CN219068072U - Variable frequency cabinet and heating and ventilation equipment - Google Patents

Abstract

The utility model discloses a frequency conversion cabinet and heating and ventilation equipment, wherein the frequency conversion cabinet comprises: a cabinet body, the cabinet body is provided with an accommodating cavity, the front side of the accommodating cavity has an opening, and the rear side has a backboard, The accommodating cavity is configured to accommodate electronic devices; a first mounting plate, the first mounting plate is arranged in the cabinet, and stacked on the front side of the back plate, and the first mounting plate and the There is a gap between the backboards; wherein, a plurality of circuit boards are stacked and mounted on the first mounting board. In the above-mentioned frequency conversion cabinet, a plurality of circuit boards are stacked and installed on the first mounting board, the circuit boards are highly integrated, the number of single boards is reduced, and the power density is improved.

Description

Frequency conversion cabinet and HVAC equipment

technical field

The utility model relates to the technical field of frequency conversion devices, in particular to a frequency conversion cabinet and heating and ventilation equipment.

Background technique

The frequency conversion cabinet control cabinet, referred to as the frequency conversion cabinet, can be widely used in metallurgy, chemical industry, petroleum, water supply, mining, building materials, motor industries and other pumps, fans, compressors, rolling mills, injection molding machines, belt conveyors and other medium voltage electrical appliances. machine equipment.

In the related art, the frequency conversion cabinet includes a plurality of electronic devices such as frequency conversion cabinet power components, frequency conversion cabinet control components, and frequency conversion cabinet control components.

Utility model content

The embodiment of the utility model provides a frequency conversion cabinet and heating and ventilation equipment.

The frequency conversion cabinet of the embodiment of the utility model includes:

A cabinet body, the cabinet body is provided with an accommodating cavity, the front side of the accommodating cavity has an opening, and the rear side has a backboard, and the accommodating cavity is configured to accommodate electronic devices;

a first mounting plate, the first mounting plate is arranged in the cabinet and stacked on the front side of the back plate, and there is a gap between the first mounting plate and the back plate;

Wherein, a plurality of circuit boards are stacked and mounted on the first mounting board.

In the above-mentioned frequency conversion cabinet, a plurality of circuit boards are stacked and installed on the first mounting board, the circuit boards are highly integrated, the number of single boards is reduced, and the power density is improved.

In some embodiments, the plurality of circuit boards are arranged side by side and stacked on the same side of the first mounting board.

In some implementations, the plurality of circuit boards are stacked on a side of the first mounting board away from the backplane;

Or, the plurality of circuit boards are stacked on a side of the first mounting board facing the backplane.

In some embodiments, the plurality of circuit boards are respectively stacked on opposite sides of the first mounting board along the front and rear directions, at least one of the plurality of circuit boards is stacked on the first mounting board One side facing the backboard, and at least one stacked on the side of the first mounting board away from the backboard.

In some embodiments, the coverage of the plurality of circuit boards on one side surface of the first mounting board is not less than 90%;

Or, the total area of the plurality of circuit boards is not less than 90% of one side surface of the first mounting board.

In some embodiments, the frequency conversion cabinet also includes:

A second mounting plate, the second mounting plate is arranged in the cabinet and stacked on the front side of the first mounting plate, and there is a gap between the second mounting plate and the first mounting plate.

In some embodiments, the frequency conversion cabinet includes an air conditioning unit valve control board and a main control board, the air conditioning unit valve control board is used to connect the control valve of the air conditioning unit, and the main control board and the air conditioning unit valve control The board is connected and arranged on the first installation board, and the main control board is opposite to the valve control board of the air conditioner unit along the front and rear direction.

In some embodiments, the second mounting plate is reversibly disposed in the cabinet between an open position and a closed position, the second mounting plate exposes the first mounting plate when opened, and the second mounting plate is exposed when closed Cover the first mounting plate.

In some embodiments, the frequency conversion cabinet also includes:

The third installation board, the third installation board is arranged in the cabinet, and stacked on the front side of the back board, and there is a gap between the third installation board and the back board, the third installation board The installation board is arranged side by side with the second installation board, and the first weak current device is arranged on the third installation board.

In some embodiments, the third installation board is provided with at least one of a wiring socket, a wiring trough, and a smart meter.

In some embodiments, the frequency conversion cabinet also includes:

A fourth installation plate, the fourth installation plate is arranged in the cabinet and stacked on the front side of the back plate, and there is a gap between the fourth installation plate and the back plate, the fourth The installation board is arranged side by side with the first installation board, and the first weak current device is arranged on the fourth installation board.

