CN219228250U - Variable frequency cabinet, compressor and heating ventilation equipment - Google Patents

Abstract

The utility model discloses a variable frequency cabinet, a compressor and heating and ventilation equipment, wherein the variable frequency cabinet comprises: the electronic device comprises a cabinet body, wherein the cabinet body is provided with a containing cavity, the containing cavity is configured to contain the electronic device, and the containing cavity comprises a first cavity and a second cavity; a first heat sink disposed within the first chamber and configured to reduce a temperature within the first chamber by way of gas flow; a second heat sink configured to dissipate heat by thermal conduction from the electronic device within the second cavity; and an airflow driving member configured to form a heat radiation airflow flowing through the electronic device in the first cavity and the first heat sink in the first cavity. According to the frequency conversion cabinet provided by the embodiment of the utility model, the electronic device is placed by the first cavity and the second cavity, and the electronic device is radiated by the first radiator and the second radiator, so that the radiating effect of the frequency conversion cabinet can be improved, and the noise of the frequency conversion cabinet can be reduced.

Description

Variable frequency cabinet, compressor and heating ventilation equipment

Technical Field

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

Background

The variable frequency cabinet control cabinet, which is called variable frequency cabinet for short, can be widely applied to various medium-voltage motor equipment such as pumps, fans, compressors, rolling mills, injection molding machines, belt conveyors and the like in metallurgy, chemical industry, petroleum, water supply, mines, building materials, motor industry and the like.

The frequency conversion cabinet comprises a frequency conversion cabinet power element, a frequency conversion cabinet control element and a frequency conversion cabinet control element, when the frequency conversion cabinet works, the elements can generate heat, and if the heat cannot be effectively discharged, the working environment of the elements can be directly influenced, and the service life of the elements is further influenced.

In addition, in the related art, the air outlet of the variable frequency cabinet is usually disposed at the top or the upper part of the front wall of the variable frequency cabinet, when the variable frequency cabinet is placed in the air compressor, if the air outlet is located at the top of the variable frequency cabinet, since the air outlet of the variable frequency cabinet is very close to the air inlet of the air compressor, hot air from the air outlet of the variable frequency cabinet is still sucked by the air compressor, which will cause the internal temperature of the air compressor to be too high, and affect the performance and stability thereof. If the air outlet is positioned on the upper part of the front wall of the frequency conversion cabinet, the air outlet of the frequency conversion cabinet is required to use a filter grid with a certain protection level, so that hot air at the air outlet of the frequency conversion cabinet is discharged downwards obliquely, and hot air from the air outlet of the frequency conversion cabinet is still sucked by the air inlet of the frequency conversion cabinet positioned on the lower part of the front wall, so that the temperature inside the frequency conversion cabinet is overhigh, and the performance and the stability of the frequency conversion cabinet are affected.

Disclosure of Invention

The utility model aims to provide a frequency conversion cabinet which can improve the heat dissipation effect of the frequency conversion cabinet.

Another object of the present utility model is to propose a compressor comprising a variable frequency cabinet as described above.

An object of the utility model is to provide a heating and ventilation device comprising a compressor or a variable frequency cabinet as described above.

According to an embodiment of the utility model, a variable frequency cabinet comprises: the electronic device comprises a cabinet body, wherein the cabinet body is provided with a containing cavity, the containing cavity is configured to contain the electronic device, and the containing cavity comprises a first cavity and a second cavity; a first heat sink disposed within the first chamber and configured to reduce a temperature within the first chamber by way of gas flow; a second heat sink configured to dissipate heat by thermal conduction from the electronic device within the second cavity; and an airflow driving member configured to form a heat radiation airflow flowing through the electronic device in the first cavity and the first heat sink in the first cavity.

According to the frequency conversion cabinet provided by the embodiment of the utility model, the electronic device is placed by the first cavity and the second cavity, and the electronic device is radiated by the first radiator and the second radiator, so that the radiating effect of the frequency conversion cabinet can be improved, and the noise of the frequency conversion cabinet can be reduced.

In addition, the frequency conversion cabinet according to the embodiment of the utility model can also have the following additional technical characteristics:

optionally, the first cavity is configured as an annular cavity, and the air flow in the first cavity is suitable for circulating to dissipate heat under the driving action of the air flow driving piece.

Optionally, the first chamber includes a first flow passage located at a bottom of the cabinet and configured to direct a flow of heat dissipating air from a first side to a second side of the cabinet.

Optionally, the first heat sink is disposed in the first flow channel.

Optionally, a drain port is provided on the bottom wall of the first flow channel to drain the condensed water in the first cavity.

Optionally, the first chamber further includes a second flow channel located on a second side of the cabinet, and directs the heat dissipation airflow from the bottom of the cabinet to the upper portion of the cabinet.

Optionally, the flow channel wall of the first flow channel includes a first flow guide plate adjacent to the second flow channel, the flow channel wall of the second flow channel includes a second flow guide plate adjacent to the first flow channel, the first flow guide plate and the second flow guide plate meet along a direction from the first side toward the second side, and in a direction from the first side toward the second side, the first flow guide plate is inclined downward with respect to the horizontal direction, and the second flow guide plate is inclined upward with respect to the horizontal direction.

Optionally, the first chamber further includes a third flow channel disposed at an upper portion of the cabinet, the third flow channel directing the cooling airflow from the second side of the cabinet to the first side.

Optionally, the first cavity further includes a fourth flow channel disposed on the first side, the fourth flow channel guiding the heat dissipation airflow to flow from above the cabinet to the bottom of the cabinet.

Optionally, the first cavity is configured as an annulus within the cabinet extending along a peripheral wall of the cabinet.

Optionally, the first cavity is configured as a closed annular cavity and the second cavity is spaced from the first cavity.

