CN205478154U - Intelligence constant -pressure variable -frequency pump - Google Patents

Abstract

The utility model discloses an intelligent constant-voltage variable-frequency pump, which is characterized in that it comprises a pump body, a frequency converter and a cooling device. The first heat dissipation tooth piece in contact with the motor, and the frequency converter are arranged on the heat dissipation device. The frequency converter described in the utility model is installed on the motor of the pump body through a cooling device, and it is integrated with the pump body to reduce the occupied area of the product. At the same time, the frequency converter is installed on the cooling device, and the cooling device is installed on the motor. When the air flow of the fan in the water pump passes through the first cooling gear of the cooling device, it can not only dissipate heat for the water pump itself, but also make the inverter The heat is also conducted to the cooling device, and the frequency converter also achieves the effect of cooling. Therefore, in the utility model, the frequency converter does not need to be equipped with another cooling device, which achieves the effect of cost saving.

Description

Intelligent constant pressure variable frequency pump

technical field

The utility model relates to the technical field of water pumps, in particular to an intelligent constant-pressure variable-frequency pump.

Background technique

The structure of the traditional frequency conversion constant pressure water supply equipment is that the water pump and the frequency converter are in a separate state, which requires assembly and performance matching. Usually, the control line of the water pump motor is led to the control line box, and the control line box is connected to the inverter through a cable, and the control and operation are realized through the connection of the cable and the signal line. This method has the following disadvantages: 1. The space occupied by the water pump and the frequency converter needs to be considered at the same time, so that the occupied area is large; 2. The frequency converter also needs to be installed with a cooling device to prolong its life, which increases the cost of the whole set of equipment.

Utility model content

Based on this, the utility model is to overcome the defects of the prior art and provide an intelligent constant pressure frequency conversion pump, which combines the pump body and the frequency converter into an integrated structure to reduce the floor area of the product. At the same time, the pump body and the frequency converter Share the cooling device to reduce the production cost.

Its technical scheme is as follows:

An intelligent constant pressure frequency conversion pump, comprising a pump body, a frequency converter and a cooling device, the pump body is provided with a motor electrically connected to the frequency converter, the cooling device is arranged on the motor, and the cooling device The side opposite to the motor is provided with a first heat dissipation tooth piece in contact with the motor, and the frequency converter is arranged on the heat dissipation device.

In one of the embodiments, the frequency converter includes a circuit board arranged on the heat sink, the heat sink is provided with an opening, the motor is provided with a control line, and the control line passes through the opening and communicates with the The frequency converter is electrically connected.

In one embodiment, an IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) module is provided on the side of the circuit board facing the heat sink, and the IGBT module is offset against the heat sink.

In one embodiment, a capacitive element is provided on the side of the circuit board facing the heat sink, and a receiving groove for accommodating the capacitive element is recessed in the heat sink.

In one of the embodiments, the frequency converter further includes a cover disposed on the circuit board, and the cover is provided with a control switch and a display screen electrically connected to the circuit board.

In one of the embodiments, a first fastener is further included, and the cover is fastened to the heat sink through the first fastener.

In one embodiment, a first waterproof sealing ring sleeved on the outer periphery of the control line is provided in the opening, and a second waterproof sealing ring is provided between the surface cover and the heat dissipation device.

In one of the embodiments, it further includes a second fastener and a third fastener, the circuit board is fastened to the heat dissipation device through the second fastener, and the heat dissipation device is connected to the heat dissipation device through the first fastener. Three fasteners are tightly matched with the motor.

In one of the embodiments, the output frequency of the frequency converter and the working frequency of the motor are both 60HZ, and the output voltage of the frequency converter and the working voltage of the motor are both 200V.

In one of the embodiments, the frequency converter is arranged on the top of the motor, and the side wall of the motor is provided with second cooling fins.