In some embodiments, a part of the fourth mounting board is stacked on the rear side of the third mounting board, and another part is stacked on the rear side of the second mounting board.

In some embodiments, the third mounting plate is reversibly hinged to the fourth mounting plate, so as to cover and reveal the rear structure of the third mounting plate.

In some embodiments, the accommodating cavity includes a first cavity and a second cavity, and the first cavity is configured as an air duct structure to dissipate heat from the electronic devices in the first cavity, and the second cavity separated from the first cavity.

In some embodiments, also include:

An airflow driving part, the airflow driving part is arranged in the first chamber and configured to drive the cooling airflow to circulate in the first chamber, at least one of the plurality of circuit boards is electrically connected to the airflow driving part.

In some embodiments, also include:

The first radiator, the first radiator is arranged in the first cavity, configured to reduce the temperature in the first cavity by air cooling, and the airflow driver is configured to drive the cooling airflow to flow through The electronic device in the first cavity and the first heat sink.

In some embodiments, also include:

The second heat sink is configured to dissipate heat for the electronic devices in the second cavity through heat conduction.

In some embodiments, also include:

a door body, the door body is connected to the cabinet body and is configured to open and close the accommodating cavity,

Wherein, electronic devices are arranged on the door body.

In some embodiments, at least one of a communication module, a display module, a low-voltage control module and an emergency stop button is provided on the door body.

The HVAC equipment adopted in the embodiment of the utility model includes:

The frequency conversion cabinet in any of the above-mentioned embodiments;

An air-conditioning unit, the air-conditioning unit is connected with the frequency conversion cabinet.

In some embodiments, the unit control board of the air-conditioning unit is integrated on the frequency conversion cabinet, and the unit control board and the air-conditioning unit transmit signals.

In the above heating and ventilation equipment, a plurality of circuit boards are stacked and installed on the first mounting board, the circuit boards are highly integrated, the number of single boards is reduced, and the power density is improved.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

Fig. 1 is a schematic diagram of a frequency conversion cabinet according to an embodiment of the present invention, wherein the door body is closed.

Fig. 2 is a schematic diagram of a frequency conversion cabinet according to an embodiment of the present invention, wherein the door is opened.

Fig. 3 is a schematic diagram of a frequency conversion cabinet according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of a frequency conversion cabinet according to an embodiment of the present invention.

Fig. 5 is a schematic diagram of a frequency conversion cabinet according to an embodiment of the present invention.

Fig. 6 is a schematic diagram of a frequency conversion cabinet according to an embodiment of the present invention.

Fig. 7 is a schematic diagram of a frequency conversion cabinet according to an embodiment of the present invention.

Reference signs: frequency conversion cabinet 100, cabinet body 10, opening 12, back panel 14, side panel 16, door body 18, first installation board 101, second installation board 102, third installation board 103, fourth installation board 104 , accommodating chamber 20, first chamber 201, first radiator 2011, second chamber 202, second radiator 2021, airflow driver 22, electronic device 30, circuit board 32, air conditioning unit valve control board 40, main control Plate 42, control valve 44.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", Orientation indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. Or the positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be configured in a specific orientation, and operation, and therefore cannot be construed as a limitation of the utility model. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Disassemble the connection, or connect in one piece. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two elements or the interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, and may also include the first and second features being in direct contact with each other. The features are not in direct contact but through another feature between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

The disclosure herein provides many different implementations or examples for realizing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described herein. Of course, they are only examples, and the purpose is not to limit the utility model. Furthermore, the present disclosure may repeat reference numerals and/or reference letters in different instances, such repetition is for simplicity and clarity and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, various specific process and material examples are provided herein, but one of ordinary skill in the art may recognize the use of other processes and/or the use of other materials.

Referring to FIGS. 1-7 , the frequency conversion cabinet 100 according to the embodiment of the present utility model includes: a cabinet body 10 and a first mounting plate 101 . Wherein, the cabinet body 10 is provided with an accommodating chamber 20 , the accommodating chamber 20 has an opening 12 on the front side, and a backboard 14 on the rear side, and the accommodating chamber 20 is configured to accommodate the electronic device 30 . The first installation board 101 is arranged in the cabinet body 10, and is laminated on the front side of the backboard 14, and there is a gap between the first installation board 101 and the backboard 14, wherein, the first installation board 101 is stacked and installed with multiple circuit board 32 .

