CN219421281U - 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, and the accommodating cavity is configured to accommodate electronic devices; a first junction box, the first junction box is arranged outside the cabinet body, and is located on the side of the cabinet body; a second junction box, the second junction box is arranged outside the cabinet body, and is located on the back of the cabinet body. In the frequency conversion cabinet above, the first junction box is located outside the cabinet and on the side of the cabinet, and the second junction box is located outside the cabinet and on the back of the cabinet. The layout of the junction boxes is reasonable and easy for customers to install.

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

Frequency conversion cabinet control cabinet, referred to as 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 motor equipment.

In the related art, there are problems such as chaotic layout of copper bars and unreasonable layout.

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, and the accommodating cavity is configured to accommodate electronic devices;

a first junction box, the first junction box is located outside the cabinet and on the side of the cabinet;

A second junction box, the second junction box is arranged outside the cabinet and at the back of the cabinet.

In the frequency conversion cabinet above, the first junction box is located outside the cabinet and on the side of the cabinet, and the second junction box is located outside the cabinet and on the back of the cabinet. The layout of the junction boxes is reasonable and easy for customers to install.

In certain embodiments, one of the first junction box and the second junction box is used for power input and the other is used for power output.

In some embodiments, the frequency conversion cabinet further includes a metal bar, the metal bar is electrically connected to the electronic device in the accommodating cavity, and extends into the first junction box and the second junction box for power input or power output.

In some embodiments, at least one of the first junction box and the second junction box is further provided with a positioning block, and the part of the metal bar protruding into the junction box corresponds to the positioning block, and the positioning block cooperates with the metal bar to position the cable joint.

In some embodiments, the first junction box is configured for power input, the metal row includes a first input row and a second input row, both of the first input row and the second input row protrude into the first junction box, and the first input row and the second input row are arranged at intervals in the first junction box, and the first input row and the second input row are adapted to be independently connected to a power supply.

In some embodiments, one of the first input bank and the second input bank is used for connecting to an AC grid, and the other is used for connecting to a backup power source.

In some embodiments, a circuit breaker is provided in the accommodating cavity, an input end of the circuit breaker is connected to the first input bank, and an output end of the circuit breaker is connected to the second input bank.

In some embodiments, the accommodating chamber includes a first chamber and a second chamber, and the frequency conversion cabinet further includes:

a first radiator, disposed in the first cavity, configured to reduce the temperature in the first cavity by air cooling;

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

The airflow driver is configured to form a cooling airflow in the first cavity to flow through the electronic device in the first cavity and the first radiator.

In some embodiments, the first cavity is disposed along the peripheral wall of the cabinet and close to the backboard of the cabinet, wherein at least a part of the projection of the first junction box toward the side wall of the cabinet is located at the front side of the first cavity.

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 provided by 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.

For the above-mentioned HVAC equipment, the first junction box is arranged outside the cabinet and on the side of the cabinet, the second junction box is arranged outside the cabinet and on the back of the cabinet, and the layout of the junction boxes is reasonable, which is convenient for customers to install.

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.

Reference numerals: frequency conversion cabinet 100, cabinet body 10, opening 12, back plate 14, side plate 16, door body 18, first mounting plate 101, second mounting plate 102, third mounting plate 103, fourth mounting plate 104, accommodating cavity 20, first cavity 201, first radiator 2011, second cavity 202, second radiator 2021, airflow driver 22, electronic device 30, first junction box 40, second junction box 42, metal bar 44 , a positioning block 46 , a first input bank 48 , a second input bank 50 , and a circuit breaker 52 .

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 the description of the present utility model, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" etc. are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description The present invention and simplified description do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the present invention. 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 specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. 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 specified and limited, the first feature being "on" or "under" the second feature may include that the first and second features are in direct contact, and may also include that the first and second features are not in direct contact but are in contact with 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. 1-5 , the frequency conversion cabinet 100 according to the embodiment of the present invention includes: a cabinet body 10 , a first junction box 40 and a second junction box 42 . Wherein the cabinet 10 is provided with an accommodating cavity 20, and the accommodating cavity 20 is configured to accommodate the electronic device 30; the first junction box 40 is arranged on the outside of the cabinet 10, and is positioned on the side of the cabinet 10; the second junction box 42 is arranged on the outside of the cabinet 10, and is positioned on the back of the cabinet 10.