The advantages or principles of the foregoing technical solutions are described below:

The frequency converter described in the utility model is installed on the motor of the pump body (water pump, etc.) through a cooling device, and it is combined with the pump body in an integrated structure, which reduces the floor area of the product. At the same time, the frequency converter is installed on the cooling device, and the cooling device is installed on the motor. When the air flow of the fan in the water pump passes through the first cooling gear of the cooling device, it can not only dissipate heat for the water pump itself, but also make the inverter The heat is also conducted to the cooling device, and the frequency converter also achieves the effect of cooling. Therefore, in the utility model, the frequency converter does not need to be equipped with another cooling device, which achieves the effect of cost saving. It can be seen from the above that the water pump and the frequency converter of the utility model are combined into one structure, which occupies a small area, and the product is compact and easy to use, and at the same time, its manufacturing cost is relatively low.

The control line of the water pump motor passes through the cooling device and is directly connected to the circuit board of the frequency converter, which changes the traditional control line wiring method, and the control line of the motor is built into the frequency converter to achieve waterproof effect and prevent the leakage of the control line. At the same time, the utility model has an integrated structure, and the internal wiring has been connected before the product leaves the factory, and the user can directly use it without assembling the wiring by itself. The utility model is practical, safe and convenient.

The side of the circuit board facing the heat dissipation device is provided with an IGBT module, and the IGBT module is offset against the heat dissipation device. The IGBT module is the main power device of the PCB circuit board. It is installed close to the heat sink, which is beneficial to guide the heat to the heat sink and achieve the effect of sufficient heat dissipation.

The capacitive element on the PCB circuit board of the utility model is located in the containing groove, which is equivalent to the heat dissipation device arranged around the capacitive element, so that the heat generated by the capacitive element will also be conducted to the heat dissipation device, so as to realize effective heat dissipation of the capacitor and extend the capacity of the capacitor. service life.

A first waterproof sealing ring is provided in the opening, and a second waterproof sealing ring is provided between the cover and the cooling device to prevent water vapor from entering the inverter and at the same time prevent water vapor from entering the motor along the control line, ensuring that the inverter and the motor Safe to run.

The heat sink and the motor, the heat sink and the circuit board, and the heat sink and the cover are fastened and matched by fasteners to achieve the purpose of easy installation, and at the same time, it is easy to disassemble and facilitate internal circuit maintenance or replacement.

The output frequency of the frequency converter and the working frequency of the motor are both 60HZ, the output voltage of the frequency converter and the working voltage of the motor are both 200V, compared with the output parameters of the common single-phase input frequency converter is 50HZ, 220V, and the working parameters of the motor are 50HZ, 220V, the utility model can not only effectively realize the matching of the working parameters of the motor and the output parameters of the frequency converter, but also improve the output capacity of the water pump and improve the water supply efficiency.

Description of drawings

Fig. 1 is a schematic structural view of the intelligent constant pressure frequency conversion pump described in the embodiment of the present invention;

Fig. 2 is a schematic structural diagram of the heat dissipation device described in the embodiment of the present invention.

Explanation of reference signs:

100. Pump body, 110. Motor, 111. Connecting seat, 112. Second cooling gear, 200. Heat sink, 210. First cooling gear, 220. Opening, 230. Accommodating groove, 240. Connecting hole, 300 , frequency converter, 310, circuit board, 311, IGBT module, 312, capacitive element, 320, surface cover, 321, control switch, 322, display screen.

detailed description

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the utility model, and do not limit the protection scope of the utility model.