In the frequency conversion cabinet 100 mentioned above, a plurality of circuit boards 32 are stacked and mounted on the first installation board 101 , the circuit boards 32 are highly integrated, the number of single boards is reduced, and the power density is improved.

Specifically, referring to FIGS. 2-4 , the front side of the accommodating cavity 20 in the cabinet 10 has an opening 12 , and the rear side has a backboard 14 . Above, the side of the opening 12 of the cabinet body 10 shown in the figure is the left and right direction of the cabinet body 10 along the short side direction, and the side of the opening 12 of the cabinet body 10 shown in the figure is the up and down direction of the cabinet body 10 along the long side direction. The accommodating cavity 20 provided in the cabinet body 10 is used for accommodating the electronic device 30 . In order to facilitate the installation and maintenance of the electronic device 30 , an opening 12 is provided on the front side of the accommodating cavity 20 . A backboard 14 is arranged on the rear side of the cabinet body 10 , and a sideboard 16 is arranged on the side. A plurality of circuit boards 32 are stacked and mounted on the first mounting board 101 provided in the cabinet body 10 , so that the degree of integration is high, the number of single boards is reduced, and the power density is improved.

The electronic device 30 in the accommodating chamber 20 may include the electronic device 30 housed in the accommodating chamber 20 may include an electric control board, a 2G module, a display screen, an emergency stop button, a control board, a guide vane fan board, a control board, and a terminal block. , smart telegraph, transformer, circuit breaker, 24V power board, drive board, control board, 380V power board, APF, filter board, absorption resistor, capacitor, IGBT, transformer, snubber resistor, fan, evaporator, reactor, mutual inductance devices, diodes. Among them, the high-voltage components may include absorption resistors, capacitors, IGBTs, transformers, snubber resistors, fans, evaporators, reactors, transformers, and diodes. Weak current devices can include electric control boards, 2G modules, display screens, emergency stop buttons, control boards, guide vane fan boards, control boards, terminal blocks, smart telegrams, transformers, circuit breakers, 24V power boards, drive boards, and control boards , 380V power board, APF, filter board.

In some implementations, the electronic devices 30 are arranged in layers along the front-to-back direction, and the layers are distinct, which can be realized by installing the electronic devices 30 on multiple mounting boards arranged in layers along the front-to-back direction in the cabinet body 10 . Referring to Fig. 3, in this embodiment, there are a plurality of mounting plates in the cabinet 10, the first mounting plate 101, the second mounting plate 102, the third mounting plate 103 and the fourth mounting plate 104, and the four mounting plates are stacked on the There are gaps between the front side of the backboard 14 and the first installation board 101 , the second installation board 102 , the third installation board 103 and the fourth installation board 104 and the back board 14 . The electronic devices 30 are mounted on the first mounting board 101 , the second mounting board 102 , the third mounting board 103 and the fourth mounting board 104 , so that the electronic devices 30 are arranged in layers along the front and back direction, and the layers are distinct.

In some embodiments, referring to FIGS. 5-7 , multiple circuit boards 32 are arranged side by side and stacked on the same side of the first mounting board 101 .

In this way, the frequency converter has a compact structure and a high degree of integration, which improves the power density.

Specifically, multiple circuit boards 32 are arranged side by side and stacked on the same side of the first mounting board 101 , so that the structure of the frequency conversion cabinet 100 becomes compact, the integration degree is high, and the power density is improved. In some embodiments, the circuit board 32 includes a power board, a driver board, and a control board. The power supply board, the driving board and the control board are stacked on the right side of the first mounting board 101 .

In some embodiments, referring to FIGS. 5-7 , a plurality of circuit boards 32 are stacked on the side of the first mounting board 101 away from the backplane 14; or, a plurality of circuit boards 32 are stacked on the side of the first mounting board 101 The side facing the back plate 14 .

In this way, the frequency converter has a compact structure and a high degree of integration, which improves the power density.

Specifically, when a plurality of circuit boards 32 are stacked on the side of the first mounting board 101 away from the backplane 14 , the plurality of circuit boards 32 are installed on the same side, which has a compact structure and a high degree of integration, which can increase power density. The circuit board 32 is stacked on the side of the first mounting board 101 away from the back plate 14 , that is, the side of the circuit board 32 facing the opening 12 of the accommodating cavity 20 is convenient for installation or maintenance. When multiple circuit boards 32 are stacked on the side of the first mounting board 101 facing the backplane 14 , the multiple circuit boards 32 are mounted on the same side, with compact structure and high integration, which can increase power density. The circuit board 32 is stacked on the side of the first mounting board 101 facing the backplane 14 , that is, the side of the circuit board 32 facing the backplane 14 is convenient for protecting the circuit board 32 .