In the frequency conversion cabinet 100 described above, the first junction box 40 is arranged outside the cabinet 10 and is located on the side of the cabinet 10, and the second junction box 42 is arranged outside the cabinet 10 and is located on the back of the cabinet 10. The layout of the junction boxes is reasonable and convenient for customers to install.

Specifically, referring to Fig. 2-Fig. 4, the front side of the accommodating chamber 20 in the cabinet body 10 has an opening 12, and the rear side has a back plate 14. The direction of the opening 12 of the cabinet body 10 shown in the figure is in the front and back direction of the cabinet body 10, 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. The first junction box 40 and the second junction box 42 are located outside the cabinet 10 , wherein the first junction box 40 is located at the side of the cabinet 10 , and the second junction box 42 is located at the back of the cabinet 10 . In some embodiments, the first junction box 40 is located on the left side of the cabinet body 10 , and the second junction box 42 is located on the rear side of the cabinet body 10 . In this way, the layout of the junction box is reasonable, which is convenient for customers to install.

The electronic device 30 in the accommodation chamber 20 may include an electronic control board, a 2G module, a display screen, an emergency stop button, a control board, a guide vane fan board, a control board, a terminal block, a smart telegraph, a transformer, a circuit breaker 52, a 24V power board, a drive board, a control board, a 380V power board, an APF, a filter board, a snubber resistor, a capacitor, an IGBT, a transformer, a snubber resistor, a fan, an evaporator, a reactor, a transformer, and a diode. . Wherein, the electronic device 30 may include absorption resistors, capacitors, IGBTs, transformers, snubber resistors, fans, evaporators, reactors, transformers, and diodes. The electronic device 30 can 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, a terminal block, a smart telegraph, a mutual inductor, a circuit breaker 52, a 24V power board, a drive board, a control board, a 380V power board, an APF, and a 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 the present embodiment, there are a plurality of mounting plates in the cabinet body 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 front side of the back plate 14 respectively, and there is a gap between the first mounting plate 101 , the second mounting plate 102 , the third mounting plate 103 and the fourth mounting plate 104 and the back plate 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. 1 and 2 , one of the first junction box 40 and the second junction box 42 is used for power input, and the other is used for power output.

In this way, the work of power input and power output of the first junction box 40 and the second junction box 42 can be completed.

Specifically, one of the first junction box 40 and the second junction box 42 is used for power input, and the other is used for power output. In some embodiments, the first junction box 40 is located on the left side of the cabinet body 10, the first junction box 40 is used for power input, the second junction box 42 is located at the rear side of the cabinet body 10, and the second junction box 42 is used for power output. In other embodiments, the first junction box 40 is located on the rear side of the cabinet 10, the first junction box 40 is used for power input, the second junction box 42 is located on the left side of the cabinet 10, and the second junction box 42 is used for power output.

In some embodiments, please refer to FIG. 5 , the frequency conversion cabinet 100 also includes a metal bar 44, the metal bar 44 is electrically connected to the electronic device 30 in the accommodating cavity 20, and extends into the first junction box 40 and the second junction box 42 for power input or power output.

In this way, it is convenient for the metal row 44 to realize power input or power output.

Specifically, the metal row 44 is electrically connected to the electronic device 30 in the accommodating cavity 20. In some embodiments, the metal row 44 is connected to the circuit breaker 52 in the accommodating cavity 20, and extends into the first junction box 40 and the second junction box 42 for power input or power output.

In some embodiments, referring to FIG. 5 , at least one of the first junction box 40 and the second junction box 42 is also provided with a positioning block 46, and the part of the metal row 44 protruding into the junction box corresponds to the positioning block 46. The positioning block 46 cooperates with the metal row 44 to position the cable joint.

In this way, the positioning block 46 is provided so that the positioning block 46 cooperates with the metal bar 44 to position the cable joint.