Optionally, the first cavity is disposed in the cabinet body proximate to a back plate of the cabinet body.

Optionally, the variable frequency cabinet further comprises a door body, wherein the door body is connected with the cabinet body and is configured to open and close the accommodating cavity, and the door body seals the second cavity when closing the accommodating cavity.

Optionally, the second radiator is a parallel flow radiator; and/or the first radiator is an evaporator.

Optionally, the electronic device in the first cavity includes a first electronic device and a second electronic device, the heating power of the first electronic device is smaller than the heating power of the second electronic device, and the first electronic device is upstream of the second electronic device along the flow direction of the heat dissipation airflow.

Optionally, the electronic device includes a third electronic device, the third electronic device is disposed in the second cavity, and the second heat spreader and the third electronic device are stacked to dissipate heat of the third electronic device.

Optionally, the second heat sink is at least partially disposed within the second cavity; or, the second radiator is arranged on the back of the cabinet body and corresponds to the position of at least part of electronic devices in the second cavity.

Optionally, a circuit breaker, a reactor, a capacitor, an IGBT and a diode are configured in the accommodating cavity, the circuit breaker, the reactor, the capacitor, the IGBT and the diode are electrically connected, and at least one of the circuit breaker, the reactor, the capacitor, the IGBT and the diode is disposed in the first cavity, and at least one of the circuit breaker, the reactor, the capacitor, the IGBT and the diode is disposed in the second cavity.

The compressor according to the embodiment of the utility model comprises the frequency conversion cabinet.

The heating and ventilation equipment provided by the embodiment of the utility model comprises the frequency conversion cabinet; or a compressor according to the foregoing.

The utility model provides a variable frequency cabinet, a compressor and heating and ventilation equipment, wherein a first cavity and a second cavity are arranged in the variable frequency cabinet, heat is radiated in different modes, heat among devices in the variable frequency cabinet can be radiated according to heating power of different devices, heat transfer among the devices can be reduced, the heat radiation effect is affected, the movable isolation effect can be achieved, the anti-interference purpose is achieved, and in addition, in the compressor and the heating and ventilation equipment with the variable frequency cabinet, the variable frequency cabinet has higher stability, the running stability of the compressor can be improved, the failure rate of the heating and ventilation equipment is reduced, and the working efficiency of the heating and ventilation equipment is improved.

Drawings

Fig. 1 is a schematic diagram of a variable frequency cabinet according to one embodiment of the utility model.

Fig. 2 is a schematic diagram of a variable frequency cabinet according to one embodiment of the utility model.

Fig. 3 is a schematic diagram of a variable frequency cabinet according to one embodiment of the utility model.

Fig. 4 is a schematic diagram of a variable frequency cabinet according to one embodiment of the utility model.

Fig. 5 is a schematic diagram of a variable frequency cabinet according to one embodiment of the utility model.

Fig. 6 is a schematic diagram of a variable frequency cabinet according to one embodiment of the utility model.

Fig. 7 is a schematic diagram of a variable frequency cabinet according to one embodiment of the utility model.

Fig. 8 is a schematic diagram of a variable frequency cabinet according to one embodiment of the utility model.

Fig. 9 is a schematic diagram of a variable frequency cabinet according to one embodiment of the utility model.

Reference numerals: 100. a variable frequency cabinet; 10. a cabinet body; 101. a receiving chamber; 102. a first chamber; 1021. a first flow passage; 1022. a second flow passage; 1023. a third flow passage; 1024. a fourth flow passage; 103. a second chamber; 11. a first heat sink; 12. a second heat sink; 121. a first deflector; 122. a second deflector; 13. a junction box; 14. an air flow driving member; 141. a first fan; 142. a second fan; 20. a door body; 31. a circuit breaker; 32. a reactor; 33. a capacitor; 34. an IGBT; 35. a diode; 36. a transformer; 37. a contactor.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

Referring to fig. 1 to 9, a variable frequency cabinet 100 according to an embodiment of the present utility model includes a cabinet body 10, where the cabinet body 10 is provided with a containing cavity 101, the containing cavity 101 is configured to contain an electronic device, the containing cavity 101 includes a first cavity 102, and the first cavity 102 may be configured to dissipate heat in a gas circulation manner, in other words, through circulation of air flow in the first cavity 102, heat on the electronic device in the first cavity 102 is taken away, so as to achieve a heat dissipation purpose of the electronic device.

The first radiator 11 may be disposed in the first cavity 102, the first radiator 11 may provide cooling capacity, when heat in the first cavity 102 is reduced by means of air circulation, the first radiator 11 may take away heat in wind and radiate air flow in time, so that the air flow better radiates heat with electronic devices in the first cavity 102, and the radiating effect in the first cavity 102 is effectively improved. In other words, the heat exchange between the first heat sink 11 and the electronic device in the first chamber 102 is realized by the air flow, and the temperature in the first chamber 102 is reduced by the air flow.

To facilitate airflow within the first chamber 102, the cabinet 10 may further include an airflow driver 14, the airflow driver 14 may be configured to drive airflow within the first chamber 102 to form a heat dissipating airflow, which may be configured to flow through the electronics within the first chamber 102 and the first heat sink 11. When the air flow passes through the first radiator 11, heat in the air flow can be exchanged to the first radiator 11 so as to reduce the temperature of the air flow, and cold energy of the first heat exchanger can be absorbed for radiating the first cavity 102; when the air flow passes through the electronic devices in the first cavity 102, the cold energy in the air flow can be exchanged to the electronic devices in the first cavity 102, and the heat of the electronic devices in the first cavity 102 is taken away, so that the heat dissipation of the electronic devices in the first cavity 102 is realized. That is, heat of the electronic device in the first cavity 102 is sent to the first heat sink 11, and heat dissipation of the electronic device in the first cavity 102 is achieved.