In some embodiments, referring to FIGS. 5-7 , a plurality of circuit boards 32 are respectively stacked on opposite sides of the first mounting board 101 along the front and rear directions, and at least one of the plurality of circuit boards 32 is stacked on the first mounting board 101 . The upper side of the board 101 faces the backboard 14 , and at least one is stacked on the side of the first mounting board 101 facing away from the backboard 14 .

In this way, multiple circuit boards 32 are stacked and mounted on different sides of the first mounting board 101 , the circuit boards 32 are highly integrated, the number of single boards is reduced, and the power density is improved.

Specifically, the first mounting board 101 has a plurality of circuit boards 32 on opposite sides in the front-rear direction. For the circuit board 32 stacked on the first installation board 101 facing the side of the backboard 14, it is convenient to protect the circuit board 32; Plate 32 faces opening 12 for ease of maintenance and installation.

In some embodiments, referring to FIGS. 5-7 , the coverage of the plurality of circuit boards 32 on one side surface of the first mounting board 101 is not less than 90%; or, the total area of the plurality of circuit boards 32, Not less than 90% of the surface of one side of the first installation board 101 .

In this way, the coverage of the circuit board 32 on the first mounting board 101 is high, so that the structure of the frequency converter is compact, and the space utilization rate of the frequency conversion cabinet 100 can be improved.

Specifically, when the coverage rate of the plurality of circuit boards 32 on one side surface of the first mounting board 101 is not lower than 90%, in some embodiments, the plurality of circuit boards 32 are arranged side by side on the first mounting board 101 In this way, it is convenient to arrange the circuit board 32, and the structure is compact, which can improve the utilization rate of space. When the total area of the plurality of circuit boards 32 is not less than 90% of the surface on one side of the first mounting board 101, in some embodiments, the plurality of circuit boards 32 are connected to each other on the first mounting board 101, so that the structure is compact , can improve space utilization.

In some embodiments, referring to FIG. 3 , the frequency conversion cabinet 100 further includes: a second installation board 102, the second installation board 102 is arranged in the cabinet body 10, and stacked on the front side of the first installation board 101, and the second installation board 102 There is a gap between the installation board 102 and the first installation board 101 .

In this way, the setting of the second mounting plate 102 in the cabinet body 10 facilitates the installation of the first weak electric device on the second mounting plate 102, and there is a gap between the second mounting plate 102 and the first mounting plate 101, which can reduce the electrical components. Interference, easy to dissipate heat.

Specifically, the first weak current device is provided on the second installation board 102 in the cabinet 10. Referring to the above, the first weak current device on the second installation board 102 may include a transformer, a circuit breaker, a 24V power supply board, a drive board, control board, APF, filter board. In some embodiments, the transformer, circuit breaker and 24V power board are arranged on the upper side of the second installation board 102 ; the driver board, control board, APF and filter board are arranged on the lower side of the second installation board 102 .

In some embodiments, referring to FIG. 2 and FIG. 7 , the frequency conversion cabinet 100 includes an air conditioning unit valve control board 40 and a main control board 42 , the air conditioning unit valve control board 40 is used to connect the air conditioning unit control valve 44 , and the main control board 42 It is connected with the valve control board 40 of the air conditioning unit and is arranged on the first installation board 101 . The main control board 42 is opposite to the valve control board 40 of the air conditioning unit along the front and rear direction.

The valve control board 40 and the main control board 42 of the air conditioning unit are arranged on the first mounting board 101 , so that they are layered with the first high-voltage device, which can reduce the interference between electrical components and facilitate heat dissipation.

Specifically, the valve control board 40 and the main control board 42 of the air conditioning unit are respectively arranged on two sides of the first installation board 101 . In some embodiments, the valve control board 40 of the air conditioner unit is arranged on the left side of the first installation board 101 , and the main control board 42 is arranged on the right side of the first installation board 101 .

In some embodiments, referring to FIG. 3 , the second mounting plate 102 is reversibly disposed in the cabinet body 10 between the open position and the closed position. When the second mounting plate 102 is opened, the first mounting plate 101 is exposed, and when closed Cover the first installation board 101 at this time.

