CN218920255U - Frequency converter, compressor and heating ventilation equipment - Google Patents

Abstract

The utility model discloses a frequency converter, a compressor and heating and ventilation equipment, wherein the frequency converter comprises: a housing provided with a receiving cavity configured to receive an electronic device, the receiving cavity including a first 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; the airflow driving piece comprises a plurality of fans, wherein the fans are distributed along the extending direction of the first cavity and are configured to drive airflow in the first cavity to flow through the first radiator and the electronic device in the first cavity. According to the frequency converter provided by the embodiment of the utility model, the airflow driving piece can be used for driving the airflow, and the airflow driving piece can comprise a plurality of fans, and the fans are used for driving the airflow, so that the heat dissipation of the electronic devices in the first cavity is facilitated.

Description

Frequency converter, compressor and heating ventilation equipment

Technical Field

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

Background

The frequency converter control cabinet, which is called frequency converter 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 converter comprises a frequency converter power element, a frequency converter control element and a frequency converter control element, when the frequency converter 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 inverter is usually disposed at the top or the upper part of the front wall of the inverter, and when the inverter is placed in the air compressor, if the air outlet is located at the top of the inverter, since the air outlet of the inverter is very close to the air inlet of the air compressor, hot air from the air outlet of the inverter 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 converter, the air outlet of the frequency converter is required to use a filter grid with a certain protection level, so that hot air at the air outlet of the frequency converter is discharged downwards in an inclined manner, and therefore, the hot air from the air outlet of the frequency converter is still sucked by the air inlet of the frequency converter positioned on the lower part of the front wall, which causes overhigh temperature inside the frequency converter and affects the performance and the stability of the frequency converter.

Disclosure of Invention

An object of the present utility model is to provide a frequency converter, which can drive an air flow by using an air flow driving member, and the air flow driving member can include a plurality of air flow driving members, so as to drive the air flow by using the plurality of air flow driving members, thereby facilitating heat dissipation of electronic devices in a first cavity.

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

It is a further object of the present utility model to provide a heating and ventilation device comprising the compressor or the inverter described above.

According to an embodiment of the present utility model, a frequency converter includes: a housing provided with a receiving cavity configured to receive an electronic device, the receiving cavity including a first 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; the airflow driving piece comprises a plurality of airflow driving pieces, the plurality of airflow driving pieces are arranged along the extending direction of the first cavity and are configured to drive airflow in the first cavity to flow through the first radiator and the electronic device in the first cavity.

According to the frequency converter provided by the embodiment of the utility model, the airflow can be driven by the airflow driving piece, the airflow driving piece can comprise a plurality of airflow driving pieces, and the airflow is driven by the airflow driving pieces, so that the heat dissipation of the electronic devices in the first cavity is facilitated.

In addition, the frequency converter according to the above embodiment of the present utility model may further have the following additional technical features:

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 cavity is configured to include a first half and a second half, and two ends of the first half are respectively connected to two ends of the second half, so as to configure the first cavity into an annular cavity.

Optionally, the airflow driving member includes a first fan and a second fan, the first fan is disposed between one end of the first half and a corresponding end of the second half, and the second fan is disposed between the other end of the first half and the corresponding end of the second half.

Optionally, two ends of the first half part are respectively connected with corresponding ends of the second half part to form a corner structure.

Optionally, the first chamber includes a first flow channel and a second flow channel, the first flow channel is located at the bottom of the housing and configured to guide a heat dissipation airflow to flow from a first side to a second side of the housing, the second flow channel is located at the second side of the housing and guides the heat dissipation airflow to flow from the bottom of the housing to the upper portion of the housing, a first fan is provided at a junction of the first flow channel and the second flow channel, and the first fan is configured to drive the airflow to flow from the first flow channel to the second flow channel.

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

Optionally, the main suction direction and the main discharge direction of the first fan are both inclined toward the second side in vertically upward directions.

Optionally, the first cavity further includes a third flow channel disposed at an upper portion of the housing and a fourth flow channel disposed at the first side, the third flow channel guides the heat dissipation air flow to flow from the second side of the housing to the first side, the fourth flow channel guides the heat dissipation air flow to flow from an upper portion of the housing to a bottom portion of the housing, the second fan is disposed at a junction of the third flow channel and the fourth flow channel, and the second fan is configured to drive the air flow to flow from the third flow channel to the fourth flow channel.

Optionally, the first cavity is disposed in the housing on a side near the back plate.

Optionally, the first radiator is an evaporator.

Optionally, the frequency converter further includes: and the door body is connected with the shell and is configured to open and close the accommodating cavity.

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

The heating and ventilation equipment comprises the frequency converter; or a compressor according to the foregoing.

Drawings

Fig. 1 is a schematic diagram of a frequency converter according to an embodiment of the utility model.

Fig. 2 is a schematic diagram of a frequency converter according to another embodiment of the utility model.

Fig. 3 is a schematic diagram of a frequency converter according to another embodiment of the present utility model.

Fig. 4 is a schematic diagram of a frequency converter according to an embodiment of the utility model.

Fig. 5 is a schematic diagram of a frequency converter according to an embodiment of the utility model.