Specifically, in some embodiments, the first junction box 40 is provided with a positioning block 46, the positioning block 46 is used for positioning the cable joint, the part of the metal bar 44 extending into the junction box corresponds to the positioning block 46, and the positioning block 46 cooperates with the metal bar 44 to position the cable joint.

In some embodiments, please refer to FIG. 5 , the first junction box 40 is configured for power input, the metal row 44 includes a first input row 48 and a second input row 50, both the first input row 48 and the second input row 50 protrude into the first junction box 40, and the first input row 48 and the second input row 50 are spaced apart from each other in the first junction box 40, and the first input row 48 and the second input row 50 are suitable for connecting power sources independently.

In this way, it is convenient for the first input bank 48 and the second input bank 50 to realize power input or power output.

Specifically, the metal row 44 includes a first input row 48 and a second input row 50 , the first input row 48 is located above the cabinet 10 , and the second input row 50 is located below the cabinet 10 . Wherein, the first input row 48 may include three copper rods arranged at intervals, and the second input row 50 may also include three copper bars arranged at intervals. Both the first input row 48 and the second input row 50 extend into the first junction box 40, and the parts of the first input row 48 and the second input row 50 in the first junction box 40 are arranged at intervals, that is, more copper rods are arranged at intervals to facilitate the connection of the electronic device 30. The first input bank 48 and the second input bank 50 are adapted to be independently connected to power sources, the first junction box 40 is configured for power input, and the second junction box 42 may be used for power output.

In some embodiments, please refer to FIG. 5 , one of the first input bank 48 and the second input bank 50 is used for connecting to an AC grid, and the other is used for connecting to a backup power source.

In this way, it is convenient for the first input bank 48 and the second input bank 50 to realize power input or power output.

Specifically, one of the first input bank 48 and the second input bank 50 is used for connecting to an AC grid, and the other is used for connecting to a backup power source. In some embodiments, the first input bank 48 is used to connect to the AC grid, and the second input bank 50 is used to connect to the backup power supply; in other embodiments, the first input bank 48 is used to connect to the backup power supply, and the second input bank 50 is used to connect to the AC grid.

In some embodiments, please refer to FIG. 3 , a circuit breaker 52 is disposed in the accommodating chamber 20 , the input end of the circuit breaker 52 is connected to the first input bank 48 , and the output end of the circuit breaker 52 is connected to the second input bank 50 .

In this way, the function of the circuit breaker 52 to protect the circuit can be realized.

It can be seen from the above that the electronic devices 30 in the present invention can be arranged in layers along the depth direction of the cabinet body 10 , or can be arranged side by side on the backboard 14 of the cabinet body 10 . Specifically, as shown in FIGS. 1 and 2 , the first junction box 40 is arranged on the side wall of the cabinet body 10 away from the accommodating cavity 20 , and the circuit breaker 52 is arranged close to the junction box to facilitate wiring of the circuit breaker 52 , and the circuit breaker 52 is arranged on the current input side of the frequency conversion cabinet 100 to protect the circuit.

In some embodiments of the present utility model, a first chamber 201 is also provided in the accommodation chamber 20, the first chamber 201 is configured as a ring around the second chamber 202, and is close to the back plate 14 of the accommodation chamber 20, the circuit breaker 52 is arranged in the second chamber 202, and at least a part of the circuit breaker 52 is located in a different layer from the first chamber 201 in the thickness direction of the cabinet body 10, and the circuit breaker 52 is opposite to the first junction box 40, so as to electrically connect the circuit breaker 52 and the first junction box 40 through the metal bar 44 The first junction box 40 .

Specifically, referring to FIG. 4 , the first cavity 201 is configured as an annular cavity extending in the direction of the cabinet 10, and the first cavity 201 is disposed close to the back plate 14 of the cabinet 10, and the front end of the circuit breaker 52 protrudes from the first cavity 201. The first cavity 201 can avoid the circuit of the circuit breaker 52, so that the circuit of the circuit breaker 52 can avoid the first cavity 201 and connect to the first junction box 40.