The second mounting plate 102 is reversibly disposed in the cabinet body 10 , exposes the first mounting plate 101 when opened, and covers the first mounting plate 101 when closed. In this way, it is convenient to install or maintain the electronic device 30 on the first mounting board 101 .

Specifically, the first mounting plate 101 is located on the rear side of the second mounting plate 102, and the second mounting plate 102 is reversibly disposed in the cabinet body 10. When opened, the first mounting plate 101 is exposed, and when closed, the first mounting plate 101 is covered. The first weak current device is installed on the first installation board 101, the first weak current device on the first installation board 101 can be installed or repaired by opening the second installation board 102, and the first weak current device on the first installation board 101 can be protected by closing the second installation board 102. The first weak current device.

In some embodiments, referring to FIG. 3 , the frequency conversion cabinet 100 further includes: a third installation board 103, the third installation board 103 is arranged in the cabinet body 10, and stacked on the front side of the backplane 14, and the third installation board 103 There is a gap between 103 and the backplane 14 , the third installation board 103 and the second installation board 102 are arranged side by side, and the first weak current device is arranged on the third installation board 103 .

In this way, the arrangement of the third mounting plate 103 in the cabinet body 10 facilitates the installation of the first weak current device on the third mounting plate 103, and there is a gap between the third mounting plate 103 and the back plate 14, which can reduce the interference between electrical components. It is easy to dissipate heat.

Specifically, the first weak current device is provided on the third installation board 103 in the cabinet body 10 . Referring to the above, the first weak current device on the first installation board 101 may include a smart meter and a power strip. In some implementations, the wiring socket is arranged horizontally on the third installation board 103 , and the smart meter is installed on the left side of the wiring socket. The third installation board 103 and the second installation board 102 are arranged side by side, so that the frequency conversion cabinet 100 has a compact structure.

In some embodiments, the third installation board 103 is provided with at least one of a wiring socket, a wiring trough, and a smart meter.

In this way, the functions of the corresponding electronic device 30 can be realized.

Specifically, referring to the above, the third mounting board 103 is installed with the first weak current device, and the first weak current device may include at least one of a wiring strip, a wiring trough, and a smart meter, and may realize the function of the corresponding electronic device 3030 .

In some embodiments, referring to FIG. 3 , the frequency conversion cabinet 100 further includes: a fourth mounting plate 104, the fourth mounting plate 104 is arranged in the cabinet body 10, and stacked on the front side of the back plate 14, and the fourth mounting plate 104 There is a gap between 104 and the back plate 14 , the fourth mounting plate 104 is arranged side by side with the first mounting plate 101 , and the first weak current device is disposed on the fourth mounting plate 104 .

In this way, the arrangement of the third mounting plate 103 in the cabinet body 10 facilitates the installation of the first weak current device on the third mounting plate 103, and there is a gap between the third mounting plate 103 and the back plate 14, which can reduce the interference between electrical components. It is easy to dissipate heat.

Specifically, the first weak current device is disposed on the fourth installation board 104 provided in the cabinet body 10 . Referring to the above, the first weak current device on the first installation board 101 may include a power board. The fourth installation board 104 is arranged side by side with the first installation board 101 , so that the frequency conversion cabinet 100 has a compact structure.

In some embodiments, referring to FIG. 3 , a part of the fourth mounting board 104 is stacked on the rear side of the third mounting board 103 , and another part is stacked on the rear side of the second mounting board 102 .

In this way, the fourth mounting board 104 can mount larger first weak current components.

Specifically, referring to the above, in some embodiments, the first installation board 101 and the fourth installation board 104 are arranged side by side, the second installation board 102 and the third installation board 103 are arranged side by side, and the second installation board 102 and the third installation board 103 is located on the front side of the first installation board 101 and the fourth installation board 104 . A part of the fourth mounting plate 104 is stacked on the rear side of the third mounting plate 103, and another part is stacked on the rear side of the second mounting plate 102. In this way, the area of the fourth mounting plate 104 is larger than that of the third mounting plate 103, which is convenient for the fourth mounting plate 104. The mounting board 104 is mounted with the first weak current device.

In some embodiments, referring to FIG. 3 , the third mounting plate 103 is reversibly hinged to the fourth mounting plate 104 to cover and reveal the rear structure of the third mounting plate 103 .

In this way, the structure on the rear side of the third mounting board 103 can be covered and revealed.