Fig. 6 is a schematic diagram of a frequency converter according to an embodiment of the utility model.

Fig. 7 is a schematic diagram of a frequency converter according to an embodiment of the utility model.

Fig. 8 is a schematic diagram of a frequency converter according to an embodiment of the utility model.

Fig. 9 is a schematic diagram of a frequency converter according to an embodiment of the utility model.

Fig. 10 is a schematic diagram of a frequency converter according to an embodiment of the utility model.

Fig. 11 is a schematic diagram of a frequency converter according to an embodiment of the utility model.

Reference numerals: 100. a frequency converter; 10. a housing; 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; 1025. a first half; 1026. a second half; 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.

As shown in fig. 1, a frequency converter 100 according to an embodiment of the present utility model includes a housing 10, where the housing 10 is provided with a housing cavity 101, the housing cavity 101 is configured to house an electronic device, the housing cavity 101 includes a first cavity 102, and the first cavity 102 may be configured to dissipate heat by means of gas circulation, in other words, through circulation of air flow in the first cavity 102, so as to take away heat on the electronic device in the first cavity 102, thereby achieving the purpose of dissipating heat 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 timely radiate air flow, so that the air flow better radiates heat with electronic devices in the first cavity 102, and an air cooling effect in the first cavity 102 is effectively improved. The heat exchange between the first radiator 11 and the electronic device in the first cavity 102 is realized through the air flow, and the temperature in the first cavity 102 is reduced through the air flow heat exchange mode.

To facilitate airflow within the first chamber 102, the housing 10 may further include an airflow driver 14, which airflow driver 14 may be configured to drive airflow within the first chamber 102 into 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 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 chamber 102 and configured to drive the airflow in the first chamber 102 to flow through the first heat sink 11 and the electronic devices in the first chamber 102.

According to the frequency converter 100 of the embodiment of the utility model, the first cavity 102 can exchange heat in an air cooling manner, and the temperature in the first cavity 102 is reduced by using the first radiator 11, so that the temperature of electronic devices in the first cavity 102 is reduced; in addition, the airflow driving member 14 may be used to drive the airflow, and the airflow driving member 14 may include a plurality of airflow driving members 14 to drive the airflow, so as to improve the circulation efficiency of the airflow and facilitate the heat dissipation of the electronic devices in the first cavity 102.

In some embodiments of the present utility model, the first chamber 102 is a closed chamber, which forms a closed flow path in the housing 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.

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 converter 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.

Wherein, as shown in fig. 2, the first cavity 102 may be configured to include a first half 1025 and a second half 1026, and two ends of the first half 1025 are respectively connected to two ends of the second half 1026, so as to configure the first cavity 102 into an annular cavity.

In addition, as shown in fig. 2, the airflow driving member 14 includes a first fan 141 and a second fan 142, the first fan 141 is disposed between one end of the first half 1025 and a corresponding end of the second half 1026, and the second fan 142 is disposed between the other end of the first half 1025 and the corresponding end of the second half 1026. That is, fans are disposed at the connection portions of the first half 1025 and the second half 1026, and by providing a plurality of fans, circulation of air flow between the first half 1025 and the second half 1026 can be achieved, so as to facilitate heat dissipation of the first cavity 102 and electronic devices therein, and improve heat dissipation effect and operation stability of the frequency converter 100.

In addition, two ends of the first half 1025 are respectively connected with corresponding ends of the second half 1026 to form a corner structure. That is, an included angle is formed between one end of the first half 1025 and the corresponding end of the second half 1026, and an included angle is formed between the other end of the first half 1025 and the corresponding end of the second half 1026, so that in the air flow process, since the included angle is formed at the connection position of the first half 1025 and the second half 1026, when the air flow circulates between the first half 1025 and the second half 1026, the air resistance of the air flow at the connection position of the first half 1025 and the second half 1026 is increased, and therefore, by arranging the first fan 141 and the second fan 142 at the corner structure, the air resistance at the corner can be counteracted by the fans, thereby facilitating the stable circulation of the air in the first cavity 102.

In addition, as shown in fig. 3, the accommodating cavity 101 of the present utility model further includes a second cavity 103, and an electronic device may be disposed in the second cavity 103, and heat dissipation is performed on the electronic device in the second cavity 103 by using modes of air cooling, heat transfer, and the like.

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.