In addition, the accommodating cavity 101 may further include a second cavity 103, and a heat dissipation manner of the electronic device in the second cavity 103 may be different from a heat dissipation manner of the electronic device in the first cavity 102. For example, a second heat sink 12 corresponding to the second cavity 103 may be provided, and the second heat sink 12 may be arranged to dissipate heat by heat conduction from the electronic device within the second cavity 103. Thereby effecting heat dissipation from the electronic device within the second cavity 103. Through heat conduction, the heat dissipation efficiency and effect can be improved, and the electronic device with higher working temperature can be quickly dissipated.

According to the variable frequency cabinet 100 provided by the embodiment of the utility model, the first cavity 102 and the second cavity 103 are arranged, the first cavity 102 can exchange heat in a gas circulation mode, and the temperature in the first cavity 102 is set by using the first radiator 11, so that the temperature of an electronic device in the first cavity 102 is set; and the temperature of the electronic devices in the second cavity 103 can be reduced by using the second radiator 12, different modes are adopted for radiating, different types of electronic devices can be radiated in a targeted manner, the heat conduction between different electronic devices can be reduced, the running stability of each electronic device is improved, meanwhile, the interference between different electronic devices can be reduced through the isolation of the first cavity 102 and the second cavity 103, the stability of the frequency conversion cabinet 100 is improved, and the fault rate is reduced.

As shown in fig. 1, a fourth electronic device a and a fifth electronic device B are disposed in the accommodating cavity 101, the fourth electronic device a is disposed in the first cavity 102 and adapted to dissipate heat through the first heat sink 11, and the fifth electronic device B is disposed in the second cavity 103 and adapted to dissipate heat through the second heat sink 12.

In some embodiments of the present utility model, the first chamber 102 is a closed chamber, which forms a closed flow path in the cabinet 10, and the combination of the airflow driving member 14 and the first heat sink 11 may be used to dissipate heat from the electronic device in the first chamber 102. While the second cavity 103 may be provided in an open form, for example, a space outside the first cavity 102 in the cabinet 10 is provided as the second cavity 103, and at this time, since the second cavity 103 is an open space, installation and maintenance of the electronic components in the second cavity 103 can be facilitated. In addition, a door body 20 may be installed on the cabinet body 10, and the cabinet body 10 may be opened and closed by the door body 20. Specifically, in some embodiments, the door body 20 may be used to open and close the second cavity 103, when the door body 20 is opened, the second cavity 103 is opened, so that installation and enclosure of electronic devices in the second cavity 103 can be facilitated, and the operation state of the variable frequency cabinet 100 can be checked by the electronic devices in the second cavity 103 conveniently, at this time, the first cavity 102 is in a closed state, so that the space in the second cavity 103 is not affected, the second cavity 103 can be maintained in an environment with low humidity and less dust, and the heat dissipation effect, the operation stability and the like of the second cavity 103 are relatively high; when the door 20 is closed, the second cavity 103 is closed, and at this time, a relatively closed environment is formed in the second cavity 103, and at this time, under the action of natural convection or other modes, the temperature of each place in the second cavity 103 can be relatively uniform, and heat dissipation of electronic devices in the second cavity 103 can be realized to a certain extent.

In addition, in the utility model, the second cavity 103 may not be provided with an air flow driving structure such as a fan, so that the electronic devices in the second cavity 103 can operate under lower noise, thereby effectively reducing the noise of the frequency conversion cabinet 100, and avoiding introducing external high humidity air, dust-containing air flow and the like into the second cavity 103 so as to prolong the service life of the electronic devices in the second cavity 103; of course, an air flow driving structure such as a fan may be disposed in the second cavity 103, so that sufficient heat exchange of the electronic devices in the second cavity 103 may be achieved, the temperature environment of the electronic devices in the second cavity 103 may be maintained, and the operation stability and service life of the electronic devices in the second cavity 103 may be improved.

The first cavity 102 in the present utility model may be configured as a linear, curved, or folded heat dissipation channel, and the heat is taken away by the first heat sink 11 under the driving action of the airflow driving member 14, for example, the heat dissipation airflow may be introduced from one end of the first cavity 102 and flow out from the second end of the first cavity 102, which may adversely affect the surrounding environment, and may also cause dust-containing airflow in the external environment to enter the first cavity 102, thereby affecting the operation environment in the first cavity 102.

In addition, in the present utility model, the first heat sink 11 is provided to remove heat in the first cavity 102, and when the heat dissipation airflow in the first cavity 102 circulates, the first heat sink 11 may be used to remove heat of the electronic device in the second cavity 103. Therefore, in order to reduce the influence on the surrounding environment during the heat dissipation process, the first cavity 102 may be configured as an annular cavity, and the air flow in the first cavity 102 is adapted to circulate to dissipate heat under the driving action of the air flow driving member 14. Through the circulation of the air flow, the temperature in the first cavity 102 can be effectively reduced, the heat dissipation of the electronic devices in the first cavity 102 is realized, a better temperature environment is provided for the operation of the electronic devices in the first cavity 102, meanwhile, the influence of the heat in the first cavity 102 on the surrounding environment can be reduced, particularly, the influence of the heat in the first cavity 102 on the electronic devices in the second cavity 103 can be reduced, and the stability of the whole frequency conversion cabinet 100 is improved. In addition, the first radiator 11 also has a condensation function, so that the humidity in the first cavity 102 can be regulated by the first radiator 11, and the humidity environment of the electronic device in the first cavity 102 can be optimized.

The first chamber 102 of the present utility model may be provided as a circular ring-shaped, elliptical ring-shaped, polygonal ring-shaped, or other irregularly shaped annular chamber, and the first chamber 102 of one embodiment of the present utility model is described below with reference to the accompanying drawings.