Specifically, the third mounting plate 103 and the fourth mounting plate 104 are located on the same side of the accommodating cavity 20, and the third mounting plate 103 is reversibly hinged with the fourth mounting plate 104 to cover and expose the rear side of the third mounting plate 103. Structure.

In some embodiments, referring to FIG. 4, the accommodating chamber 20 includes a first chamber 201 and a second chamber 202, and the first chamber 201 is configured as an air duct structure to dissipate heat from the electronic device 30 in the first chamber 201. The second cavity 202 is separated from the first cavity 201 .

In this way, the first cavity 201 and the second cavity 202 are used to place the electronic device 30 , and the first cavity 201 is configured as a cooling air duct structure, which can improve the cooling effect of the frequency conversion cabinet 100 and reduce the noise of the frequency conversion cabinet 100 .

Specifically, the accommodating cavity 20 includes a first cavity 201, and the first cavity 201 is configured as a heat dissipation air duct structure for heat dissipation, in other words, the electronic device 30 in the first cavity 201 can be taken away by the circulation of the airflow in the first cavity 201. heat on the surface to achieve the purpose of heat dissipation of the electronic device 30. The second cavity 202 is provided with a first strong electric device, a first weak electric device and a second strong electric device. In some embodiments, the first chamber 201 is a closed chamber, which forms a closed flow passage in the cabinet, and the combination of the airflow driver 22 and the first heat sink 2011 mentioned below can be used to realize the control. Heat dissipation of the electronic device 30 in the first cavity 201 . And the second cavity 202 can be set to the form of opening, for example, the space outside the first cavity 201 in the cabinet body 10 is set to the second cavity 202, this moment because the second cavity 202 is an open space, can facilitate the second cavity Installation and maintenance of the electronic device 30 in the second chamber 202.

In some embodiments, referring to FIG. 3 and FIG. 4 , it also includes: an airflow driver 22, the airflow driver 22 is disposed in the first chamber 201, and is configured to drive the heat dissipation airflow to circulate in the first chamber 201, and a plurality of circuits At least one of the plates 32 is electrically connected to the airflow driver 22 .

In this way, the flow of air in the first chamber 201 can be ensured.

Specifically, in order to promote the flow of air in the first chamber 201, the cabinet 10 may further include an airflow driver 22, which may be configured to drive the airflow in the first chamber 201 to form a heat dissipation airflow, and the heat dissipation airflow may be set to The flow passes through the electronic device 30 in the first cavity 201 and the first radiator 2011 . When the airflow passes through the first radiator 2011, the heat in the airflow can be exchanged to the first radiator 2011 to lower the temperature of the airflow, and the cooling capacity of the first radiator 2011 can be absorbed for cooling the first cavity 201 Carry out heat dissipation; when the airflow flows through the electronic device 30 in the first chamber 201, the cold energy in the airflow can be exchanged to the electronic device 30 in the first chamber 201, and the heat of the electronic device 30 in the first chamber 201 can be brought to dissipate heat from the electronic device 30 in the first cavity 201. That is to say, the heat of the electronic device 30 in the first cavity 201 is sent to the first heat sink 2011 to realize the heat dissipation of the electronic device 30 in the first cavity 201 .

In some embodiments, referring to FIG. 4 , further comprising: a first heat sink 2011, the first heat sink 2011 is disposed in the first cavity 201, configured to reduce the temperature in the first cavity 201 by air cooling, and The airflow driver 22 is configured to drive the heat dissipation airflow to flow through the electronic device 30 and the first heat sink 2011 in the first cavity 201 .

In this way, the first radiator 2011 can dissipate heat from the electronic device 30 in the first cavity 201 .

Specifically, a first heat sink 2011 can be provided in the first cavity 201, and the first heat sink 2011 can provide cooling capacity. When the heat in the first cavity 201 is reduced by air cooling, the first heat sink 2011 can bring The heat in the wind is dissipated, and the airflow is dissipated in time, so that the airflow can better dissipate heat with the electronic device 30 in the first cavity 201 , and effectively improve the air cooling effect in the first cavity 201 . The heat exchange between the first heat sink 2011 and the electronic device 30 in the first cavity 201 is realized through the airflow, and the temperature in the first cavity 201 is lowered by air cooling.

In some embodiments, referring to FIG. 1 , it further includes: a second radiator 2021 configured to dissipate heat from the electronic device 30 in the second cavity 202 through heat conduction.

In this way, the second radiator 2021 can dissipate heat from the electronic device 30 in the second cavity 202 .