Further, the circuit of the circuit breaker 52 can be electrically connected to the junction box through the metal row 44, and the metal row 44 can improve the effect of the electrical connection between the circuit breaker 52 and the first junction box 40, wherein the metal row 44 can be configured as a copper row to improve the conductive effect of the metal row 44.

In some embodiments, please refer to FIG. 1 and FIG. 4 , the accommodating chamber 20 includes a first chamber 201 and a second chamber 202 , and the frequency conversion cabinet 100 further includes a first radiator 2011 , a second radiator 2021 and an airflow driver 22 . Wherein the first heat sink is arranged in the first cavity 201, and is configured to reduce the temperature in the first cavity 201 through air cooling; the second radiator 2021 is configured to dissipate heat for the electronic device 30 in the second cavity 202 through heat conduction; the airflow driver 22 is configured to form a heat dissipation airflow flowing through the electronic device 30 in the first cavity 201 and the first heat sink 2011 in the first cavity 201.

In this way, heat dissipation of the electronic device 30 in the first cavity 201 and the second cavity 202 is facilitated, and the operation stability and service life of the electronic device 30 in the first cavity 201 and the second cavity 202 can be improved.

Specifically, a first heat sink 2011 can be provided in the first chamber 201, and the first heat sink 2011 can provide cooling capacity. When the heat in the first chamber 201 is reduced by air cooling, the first heat sink 2011 can take away the heat in the wind and dissipate heat to the airflow in time, so that the airflow can better dissipate heat with the electronic device 30 in the first chamber 201, and effectively improve the air cooling effect in the first chamber 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 order to promote the flow of air in the first chamber 201, the cabinet 10 may further include an airflow driver 22, the airflow driver 22 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 configured to flow through the electronic device 30 in the first chamber 201 and the first radiator 2011. When the airflow flows through the first radiator 2011, the heat in the airflow can be exchanged to the first radiator 2011 to reduce the temperature of the airflow, and the cooling capacity of the first radiator 2011 can be absorbed to dissipate heat in the first cavity 201; Heat dissipation of the internal electronic device 30 . 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 addition, the accommodating chamber 20 may further include a second chamber 202 , and the heat dissipation method of the electronic device 30 in the second chamber 202 may be different from that of the electronic device 30 in the first chamber 201 . For example, 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.

According to the frequency conversion cabinet 100 of the embodiment of the present invention, a first cavity 201 and a second cavity 202 are provided. The first cavity 201 can use air cooling to exchange heat, and the first radiator 2011 can be used to reduce the temperature in the first cavity 201, thereby reducing the temperature of the electronic device 30 in the first cavity 201; , can reduce the heat conduction between different electronic devices 30, improve the stability of the operation of each electronic device 30, at the same time, through the isolation of the first chamber 201 and the second chamber 202, can reduce the interference between different electronic devices 30, improve the stability of the frequency conversion cabinet 100, and reduce the failure rate.

In some embodiments of the present invention, the first cavity 201 is a closed cavity, which forms a closed flow channel in the cabinet body 10, and the combination of the airflow driver 22 and the first heat sink 2011 can be used to realize the heat dissipation of the electronic device 30 in the first cavity 201. And the second cavity 202 can be set to open form, for example, the space outside the first cavity 201 in the cabinet 10 is set to the second cavity 202, because the second cavity 202 is an open space at this moment, can facilitate the installation and maintenance of the electronic device 30 in the second cavity 202. 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 installation and enclosure of the electronic device 30 in the second chamber 202, and can conveniently check the operation status of the frequency conversion cabinet 100 through the electronic device 30 in the second chamber 202. At this time, the first chamber 201 is in a closed state, which will not affect the space in the second chamber 202, and the second chamber 202 can be maintained at a low humidity. , in an environment with less dust, the heat dissipation effect and operational stability will be 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 effect of natural convection or other methods, the temperature in the second chamber 202 can be relatively uniform everywhere, and the heat dissipation of the electronic device 30 in the second chamber 202 can also be realized to a certain extent.