In some embodiments of the utility model, as shown in fig. 7, the first chamber 102 may include a first flow passage 1021, the first flow passage 1021 being located at the bottom of the cabinet 10 and configured to direct the flow of heat dissipating air from the first side to the second side of the cabinet 10. Referring to fig. 7, the first flow channel 1021 is disposed at the bottom of the cabinet 10 and extends along a left-to-right direction to guide the heat dissipation air flow from the left side of the bottom of the cabinet 10 to the right side of the cabinet 10, so as to achieve heat dissipation to the bottom of the cabinet 10. Meanwhile, if condensed water is generated in the first chamber 102, the condensed water will flow to the first flow passage 1021, accumulate at the bottom of the first flow passage 1021, or be guided out through a guiding structure arranged in the first flow passage 1021.

In the circulating process of the air flow in the first cavity 102, the temperature of the position of the first radiator 11 is low, so that condensation is easy to generate at the position of the first radiator 11, and condensate water is generated, therefore, the first radiator 11 is arranged in the first flow passage 1021, when the condensation is generated on the first radiator 11, the condensation can flow to the bottom of the cabinet 10 more quickly, the influence of the condensate water and the like on other electronic devices caused by the flow in the first cavity 102 is avoided, and the stability of the frequency conversion cabinet 100 is improved.

In the utility model, the drain hole is arranged on the bottom wall of the first flow passage 1021, and after the condensed water is generated in the first cavity 102, the condensed water can be drained through the drain hole, so that the effective drainage of the condensed water in the first cavity 102 can be realized, and the running stability and safety of electronic devices in the first cavity 102 are improved. In addition, the first chamber 102 in the present utility model may be provided in a closed flow channel, and since the inner space of the first chamber 102 is relatively closed, the external dust-containing air flow, high humidity air flow, etc. are difficult to enter into the first chamber 102, and the first radiator 11 provided in the first chamber 102 may have a certain condensation capacity, the humidity in the first chamber 102 may be effectively reduced by the cooperation of the exhaust port and the first radiator 11, and the stable operation of each component in the first chamber 102 may be maintained.

Of course, the bottom of the first cavity 102 of the present utility model may not be provided with a drain, and when the condensed water is generated in the first cavity 102, the condensed water may be stored in the first cavity 102, and due to the arrangement of the first radiator 11, the humidity in the first cavity 102 may be effectively reduced, and the condensed water stored in the bottom of the first cavity 102 may play a role in maintaining the humidity in the first cavity 102, so as to avoid excessively low humidity in the first cavity 102.

In some embodiments of the utility model, the first chamber 102 further includes a second flow passage 1022, the second flow passage 1022 being located on a second side of the cabinet 10, for directing a flow of heat dissipating air from the bottom of the cabinet 10 to the upper portion of the cabinet 10. Referring to fig. 7, the second flow passage 1022 is provided at the right side of the cabinet 10 and extends in the up-down direction, and the lower end of the second flow passage 1022 communicates with the right end of the first flow passage 1021. The heat dissipation air in the first flow passage 1021 can be sent to the upper part of the cabinet 10 through the second flow passage 1022 to realize heat dissipation of the electronic devices on the upper part of the cabinet 10, wherein the electronic devices can be arranged in the second flow passage 1022, so that the heat dissipation air can be dissipated by utilizing the heat dissipation air flow passing through the second flow passage 1022; the second flow passage 1022 may also be used only as a passage for the conveyance of the air flow. The second flow passage 1022 may be adjusted according to actual use situations.

Wherein when no electronic devices are disposed in the second flow passage 1022, a portion of the electronic devices in the second cavity 103 can be disposed near the second flow passage 1022, so that not only can heat dissipation of the electronic devices be achieved by using the cooling capacity in the second flow passage 1022, but also mutual interference between the electronic devices can be further weakened. In addition, when no electronic device is disposed in the second flow channel 1022, the thickness of the second flow channel 1022 in the left-right direction may be set to be relatively small to optimize the space utilization of the inverter cabinet 100, for example, the thickness of the second flow channel 1022 in the left-right direction may be set to be smaller than the thickness of the first flow channel 1021 in the up-down direction; of course, in combination with the embodiment described below, the thickness of the second flow passage 1022 in the left-right direction may be set smaller than the thickness of the third flow passage 1023 in the up-down direction, and the thickness of the second flow passage 1022 in the left-right direction may also be set smaller than the thickness of the fourth flow passage 1024 in the left-right direction.

In some embodiments of the present utility model, the flow channel wall of the first flow channel 1021 includes a first baffle 121, the first baffle 121 being disposed proximate to the second flow channel 1022 and in a direction from the first side toward the second side, the first baffle 121 being inclined downward relative to the horizontal. Through the first deflector 121, the air flow in the first flow passage 1021 can be guided to the first radiator 11, so that the air flow can exchange heat with the first radiator 11 better, and the air flow can bring the cooling capacity of the first radiator 11 to other positions in the first cavity 102, thereby realizing heat dissipation of electronic devices in the first cavity 102.

The flow passage wall of the second flow passage 1022 in the present utility model is provided to include the second flow guide plate 122, the second flow guide plate 122 is adjacent to the first flow passage 1021, the first flow guide plate and the second flow guide plate are connected in a direction from the first side toward the second side, and the second flow guide plate 122 is inclined upward with respect to the horizontal direction in a direction from the first side toward the second side, because of the flow guide effect of the first flow guide plate 121, resulting in a reduction in the cross-sectional area of the first flow passage 1021 and a relatively large air resistance of the air flow. The flow area of the air flow can be increased through the second flow guide piece, so that the air flow can be conveniently circulated, the noise in the air flow circulation process can be effectively reduced, the stability of the frequency conversion cabinet 100 is improved, and the noise reduction of the frequency conversion cabinet 100 is realized.