Specifically, a second heat sink 2021 corresponding to the second cavity 202 may be provided, and the second heat sink 2021 may be configured to dissipate heat for the electronic device 30 in the second cavity 202 through heat conduction. In this way, the heat dissipation of the electronic device 30 in the second cavity 202 is realized. Through heat conduction, the heat dissipation efficiency and effect can be improved, and rapid heat dissipation can be realized for the electronic device 30 with a relatively high operating temperature.

In some embodiments, referring to FIG. 2 , it further includes: a door body 18 connected to the cabinet body 10 and configured to open and close the accommodating chamber 20 , wherein the door body 18 is provided with an electronic device 30 .

In this way, referring to the above, the setting of the door body 18 is convenient for opening and closing the accommodating cavity 20 .

Specifically, in addition, a door body 18 can be installed on the cabinet body 10 , and the cabinet body 10 can be opened and closed through the door body 18 . Specifically, in some embodiments, the door body 18 can be used to open and close the second chamber 202. When the door body 18 is opened, the second chamber 202 is opened, which can facilitate the access to the electronic device 30 in the second chamber 202. Installation and enclosure, and it is convenient to check the operating status of the frequency conversion cabinet 100 through the electronic device 30 in the second cavity 202, and at this time, the first cavity 201 is in a closed state, which will not affect the space in the second cavity 202, In the second chamber 202, it can be maintained in an environment with low humidity and less dust, and its heat dissipation effect and operation stability are relatively high; when the door body 18 is closed, the second chamber 202 is closed, and at this time, A relatively closed environment will be formed in the second chamber 202. At this time, under the action of natural convection or other methods, the temperature in the second chamber 202 can be relatively uniform everywhere, and the second chamber can also be realized to a certain extent. Heat dissipation of electronic device 30 in 202 .

In some embodiments, the door body 18 is provided with at least one of a communication module, a display module, a low voltage control module and an emergency stop button.

In this way, the setting of at least one of the communication module, the display module, the low-voltage control module and the emergency stop button can realize the corresponding function.

Specifically, the door body 18 is provided with at least one of a communication module, a display module, a low-voltage control module, and an emergency stop button. On the one hand, the structure of the frequency conversion cabinet 100 is made compact; Realize the corresponding function.

The HVAC equipment adopted in the embodiments of the present utility model includes: the frequency conversion cabinet 100 and the air conditioning unit in any of the above embodiments, and the air conditioning unit is connected to the frequency conversion cabinet 100 .

In the above HVAC equipment, a plurality of circuit boards 32 are stacked and mounted on the first installation board 101 , the circuit boards 32 are highly integrated, the number of single boards is reduced, and the power density is improved.

Specifically, for the HVAC equipment including the frequency conversion cabinet 100 in any of the above-mentioned embodiments, the circuit board 32 in the frequency conversion cabinet 100 is stacked on the inner surface of the accommodating cavity 20, which has a compact structure, facilitates heat dissipation, and improves the power density of electrical components.

In some embodiments, the unit control board of the air-conditioning unit is integrated on the frequency conversion cabinet 100, and the unit control board and the air-conditioning unit transmit signals.

In this way, the control board of the unit is integrated into the HVAC equipment of the frequency conversion cabinet 100, which has a compact structure and improves the power density.

Specifically, the unit control board of the air-conditioning unit is integrated on the frequency conversion cabinet 100, and the unit control board and the air-conditioning unit transmit signals. The control board of the unit is integrated in the frequency conversion cabinet 100 HVAC equipment, which has a compact structure and improves the power density.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations of the present invention, and those skilled in the art are within the scope of the present invention. Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (21)