In addition, in the second chamber 202 of the present invention, no airflow driving structure such as a fan may be provided, so that the electronic device 30 in the second chamber 202 will operate under the noise of the bottom, effectively reducing the noise of the frequency conversion cabinet 100, and can avoid introducing external high-humidity air, dust-laden airflow, etc. into the second chamber 202, so as to prolong the service life of the electronic device 30 in the second chamber 202; The sufficient heat exchange of 30 maintains the temperature environment of the electronic device 30 in the second cavity 202 , and improves the operation stability and service life of the electronic device 30 in the second cavity 202 .

The first cavity 201 in the present utility model can be set as the heat dissipation channel of the form such as straight line, curved line, broken line, etc., through the driving effect of the airflow drive part 22, utilizes the first heat sink 2011 to take away the heat, for example, the heat dissipation airflow can pass in from one end of the first cavity 201, and flow out from the second end of the first cavity 201, of course, at this time may have adverse effects on the surrounding environment, and will also cause the dusty airflow in the external environment to enter the first cavity 201, affecting the operation in the first cavity 201 environment.

In addition, the utility model is provided with a first heat sink 2011 to take away the heat in the first cavity 201. When the cooling air flow in the first cavity 201 circulates, the first heat sink 2011 can be used to take away the heat of the electronic device 30 in the second cavity 202. Therefore, in order to reduce the impact on the surrounding environment during the heat dissipation process in the present invention, the first chamber 201 can be configured as an annular chamber, and the airflow in the first chamber 201 is suitable for circulating under the driving action of the airflow driving member 22 to dissipate heat. Through the circulation of the air flow, the temperature in the first chamber 201 can be effectively reduced, heat dissipation to the electronic device 30 in the first chamber 201 can be realized, and a better temperature environment can be provided for the operation of the electronic device 30 in the first chamber 201. At the same time, the influence of the heat in the first chamber 201 on the surrounding environment can be reduced, especially the influence of the heat in the first chamber 201 on the electronic device 30 in the second chamber 202 can be reduced, and the stability of the entire frequency conversion cabinet 100 can be improved. In addition, the first heat sink 2011 also has a condensation function, and the first heat sink 2011 can be used to adjust the humidity in the first cavity 201 and optimize the humidity environment of the electronic device 30 in the first cavity 201 .

The first chamber 201 in the utility model can be set as a circular cavity, an elliptical ring, a polygonal ring or other irregularly shaped ring cavity. The first cavity 201 of a specific embodiment of the utility model will be described below with reference to the accompanying drawings.

In some embodiments, please refer to FIG. 3 , the first cavity 201 is arranged along the peripheral wall of the cabinet body 10, and is arranged close to the backboard 14 of the cabinet body 10, wherein at least a part of the projection of the first junction box 40 toward the side wall of the cabinet body 10 is located on the front side of the first cavity 201.

In this way, it is convenient for the electronic device 30 in the first cavity 201 to be inserted into the first junction box 40 .

Specifically, the accommodating chamber 20 is divided into a first chamber 201 and a second chamber 202 , the first chamber 201 is a closed annular chamber disposed along the peripheral wall of the cabinet body 10 , and the first chamber 201 is disposed around the second chamber 202 . The first junction box 40 is located on the left side of the cabinet body 10 , and at least a part of the projection of the first junction box 40 toward the side wall of the cabinet body 10 is located at the front side of the first cavity 201 . In this way, the electronic device 30 in the first chamber 201 can enter the first junction box 40 through the peripheral wall of the cabinet body 10 , so that the electronic device 30 in the first chamber 201 enters the first junction box 40 .

In some embodiments, please refer to FIG. 2 , further comprising: 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 chamber 20 .

Specifically, 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 installation and enclosure of the electronic device 30 in the second chamber 202, and can conveniently check the operation status of the frequency conversion cabinet 100 through the electronic device 30 in the second chamber 202. At this time, the first chamber 201 is in a closed state, which will not affect the space in the second chamber 202, and the second chamber 202 can be maintained at a low humidity. , in an environment with less dust, the heat dissipation effect and operational stability will be 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 effect of natural convection or other methods, the temperature in the second chamber 202 can be relatively uniform everywhere, and the heat dissipation of the electronic device 30 in the second chamber 202 can also be realized to a certain extent.