In addition, the first chamber 102 further includes a third flow passage 1023 disposed at an upper portion of the cabinet 10, the third flow passage 1023 directing a flow of heat dissipating air from the second side to the first side of the cabinet 10. Referring to fig. 5, a third flow path 1023 is provided at the upper portion of the cabinet 10 and extends in the left-right direction, and the right end of the third flow path 1023 communicates with the upper end of the second flow path 1022. The air flow can be conveniently guided by the guiding function of the third flow passage 1023, wherein the third flow passage 1023 is arranged at the upper part of the cabinet body 10, and the cooled air flow can be guided to the third flow passage 1023 by the guiding function of the first flow passage 1021 and the second flow passage 1022. Electronic devices may be disposed in the third flow path 1023, wherein, because the position of the third flow path 1023 is relatively high, the influence of condensed water and the like may be avoided, and thus, electronic devices may be disposed in the third flow path 1023, and the stability of operation of the electronic devices may be improved.

The diodes 35 may be disposed in the third flow channel 1023, where a plurality of diodes 35 may be disposed in the third flow channel 1023, and the plurality of diodes 35 may be arranged along the airflow direction, for example, a plurality of columns of diodes 35 may be disposed in the third flow channel 1023, and each column includes at least one diode 35, where the plurality of columns of diodes 35 are sequentially arranged at intervals along the airflow direction, and two adjacent columns of diodes 35 may be disposed in a side-by-side manner or in a staggered manner.

Optionally, the first cavity 102 further includes a fourth flow channel 1024 disposed on the first side, and the fourth flow channel 1024 guides the heat dissipating airflow from above the cabinet 10 to the bottom of the cabinet 10. Referring to fig. 7, a fourth flow passage 1024 may be provided at the left side of the cabinet 10 and extend in the up-down direction, and an upper end of the fourth flow passage 1024 communicates with a left end of the third flow passage 1023, and a lower end of the fourth flow passage 1024 communicates with a left end of the first flow passage 1021. By the guiding action of the fourth flow passage 1024, the air flow can be guided to the first flow passage 1021, so that the first flow passage 1021, the second flow passage 1022, the third flow passage 1023, and the fourth flow passage 1024 are combined to form an annular heat exchange passage.

The fourth flow channel 1024 is located at the end of the circulating flow channel, and the cooling capacity of the cooling air flow is limited, so that some electronic devices with lower requirements on temperature can be placed in the fourth flow channel 1024, or in other words, electronic devices with higher working temperature can be placed in the fourth flow channel 1024.

Optionally, the airflow driving member 14 of the present utility model includes a plurality of airflow driving members 14 arranged along the extending direction of the first cavity 102 and configured to drive the airflow in the first cavity 102 to flow through the first heat sink 11 and the electronic device in the first cavity 102.

The airflow driving member 14 may include a first fan 141, where the first fan 141 is disposed at a junction of the first flow passage 1021 and the second flow passage 1022, and the first fan 141 is configured to drive airflow from the first flow passage 1021 to the second flow passage 1022. By providing the first fan 141, the circulation of the air flow can be facilitated, and the influence of the air resistance at the corner between the first flow passage 1021 and the second flow passage 1022 on the circulation of the heat radiation air flow can be reduced.

In addition, both the main suction direction and the main discharge direction of the first fan 141 are inclined toward the second side in the vertically upward direction. The air resistance can be further reduced, the air flow is convenient, and the efficiency and the effect of the heat dissipation wire are improved.

In addition, the airflow driving member 14 may include a second fan 142, where the second fan 142 is disposed at a junction of the third flow path 1023 and the fourth flow path 1024, and the second fan 142 is configured to drive the airflow from the third flow path 1023 to the fourth flow path 1024. And the heat dissipation efficiency and effect are improved.

Optionally, the cabinet 10 of the present utility model is provided with a partition 15, where the partition 15 divides a first cavity 102 and a second cavity 103 in the cabinet 10, the first cavity 102 is adapted for airflow to reduce the temperature in the first cavity 102, the first cavity 102 is separated from the second cavity 103, and the first cavity 102 and the second cavity 103 are respectively used for accommodating electronic devices.

In connection with the foregoing, as shown in fig. 8, in some embodiments of the present utility model, the side plate 151 includes a first plate portion 1511 vertically opposite to the bottom plate of the inverter cabinet 100, and the first chamber 102 includes a first flow passage 1021 between the first plate portion 1511 and the bottom plate, the first flow passage 1021 being located at the bottom of the cabinet 10 and configured to guide a heat dissipation air flow from the first side to the second side of the cabinet 10. The first heat sink 11 is disposed in the first flow passage 1021, and the first plate portion 1511 includes a first deflector 121 near the second side of the cabinet 10, the first deflector 121 being inclined downward with respect to the horizontal direction in a direction from the first side toward the second side, the first deflector 121 being configured to direct the air flow toward the first heat sink 11.

The side plate 151 also includes a second plate portion 1512 opposite the side wall of the second side of the variable frequency cabinet 100, and the first cavity 102 includes a second flow passage 1022 located between the second plate portion 1512 and the side wall of the second side of the variable frequency cabinet 100, the second flow passage 1022 communicating with the first flow passage 1021. The second plate portion 1512 includes a second deflector 122 adjacent to the first flow passage 1021, the second deflector 122 is connected to the first deflector 121 in a direction from the first side toward the second side, and the second deflector 122 is inclined upward with respect to the horizontal direction in the direction from the first side toward the second side.

The side plate 151 also includes a third plate portion 1513 opposite the top wall of the variable frequency cabinet 100, and the first cavity 102 includes a third flow passage 1023 between the third plate portion 1513 and the top wall of the variable frequency cabinet 100, the third flow passage 1023 communicating with the second flow passage 1022.