As shown in Fig. 1 and Fig. 2, a kind of intelligent constant pressure frequency conversion pump described in the utility model includes a pump body 100, a frequency converter 300 and a cooling device 200, the pump body 100 is provided with a motor 110, and the cooling device 200 is arranged on the motor 110 . Specifically, the heat dissipation device 200 is arranged on the top of the motor 110, the top of the housing of the motor 110 is provided with a connection seat 111, and the heat dissipation device 200 is provided with a connection hole 240 corresponding to the connection seat 111 one by one, through the third fastening Parts (screws, screws, etc.) pass through the connection hole 240 and enter the connection seat 111 to fasten the heat sink 200 . The frequency converter 300 is disposed on the heat dissipation device 200 . A side of the heat dissipation device 200 opposite to the motor 110 is provided with a first heat dissipation fin 210 in contact with the motor casing. The frequency converter 300 and the motor 110 are respectively located on the upper and lower sides of the cooling device 200 . The frequency converter 300 described in the utility model is installed on the motor 110 of the pump body 100 (water pump, etc.) through the cooling device 200, and it is combined with the pump body 100 in an integrated structure, which reduces the floor area of the product. At the same time, the frequency converter 300 is arranged on the cooling device 200, and the cooling device 200 is located on the motor 110. When the air flow of the fan in the water pump passes through the first cooling tooth piece 210 of the cooling device 200, it can not only dissipate heat for the water pump itself, The heat of the frequency converter 300 can also be conducted to the cooling device 200, and the frequency converter 300 also achieves the effect of heat dissipation. Therefore, the frequency converter 300 of the present invention does not need to be equipped with another cooling device 200, which achieves the cost saving effect. It can be seen from the above that the water pump and the frequency converter 300 of the utility model are combined into one structure, which occupies a small area, and the product is compact and easy to use, and at the same time, its manufacturing cost is relatively low.

The heat dissipation device 200 is disposed on the top of the motor, and at the same time, the side wall of the motor 110 is also provided with a second heat dissipation tooth 112 for ensuring sufficient heat dissipation of the motor 110 . Compared with the traditional technology, the utility model removes the heat dissipation gear at the top of the traditional motor 110 and replaces it with a specially designed heat dissipation device 200. The heat dissipation device 200 can not only dissipate heat for the water pump itself, but also facilitate the installation of the frequency converter 300, and also achieve The effect of cooling the frequency converter 300 is achieved.

In this embodiment, the circuit board 310 of the frequency converter 300 is disposed on the heat dissipation device 200 , specifically, the circuit board 310 is fixed on the heat dissipation device 200 by a second fastener (screw, screw, etc.). The heat sink 200 is also provided with an opening 220 , and the control wire (not shown in the drawings) of the motor 110 passes through the opening 220 and is connected to the circuit board 310 . The utility model changes the traditional control line wiring method, and the control line of the motor 110 is built into the frequency converter 300 to achieve a waterproof effect to prevent leakage of the control line. The entire product of the utility model adopts a waterproof design, and the waterproof level is as high as IP54. At the same time, the utility model has an integrated structure, and the internal wiring has been connected before the product leaves the factory. The user can directly power on the power supply wiring of the frequency converter 300 to use it, and there is no need to assemble the wiring by itself. The utility model is practical, safe and convenient.

The side of the circuit board 310 facing the heat sink 200 is provided with an IGBT module 311 , and the IGBT module 311 is offset against the heat sink 200 . The IGBT module 311 is the main power device of the PCB circuit board 310 , and it is installed close to the heat sink 200 , which is beneficial to conduct heat to the heat sink 200 to achieve sufficient heat dissipation. Moreover, the IGBT module 311 is arranged corresponding to the middle position of the cooling device 200 , that is, it is arranged corresponding to the position where the air flow from the fan of the motor 110 is the largest, and the heat dissipation effect is the best.

Further, the side of the circuit board 310 facing the heat sink 200 is provided with a capacitive element 312 , the heat sink 200 is recessed with a receiving groove 230 for accommodating the capacitive element 312 , the first heat sink of the heat sink 200 The gear piece 210 is disposed around the outer wall of the receiving groove 230 , as shown in FIG. 2 . The capacitive element 312 is located in the accommodating groove 230, which is equivalent to the arrangement of the heat sink 200 around the capacitive element 312, so that the heat generated by the capacitive element 312 will also be conducted to the heat sink 200, so as to realize effective heat dissipation of the capacitor and prolong the use of the capacitor. life.

The frequency converter 300 also includes a cover 320 covering the circuit board 310, the cover 320 is provided with a control switch 321 and a display screen 322 electrically connected to the circuit board 310, the control switch 321 has Multiple, for the control of different functions. The cover 320 is fastened to the heat sink 200 through a first fastener (screw, screw, etc.). In this embodiment, fasteners are used to fasten and fit between the cooling device 200 and the motor 110 shell, between the cooling device 200 and the circuit board 310, and between the cooling device 200 and the cover 320, which are easy to install and easy to install. It is easy to disassemble and repair or replace the internal circuit. The drawings of this embodiment all show the above-mentioned first fastener, second fastener and third fastener.