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 function of the corresponding module.

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 compact; on the other hand, the modules installed on the door body 18 can realize corresponding functions.

The HVAC equipment provided by the embodiment of the 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 .

For the above-mentioned HVAC equipment, the first junction box 40 is arranged outside the cabinet 10 and is located on the side of the cabinet 10, and the second junction box 42 is arranged outside the cabinet 10 and is located on the back of the cabinet 10. The layout of the junction boxes is reasonable, which is convenient for customers to install.

Specifically, for the HVAC equipment including the frequency conversion cabinet 100 in any of the above embodiments, the first junction box 40 in the frequency conversion cabinet 100 is arranged outside the cabinet body 10 and on the side of the cabinet body 10, and the second junction box 42 is arranged outside the cabinet body 10 and is located on the back of the cabinet body 10. The layout of the junction boxes is reasonable and convenient for customers to install.

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 the specific features, structures, materials or characteristics described in conjunction with this embodiment or example 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 embodiments are exemplary and cannot be construed as a limitation of the present invention, and those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims (13)

1. A frequency conversion cabinet, characterized in that, comprising: A cabinet body, the cabinet body is provided with an accommodating cavity, and the accommodating cavity is configured to accommodate electronic devices; a first junction box, the first junction box is located outside the cabinet and on the side of the cabinet; A second junction box, the second junction box is arranged outside the cabinet and at the back of the cabinet. 2. The frequency conversion cabinet according to claim 1, wherein one of the first junction box and the second junction box is used for power input, and the other is used for power output. 3. The frequency conversion cabinet according to claim 2, wherein the frequency conversion cabinet further comprises a metal bar, the metal bar is electrically connected to the electronic device in the accommodating cavity, and extends into the first junction box and the second junction box for power input or power output. 4. The frequency conversion cabinet according to claim 3, wherein at least one of the first junction box and the second junction box is further provided with a positioning block, the part of the metal row protruding into the junction box corresponds to the positioning block, and the positioning block cooperates with the metal row to position the cable joint. 5. The frequency conversion cabinet according to claim 3, wherein the first junction box is configured for power input, the metal row includes a first input row and a second input row, both of the first input row and the second input row extend into the first junction box, and the first input row and the second input row are spaced apart from each other in the first junction box, and the first input row and the second input row are adapted to be independently connected to a power supply. 6. The frequency conversion cabinet according to claim 5, wherein one of the first input bank and the second input bank is used for connecting to an AC power grid, and the other is used for connecting to a backup power supply. 7. The frequency conversion cabinet according to claim 5, wherein a circuit breaker is provided in the accommodating cavity, an input end of the circuit breaker is connected to the first input bank, and an output end of the circuit breaker is connected to the second input bank. 8. The frequency conversion cabinet according to any one of claims 1-7, wherein the accommodating cavity includes a first cavity and a second cavity, and the frequency conversion cabinet further comprises: a first radiator, disposed in the first cavity, configured to reduce the temperature in the first cavity by air cooling; The second heat sink is configured to dissipate heat for the electronic devices in the second cavity through heat conduction; The airflow driver is configured to form a cooling airflow in the first cavity to flow through the electronic device in the first cavity and the first radiator. 9. The frequency conversion cabinet according to claim 8, wherein the first cavity is arranged along the peripheral wall of the cabinet and is arranged close to the backboard of the cabinet, wherein at least a part of the projection of the first junction box toward the side wall of the cabinet is located on the front side of the first cavity. 10. The frequency conversion cabinet according to any one of claims 1-7, further comprising: 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. 11. The frequency conversion cabinet according to claim 10, 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. 12. A heating and ventilation equipment, characterized in that it comprises: The frequency conversion cabinet according to any one of claims 1-11; An air-conditioning unit, the air-conditioning unit is connected with the frequency conversion cabinet. 13. The HVAC equipment according to claim 12, 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.