The side plate 151 further includes a fourth plate portion 1514 opposite the side wall of the first side of the variable frequency cabinet 100, and the first cavity 102 includes a fourth flow passage 1024 between the fourth plate portion 1514 and the side wall of the first side of the variable frequency cabinet 100, the fourth flow passage 1024 communicating with the third flow passage 1023 and the first flow passage 1021.

The partition 15 may further include a front plate 152, the front plate 152 being opposite to the back plate of the cabinet 10 and extending in the circumferential direction of the cabinet 10, and the front plate 152 closing the front side of the first chamber 102. The structure of the partition 15 can be simplified, and the structural strength and stability of the inverter cabinet 100 can be optimized.

Optionally, the first cavity 102 is configured into an annular shape extending along the peripheral wall of the cabinet body 10 in the cabinet body 10, at this time, the first cavity 102 may have a simpler structure and a larger coverage area, the first cavity 102 does not intercept the second cavity 103, and the second cavity 103 may also have a larger space for placing electronic devices, and may facilitate arrangement of the electronic devices in the second cavity 103, thereby facilitating maintenance and use of the variable frequency cabinet 100, optimizing performance of the variable frequency cabinet 100, reducing failure rate of the variable frequency cabinet 100, and improving stability.

Alternatively, the first cavity 102 is configured as a closed annular cavity and the second cavity 103 is spaced from the first cavity 102. The first cavity 102 is arranged in a closed mode, so that the airflow driving part 14 is convenient for driving the airflow, the airflow can be caused to exchange heat with the first radiator 11 fully, the heat dissipation efficiency and effect on the airflow in the first cavity 102 and the electronic devices in the first cavity 102 are effectively improved, the influence of the heat of the electronic devices in the first cavity 102 on the surrounding environment can be avoided, and the influence of the surrounding environment on the electronic devices in the first cavity 102 can also be avoided. At the same time, dust, water, high humidity air, etc. in the external environment can be reduced to affect the stable operation of the electronic devices in the first chamber 102.

Optionally, the first cavity 102 is disposed within the cabinet 10 proximate to a back panel of the cabinet 10. In addition, in combination with the foregoing embodiment, the first cavity 102 is a closed annular cavity, the first cavity 102 is disposed close to the back plate, and after the first cavity 102 is assembled, the electronic device in the second cavity 103 can be installed, at this time, the first cavity 102 does not affect the installation of the component in the second cavity 103, and the installation efficiency of the electronic device in the frequency conversion cabinet 100 can be improved.

Optionally, as shown in fig. 2, the variable frequency cabinet 100 further includes a door body 20, where the door body 20 is connected to the cabinet body 10 and configured to open and close the accommodating cavity 101, and the door body 20 covers the second cavity 103 when closing the accommodating cavity 101. The electronic components in the second chamber 103 may be wired, installed, maintained, commissioned, etc. by opening and closing the door 20. The door body 20 is arranged, so that the electronic device can be conveniently installed, and the frequency conversion cabinet 100 can be conveniently used.

Optionally, the second radiator 12 is a parallel flow radiator, which may have a higher cooling capacity, so as to effectively dissipate heat of the electronic devices in the second cavity 103, so as to maintain stable operation of the electronic devices in the second cavity 103, improve operation stability of the frequency conversion cabinet 100, and reduce a failure rate.

The first radiator 11 is an evaporator. The first radiator 11 may be combined with a compressor, a condenser, etc., and heat dissipation is achieved by using refrigerant phase change, so as to optimize heat dissipation efficiency and effect in the first cavity 102. When the frequency conversion cabinet is used, the first radiator 11 is arranged in the first cavity 102, and the air flow in the first cavity 102 can be utilized to convey the cold energy on the first radiator 11 to other positions in the first cavity 102, so that the heat dissipation of electronic devices in the first cavity 102 is realized, the operation environment of the electronic devices in the first cavity 102 is optimized, and the stability and the service life of the frequency conversion cabinet 100 are improved.

Optionally, the electronics within the first cavity 102 include a first electronics and a second electronics, the first electronics having a heating power that is less than a heating power of the second electronics, the first electronics being upstream of the second electronics along a flow direction of the heat dissipating airflow. In other words, during the circulation of the heat dissipation airflow, the airflow will pass through the first heat sink 11, the first electronic device and the second electronic device, and the heat dissipation airflow passing through the first heat sink 11 will first pass through the first electronic device to take away the heat of the first electronic device, so as to maintain the stable operation of the first electronic device; after the heat dissipation airflow passes through the first electronic device, the temperature rise of the heat dissipation airflow is small, and when the heat dissipation airflow continues to flow through the second electronic device, the heat dissipation airflow still has a good heat dissipation effect so as to facilitate heat dissipation of the second electronic device.

Of course, the heat dissipation airflow passing through the first radiator 11 may first pass through the second electronic device and then pass through the first electronic device, so that the heat dissipation airflow can perform better heat dissipation on the second electronic device, and the heat dissipation effect is improved.

Optionally, the electronic device includes a third electronic device disposed within the second cavity 103, and the second heat sink 12 is stacked with the third electronic device to dissipate heat from the third electronic device. By the lamination mode, the cooling capacity of the second radiator 12 can be quickly transferred to the third electric device, and the heat dissipation effect is better compared with the heat exchange of air flow. Therefore, the electronic device with relatively high heat generating power in the inverter cabinet 100 can generally dissipate heat by using the second heat sink 12, and directly dissipate heat by heat conduction.

Alternatively, the second heat sink 12 may be at least partially disposed within the second cavity 103, enabling stable heat dissipation to be provided to electronic devices stacked or adjacent to the second heat sink 12; meanwhile, the temperature in the second cavity 103 can be reduced through the second radiator 12, so that the purpose of radiating other electronic devices in the second cavity 103 is achieved.