Preferably, the opening 220 is provided with a first waterproof sealing ring (not shown in the drawings) sleeved on the outer periphery of the control line, and a second waterproof sealing ring is provided between the surface cover 320 and the heat sink 200 . The sealing ring (not shown in the drawings), the first waterproof sealing ring and the second waterproof sealing ring effectively prevent water vapor from entering the frequency converter 300, and simultaneously prevent water vapor from entering the motor 110 along the control line, so as to ensure the safe operation of the frequency conversion 300 and the motor 110 .

In this embodiment, the output frequency of the frequency converter 300 and the working frequency of the motor 110 are both 60HZ, and the output voltage of the frequency converter 300 and the working voltage of the motor 110 are both 200V, compared with ordinary The output parameters of the single-phase input frequency converter are 50HZ and 220V, and the working parameters of the motor are 50HZ and 220V. The utility model can not only effectively match the working parameters of the motor 110 with the output parameters of the frequency converter 300, but also improve the pump performance. output capacity and improve water supply efficiency, the utility model can increase the overall efficiency of the water pump by 10%.

The heat sink 200 is an aluminum alloy radiator, which has the advantages of good thermal conductivity, low density, light weight, high strength and corrosion resistance.

The technical features of the above embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be It is considered to be within the range described in this specification.

The above examples only express several implementations of the utility model, and the description thereof is more specific and detailed, but it should not be understood as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (10)

1. an Intelligent constant-voltage variable frequency pump, it is characterised in that include the pump housing, converter and heat abstractor, institute Stating the pump housing and be provided with the motor being electrically connected with described converter, described heat abstractor is located on described motor, institute State the heat abstractor side relative with described motor and be provided with the first heat radiation gear piece contacted with described motor, institute State converter to be located on described heat abstractor.

Intelligent constant-voltage variable frequency pump the most according to claim 1, it is characterised in that described converter includes Being located at the circuit board on described heat abstractor, described heat abstractor offers opening, and described motor is provided with control Line, described control line through described opening and is electrically connected with described converter.

Intelligent constant-voltage variable frequency pump the most according to claim 2, it is characterised in that described circuit board towards The side of described heat abstractor is provided with I GBT module, and described I GBT module offsets with described heat abstractor.

Intelligent constant-voltage variable frequency pump the most according to claim 2, it is characterised in that described circuit board towards The side of described heat abstractor is provided with capacity cell, and described heat abstractor is arranged with for accommodating described electric capacity unit The holding tank of part.

Intelligent constant-voltage variable frequency pump the most according to claim 2, it is characterised in that described converter also wraps Including the cover covered on described circuit board, described cover is provided with the control being electrically connected with described circuit board and opens Close and display screen.

Intelligent constant-voltage variable frequency pump the most according to claim 5, it is characterised in that also include the first fastening Part, described cover is by described first securing member and described heat abstractor secure fit.

Intelligent constant-voltage variable frequency pump the most according to claim 6, it is characterised in that be provided with in described opening It is sheathed on the first waterproof grommet of described control line periphery, is provided with between described cover and described heat abstractor Second waterproof grommet.

Intelligent constant-voltage variable frequency pump the most according to claim 2, it is characterised in that also include the second fastening Part and the 3rd securing member, described circuit board by described second securing member and described heat abstractor secure fit, Described heat abstractor is by described 3rd securing member and described motor secure fit.

Intelligent constant-voltage variable frequency pump the most according to claim 1, it is characterised in that described converter defeated The operating frequency going out frequency and described motor is 60HZ, the output voltage of described converter and described motor Running voltage is 200V.

Intelligent constant-voltage variable frequency pump the most according to any one of claim 1 to 9, it is characterised in that The top of described motor is located at by described converter, and the sidewall of described motor is provided with the second heat radiation gear piece.