1. A frequency conversion cabinet, characterized in that, comprising: A cabinet body, the cabinet body is provided with an accommodating cavity, the front side of the accommodating cavity has an opening, and the rear side has a backboard, and the accommodating cavity is configured to accommodate electronic devices; a first mounting plate, the first mounting plate is arranged in the cabinet and stacked on the front side of the back plate, and there is a gap between the first mounting plate and the back plate; Wherein, a plurality of circuit boards are stacked and mounted on the first mounting board. 2. The frequency conversion cabinet according to claim 1, wherein the plurality of circuit boards are arranged side by side and stacked on the same side of the first installation board. 3. The frequency conversion cabinet according to claim 2, wherein the plurality of circuit boards are stacked on a side of the first mounting board away from the backboard; Or, the plurality of circuit boards are stacked on a side of the first mounting board facing the backplane. 4. The frequency conversion cabinet according to claim 1, wherein the plurality of circuit boards are respectively stacked on opposite sides of the first mounting plate along the front and rear directions, at least one of the plurality of circuit boards stacked on the side of the first mounting board facing the backboard, and at least one stacked on the side of the first mounting board facing away from the backboard. 5. The frequency conversion cabinet according to any one of claims 1-4, wherein the coverage of the plurality of circuit boards on one side surface of the first mounting board is not less than 90%; Or, the total area of the plurality of circuit boards is not less than 90% of one side surface of the first mounting board. 6. The frequency conversion cabinet according to any one of claims 1-4, characterized in that, the frequency conversion cabinet further comprises: A second mounting plate, the second mounting plate is arranged in the cabinet and stacked on the front side of the first mounting plate, and there is a gap between the second mounting plate and the first mounting plate. 7. The frequency conversion cabinet according to claim 6, characterized in that, the frequency conversion cabinet comprises an air conditioning unit valve control board and a main control board, the air conditioning unit valve control board is used to connect the control valve of the air conditioning unit, the main The control board is connected with the valve control board of the air conditioner unit and is arranged on the first installation board, and the main control board is opposite to the valve control board of the air conditioner unit along the front and rear direction. 8. The frequency conversion cabinet according to claim 6, characterized in that, the second mounting plate is reversibly arranged in the cabinet between the open position and the closed position, and when the second mounting plate is opened, the the first mounting plate, and cover the first mounting plate when closed. 9. The frequency conversion cabinet according to claim 6, characterized in that, the frequency conversion cabinet further comprises: The third installation board, the third installation board is arranged in the cabinet, and stacked on the front side of the back board, and there is a gap between the third installation board and the back board, the third installation board The installation board is arranged side by side with the second installation board, and the first weak current device is arranged on the third installation board. 10 . The frequency conversion cabinet according to claim 9 , wherein at least one of a wiring socket, a wiring trough, and a smart meter is provided on the third mounting plate. 11 . 11. The frequency conversion cabinet according to claim 9, characterized in that, the frequency conversion cabinet further comprises: A fourth installation plate, the fourth installation plate is arranged in the cabinet and stacked on the front side of the back plate, and there is a gap between the fourth installation plate and the back plate, the fourth The installation board is arranged side by side with the first installation board, and the first weak current device is arranged on the fourth installation board. 12 . The frequency conversion cabinet according to claim 11 , wherein a part of the fourth installation board is stacked on the rear side of the third installation board, and another part is stacked on the rear side of the second installation board. 13 . 13 . The frequency conversion cabinet according to claim 11 , wherein the third mounting plate is reversibly hinged to the fourth mounting plate to cover and reveal the rear structure of the third mounting plate. 14 . 14. The frequency conversion cabinet according to claim 1, wherein the accommodating cavity includes a first cavity and a second cavity, and the first cavity is configured as an air duct structure to The electronic device dissipates heat, and the second cavity is separated from the first cavity. 15. The frequency conversion cabinet according to claim 14, further comprising: An airflow driving part, the airflow driving part is arranged in the first chamber and configured to drive the cooling airflow to circulate in the first chamber, at least one of the plurality of circuit boards is electrically connected to the airflow driving part. 16. The frequency conversion cabinet according to claim 15, further comprising: The first radiator, the first radiator is arranged in the first cavity, configured to reduce the temperature in the first cavity by air cooling, and the airflow driver is configured to drive the cooling airflow to flow through The electronic device in the first cavity and the first heat sink. 17. The frequency conversion cabinet according to claim 14, further comprising: The second heat sink is configured to dissipate heat for the electronic devices in the second cavity through heat conduction. 18. The frequency conversion cabinet according to any one of claims 1-4, further comprising: a door body, the door body is connected with the cabinet body and configured to open and close the accommodating cavity, Wherein, electronic devices are arranged on the door body. 19. The frequency conversion cabinet according to claim 18, wherein at least one of a communication module, a display module, a low-voltage control module and an emergency stop button is provided on the door body. 20. A heating and ventilation equipment, characterized in that it comprises: The frequency conversion cabinet according to any one of claims 1-19; An air-conditioning unit, the air-conditioning unit is connected with the frequency conversion cabinet. 21. The HVAC equipment according to claim 20, wherein the unit control board of the air conditioning unit is integrated on the frequency conversion cabinet, and the unit control board and the air conditioning unit transmit signals.

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