Of course, the installation of the second heat sink 12 in the second cavity 103 is relatively complex, so that the second heat sink 12 may also be disposed on the back of the cabinet 10 and correspond to the location of at least part of the electronic components in the second cavity 103. In this way, the installation of the second radiator 12 is convenient, and the condensate water generated in the operation process of the second radiator 12 can be prevented from flowing into the cabinet body 10, so that the operation stability of the frequency conversion cabinet 100 is improved.

As shown in fig. 1 to 9, in some embodiments of the present utility model, a circuit breaker 31, a reactor 32, a capacitor 33, an IGBT34 and a diode 35 are disposed in a housing cavity 101, where the circuit breaker 31, the reactor 32, the capacitor 33, the IGBT34 and the diode 35 are electrically connected to implement a frequency conversion function, and they may be connected by a metal bar (e.g. a copper bar) or the like, so as to reduce the resistance in the operation process of the frequency conversion cabinet 100, reduce energy consumption, save energy and protect environment.

In addition, at least one of the circuit breaker 31, the reactor 32, the capacitor 33, the IGBT34, and the diode 35 is provided in the first chamber 102, and at least one is provided in the second chamber 103. By disposing these electronic devices in the first cavity 102 or the second cavity 103, effective heat dissipation of each electronic device can be achieved, and the efficiency and effect of heat dissipation can be improved.

Different heat dissipation modes may be provided according to different types of electronic devices, for example, the heat generated during operation of the circuit breaker 31 may be relatively small, and may be disposed in the second cavity 103 at a relatively remote location from the second heat sink 12; the reactor 32 generates relatively high heat during operation, and can be placed in the first cavity 102 to dissipate heat in a gas circulation manner; the heat quantity of the capacitor 33 in the operation process is lower than that of the reactor 32, the capacitor 33 can be placed in the first cavity 102, heat is dissipated in a gas circulation mode, and the first radiator 11, the capacitor 33 and the reactor 32 are sequentially arranged in the flowing direction of heat dissipation airflow, so that good heat dissipation of all components can be realized; the temperature of the IGBT34 and the diode 35 in the operation process is relatively high, and the placement of the IGBT34 and the diode 35 in the first cavity 102 may affect the heat dissipation effect of other components in the first cavity 102, so in the utility model, the IGBT34 and the diode 35 are preferably placed in the second cavity 103, and the second radiator 12 is used for dissipating heat, which not only can improve the heat dissipation effect of the IGBT34 and the diode 35, but also can avoid the heat in the operation process of the IGBT34 and the diode 35 from affecting the stable operation of other electronic devices.

The utility model provides a frequency conversion cabinet 100, wherein a first cavity 102 and a second cavity 103 are arranged in the frequency conversion cabinet 100, heat dissipation is carried out in different modes, heat dissipation can be carried out according to heating power of different devices in the frequency conversion cabinet 100, heat transfer among the devices can be reduced by components, heat dissipation effect is affected, and the purposes of moving isolation effect and anti-interference are achieved.

Referring to fig. 1 to 9, the variable frequency cabinet 100 of the present utility model includes a cabinet body 10 and a door body 20, wherein the cabinet body 10 has a receiving cavity 101 therein, and can be opened and closed by the door body 20, the receiving cavity 101 is divided into a first cavity 102 and a second cavity 103, the first cavity 102 is a closed ring cavity and is disposed along a peripheral wall of the cabinet body 10, the first cavity 102 is disposed around the second cavity 103, the first cavity 102 includes a first flow passage 1021, a second flow passage 1022, a third flow passage 1023, and a fourth flow passage 1024 which are sequentially connected, a first radiator 11 is disposed in the first flow passage 1021, a first fan 141 is disposed between the first flow passage 1021 and the second flow passage 1022, a capacitor 33 is disposed in the third flow passage 1023, a reactor 32 is disposed in the fourth flow passage 1024, and a second fan 142 is disposed between the third flow passage 1023 and the fourth flow passage 1024. The air flow can flow along the first flow passage 1021, the second flow passage 1022, the third flow passage 1023 and the fourth flow passage 1024 to form a circulation loop under the driving of the first fan 141 and the second fan 142, and the air flow sequentially passes through the first radiator 11, the first fan 141, the capacitor 33, the second fan 142 and the reactor 32, so as to dissipate heat of the electronic device.

The second cavity 103 may be provided therein with a circuit breaker 31, a diode 35, an IGBT34, a transformer 36, a contactor 37, an electric control board, and the like, and since the operating temperature of IGBT and the diode 35 is high, a second heat sink 12 is provided to dissipate heat of IGBT and the diode 35, wherein the second heat sink 12 may be stacked on the back surface of the cabinet 10. The IGBT34 and the diode 35 are arranged side by side, and are stacked on the back plate of the cabinet 10, and the contactor 37 and the transformer 36 are stacked on the back plate of the cabinet 10 and are positioned below the IGBT 34.

In addition, a junction box 13 is provided outside the cabinet 10, and the junction box 13 is disposed close to the circuit breaker 31, wherein the junction box 13, the circuit breaker 31, the reactor 32, the diode 35, the igbts 34, the transformer 36, the contactor 37, and the like are electrically connected to form a frequency conversion circuit (e.g., connected as a frequency conversion structure in the related art).

In addition, the utility model also provides a compressor which can comprise the frequency conversion cabinet, and the frequency conversion of the compressor can be realized through the frequency conversion cabinet, so that the frequency of the compressor can be conveniently adjusted according to different working conditions, and the energy efficiency is improved. In addition, the variable frequency cabinet disclosed by the utility model has the advantages that the stability and the effect of variable frequency can be improved, the compressor can stably run, the fault rate of the compressor is reduced, the compressor can stably run at a preset frequency, the energy efficiency is improved, and the energy is saved and the environment is protected.

