage current, the relay module is disconnected after the water shortage state lasts for 5 seconds, and the water pump stops running; when the water pump is missing a phase, the relay module is disconnected after the phase shortage state lasts for 3 seconds, and the water pump stops running; wherein, the water shortage current is set according to actual conditions, and the set value of the water shortage current is generally about 70% of the rated current.

[0060] In addition, the first main control chip is provided with a water absorption time. During the water absorption time, even if the operating current is less than the water shortage current, it is not determined to be in a water shortage state, the relay module remains energized, and the water pump remains running.

[0061] Furthermore, when the water pump enters the shutdown protection state due to overload, water shortage or phase loss, the first main control chip is controlled according to the set automatic recovery interval time. When the automatic recovery interval time is reached, the relay module is reset and the water pump runs; if the overload, water shortage or phase loss abnormality still exists, the relay module is disconnected again and the water pump stops running.

[0062] At the same time, the first main control chip is provided with an automatic recovery number. When the number of consecutive resets of the relay module reaches the automatic recovery number, the relay module is no longer reset and the water pump remains in a stopped state.

[0063] Furthermore, the user can read the operating status of the water pump and remotely control its on / off function through the RS485 communication module.

[0064] Furthermore, when the water pump is in an overloaded, water-deficient or phase-deficient state, the second main control chip outputs a signal to the digital tube driver module, and the digital tube driver module then outputs a signal to the digital tube module, and the digital tube module displays a fault, including words such as "overload", "water-deficient", and "phase-deficient".

[0065] Furthermore, when the water pump is in an overloaded, water-deficient, or phase-lost state, the first main control chip outputs a signal to the buzzer module, and the buzzer sounds an alarm.

[0066] Furthermore, parameter setting operations can be performed through the button module, such as setting the rated current, the water shortage current, and the number of automatic recovery times; when performing the parameter setting, the corresponding changes in the parameters can be displayed on the digital tube module.

[0067] Example 2

[0068] This embodiment provides a water pump, including a water pump body and a water pump electrical box; the water pump body is connected to the water pump electrical box.

[0069] Specifically, the water pump body includes a main control circuit; the main control circuit is connected to the relay module of the water pump electrical box.

[0070] For further introduction of the water pump provided in this embodiment, please refer to Example 1, and this embodiment will not be described in detail here.

[0071] The water pump provided in this embodiment has the same beneficial effects as the above-mentioned water pump electrical box.

[0072] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A water pump electric box, characterized in that: It comprises a housing and an internal circuit; the internal circuit comprises: A baseboard, comprising a power module, a switch input module, a current transformer module, an RS485 communication module, a first main control chip, a relay driver module, and a relay module; the power module is connected to the first main control chip and other modules on the baseboard; the switch input module is connected to the first input port of the first main control chip, the input end of the relay driver module is connected to the first output port of the first main control chip, the output end of the relay driver module is connected to the relay module, the current transformer module is connected to the second input port of the first main control chip, and the RS485 communication module is connected to the communication port of the first main control chip; A panel is connected to the base plate; the panel includes a key module, a second main control chip, a digital tube driver module and a digital tube module; the key module is connected to the first input port of the second main control chip, the input end of the digital tube driver module is connected to the output port of the second main control chip, and the output end of the digital tube driver module is connected to the digital tube module.

2. A water pump electrical box according to claim 1, characterized in that: The base plate further includes a buzzer module, and the buzzer module is connected to the second output port of the first main control chip.

3. A water pump electric box according to claim 2, characterized in that: The buzzer module includes a buzzer and a capacitor. The buzzer is connected to the second output port of the first main control chip, and the buzzer is also grounded through the capacitor.

4. A water pump electric box according to claim 1, characterized in that: The current transformer module includes a current transformer, and the current transformer is a direct-insertion welding current transformer.

5. A water pump electric box according to claim 1, characterized in that: The bottom plate is connected to the panel via a flexible wire or a flexible circuit board.

6. A water pump electric box according to claim 1, characterized in that: The first main control chip and the second main control chip are both STM32F030K6T6 chips.

7. A water pump electrical box according to claim 1, characterized in that: The base plate further includes a first program burning port, which is connected to the third input port of the first main control chip.

8. A water pump electric box according to claim 1, characterized in that: The panel further includes a second program burning port, and the second program burning port is connected to a second input port of the second main control chip.

9. A water pump, characterized in that: It comprises a water pump body and a water pump electrical box as described in any one of claims 1 to 8; the water pump body is connected to the water pump electrical box.

10. A water pump according to claim 9, characterized in that: The water pump body includes a main control circuit; the main control circuit is connected to the relay module of the water pump electrical box.

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