The utility model also provides heating and ventilation equipment which can comprise the frequency conversion cabinet or the compressor. Through setting up foretell frequency conversion cabinet, can improve the stability of heating equipment operation, in addition, first radiator and second radiator in this frequency conversion cabinet can dispel the heat for utilizing the mode of refrigerant phase transition, for example, this first radiator and second radiator can be connected to the unit or the compressor etc. of heating equipment to utilize compressor etc. to realize the heat dissipation to the electronic device in the frequency conversion cabinet, improve the stability of heating equipment and frequency conversion cabinet. And the structure of the heating and ventilation equipment can be simplified, and the space utilization rate and the stability of the heating and ventilation equipment are optimized.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (16)

1. A variable frequency cabinet, characterized by comprising:

the electronic device comprises a cabinet body (10), wherein the cabinet body (10) is provided with a containing cavity (101), the containing cavity (101) is configured to contain an electronic device, and the containing cavity (101) comprises a first cavity (102) and a second cavity (103);

a first radiator (11) disposed in the first chamber (102) and configured to reduce the temperature in the first chamber (102) by means of gas flow;

a second heat sink (12) configured to dissipate heat by means of thermal conduction to the electronic device within the second cavity (103);

an airflow driver configured to form a heat dissipating airflow within the first cavity (102) that flows through the electronics within the first cavity (102) and the first heat sink (11).

2. A variable frequency cabinet according to claim 1, characterized in that the first chamber (102) is configured as an annular chamber, the air flow in the first chamber (102) being adapted to circulate for heat dissipation under the driving action of the air flow driving member.

3. The variable frequency cabinet according to claim 2, wherein the first chamber (102) comprises a first flow passage (1021), the first flow passage (1021) being located at a bottom of the cabinet body (10) and configured to direct a flow of heat dissipating air from a first side to a second side of the cabinet body (10).

4. A variable frequency cabinet according to claim 3, characterized in that the first radiator (11) is arranged in the first flow channel (1021);

and/or a drain is arranged on the bottom wall of the first flow channel (1021) so as to drain the condensed water in the first cavity (102).

5. A variable frequency cabinet according to claim 3, wherein the first chamber (102) further comprises a second flow channel (1022), the second flow channel (1022) being located at a second side of the cabinet body (10) for guiding the heat radiation air flow from the bottom of the cabinet body (10) to the upper part of the cabinet body (10).

6. The variable frequency cabinet of claim 5, wherein the flow channel wall of the first flow channel (1021) comprises a first flow guide plate (121) adjacent to the second flow channel (1022), the flow channel wall of the second flow channel (1022) comprises a second flow guide plate (122) adjacent to the first flow channel (1021), the first flow guide plate (121) and the second flow guide plate (122) meet in a direction from the first side toward the second side, and in a direction from the first side toward the second side, the first flow guide plate (121) is inclined downward with respect to a horizontal direction, and the second flow guide plate (122) is inclined upward with respect to the horizontal direction.

7. The variable frequency cabinet according to claim 5, wherein the first chamber (102) further comprises a third flow channel (1023) provided in an upper portion of the cabinet body (10), the third flow channel (1023) guiding the heat dissipating air flow from the second side to the first side of the cabinet body (10).

8. The variable frequency cabinet of claim 7, wherein the first cavity (102) further comprises a fourth flow channel (1024) disposed on the first side, the fourth flow channel (1024) directing the flow of heat sink air from above the cabinet (10) to the bottom of the cabinet (10).

9. The variable frequency cabinet according to any one of claims 1-8, wherein the first cavity (102) is configured as a ring extending along a peripheral wall of the cabinet (10) within the cabinet (10);

and/or the first cavity (102) is configured as a closed annular cavity, and the second cavity (103) is mutually separated from the first cavity (102);

and/or the first cavity (102) is arranged in the cabinet body (10) close to the backboard of the cabinet body (10).

10. The variable frequency cabinet of any one of claims 1-8, further comprising:

the door body (20), the door body (20) with cabinet body (10) links to each other, and is configured to open and close holding chamber (101), the door body (20) close holding chamber (101) time closing cap second chamber (103).

11. The variable frequency cabinet according to any one of claims 1-8, wherein the second radiator (12) is a parallel flow radiator; and/or the first radiator (11) is an evaporator.

12. The variable frequency cabinet according to any one of claims 1-8, wherein the electronics within the first cavity (102) comprise a first electronics and a second electronics, the first electronics having a heating power that is less than a heating power of the second electronics, the first electronics being upstream of the second electronics in a flow direction of the cooling airflow;

and/or the electronic device comprises a third electronic device, wherein the third electronic device is arranged in the second cavity (103), and the second radiator (12) and the third electronic device are arranged in a stacked mode so as to radiate heat for the third electronic device.

13. The variable frequency cabinet according to any one of claims 1-8, wherein the second heat sink (12) is at least partially arranged within the second cavity (103); or, the second heat sink (12) is disposed on the back of the cabinet (10) and corresponds to the position of at least part of the electronic devices within the second cavity (103).

14. The variable frequency cabinet according to any one of claims 1-8, wherein a circuit breaker (31), a reactor (32), a capacitor (33), an IGBT (34) and a diode (35) are arranged in the accommodating cavity (101), wherein the circuit breaker (31), the reactor (32), the capacitor (33), the IGBT (34) and the diode (35) are electrically connected, and wherein at least one of the circuit breaker (31), the reactor (32), the capacitor (33), the IGBT (34) and the diode (35) is provided in the first cavity (102), and at least one is provided in the second cavity (103).

15. Compressor, characterized by comprising a variable frequency cabinet according to any of claims 1-14.

16. A heating and ventilation device, characterized by comprising a variable frequency cabinet according to any one of claims 1-14; or a compressor according to claim 15.

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