Referring to fig. 1-11, in some embodiments of the utility model, the first chamber 102 may include a first flow passage 1021, the first flow passage 1021 being located at the bottom of the housing 10 and configured to direct a flow of heat dissipating air from a first side to a second side of the housing 10. Referring to the drawings, the first flow passage 1021 is provided at the bottom of the housing 10 and extends in a left-to-right direction to guide the heat dissipation air flow from the left side of the bottom of the housing 10 to the right side of the housing 10, thereby achieving heat dissipation to the bottom of the housing 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 where the first radiator 11 is located is low, so that condensation is easily generated at the position where the first radiator 11 is located, and condensed 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 shell 10 more quickly, the influence of the condensed water and the like on other electronic devices caused by the flowing in the first cavity 102 is avoided, and the stability of the frequency converter 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 housing 10, for directing the flow of heat dissipating air from the bottom of the housing 10 to the upper portion of the housing 10. The second flow passage 1022 is provided on the right side of the housing 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 flow in the first flow passage 1021 can be sent to the upper part of the shell 10 through the second flow passage 1022 to realize heat dissipation of the electronic device on the upper part of the shell 10, wherein the electronic device can be arranged in the second flow passage 1022, so that the heat dissipation air flow passing through the second flow passage 1022 is utilized to dissipate heat; 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 provided in the second flow path 1022, the thickness of the second flow path 1022 in the left-right direction may be set to be relatively small to optimize the space utilization of the inverter 100, for example, the thickness of the second flow path 1022 in the left-right direction may be set to be smaller than the thickness of the first flow path 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 121 and the second flow guide plate 122 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 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 converter 100 is improved, and the noise reduction of the frequency converter 100 is realized.

Optionally, a first fan 141 is provided at the junction of the first flow passage 1021 and the second flow passage 1022, the first fan 141 being configured to drive the air flow 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 first chamber 102 further includes a third flow passage 1023 disposed in an upper portion of the housing 10, the third flow passage 1023 directing a flow of heat dissipating air from the second side to the first side of the housing 10. Referring to the drawings, a third flow path 1023 is provided at an upper portion of the housing 10 and extends in a left-right direction, and a right end of the third flow path 1023 communicates with an upper end of the second flow path 1022. The air flow can be guided conveniently by the guiding action of the third flow passage 1023, wherein the third flow passage 1023 is arranged at the upper part of the housing 10, and the cooled air flow can be guided to the third flow passage 1023 by the guiding action 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, the fourth flow channel 1024 guiding the flow of the heat dissipating air from above the housing 10 to the bottom of the housing 10. Referring to the drawings, the fourth flow passage 1024 may be provided at the left side of the housing 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, a second fan 142 is disposed at the junction of the third flow path 1023 and the fourth flow path 1024, the second fan 142 being configured to drive airflow from the third flow path 1023 to the fourth flow path 1024. And the heat dissipation efficiency and effect are improved.

The first radiator 11 may be 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 converter 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 converter 100 are improved.

Optionally, the first cavity 102 is configured into an annular shape extending along the peripheral wall of the housing 10 in the housing 10, where the first cavity 102 may have a simpler structure and a larger coverage area, and 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 frequency converter 100, optimizing performance of the frequency converter 100, reducing failure rate of the frequency converter 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 housing 10 proximate to a back plate of the housing 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 the electronic device in the second cavity 103 can be installed after the first cavity 102 is assembled, so that the first cavity 102 does not affect the installation of the electronic device in the second cavity 103, and the installation efficiency of the electronic component in the frequency converter 100 can be improved.

Optionally, the frequency converter 100 further includes a door 20, where the door 20 is connected to the housing 10 and configured to open and close the accommodating cavity 101, and the door 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. By providing the door 20, the electronic device can be conveniently installed, and the frequency converter 100 can be conveniently used.

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 heat generated in the operation process of the reactor 32 is relatively high, and the reactor can be placed in the first cavity 102 to dissipate heat in an air cooling mode; 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 an air cooling mode, and the first radiator 11, the capacitor 33 and the reactor 32 are sequentially arranged in the flowing direction of heat dissipating airflow, so that good heat dissipation of all components can be achieved; 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 converter 100, wherein a first cavity 102 and a second cavity 103 are arranged in the frequency converter 100, heat dissipation is carried out in different modes, heat dissipation can be carried out according to the heat productivity of different devices in the frequency converter 100, the mutual transfer of heat among the devices can be reduced by components, the heat dissipation effect is affected, the movable isolation effect can be achieved, and the anti-interference purpose is realized.

Referring to fig. 1 to 9, a frequency converter 100 of the present utility model includes a housing 10 and a door 20, wherein the housing 10 has a housing chamber 101 therein, and can be opened and closed by the door 20, the housing chamber 101 is divided into a first chamber 102 and a second chamber 103, the first chamber 102 is a closed annular chamber and is disposed along a peripheral wall of the housing 10, the first chamber 102 is disposed around the second chamber 103, the first chamber 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 fan 141 is disposed between the first flow passage 1021 and the first flow passage 1021, 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, etc., 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 case 10. The IGBT34 and the diode 35 are arranged side by side, and are stacked on the back plate of the case 10, and the contactor 37 and the transformer 36 are stacked on the back plate of the case 10, and are positioned below the IGBT 34.

Further, a junction box 13 is provided outside the case 10, and the junction box 13 is provided 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 converter, and the frequency conversion of the compressor can be realized through the frequency converter, 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 frequency converter is adopted in the utility model, so that the stability and effect of frequency conversion can be improved, the compressor can be operated stably, the fault rate of the compressor is reduced, the compressor can be operated stably at a preset frequency conveniently, the energy efficiency is improved, and the energy-saving and environment-friendly effects are realized.

The utility model also provides heating and ventilation equipment which can comprise the frequency converter or the compressor. Through setting up foretell converter, can improve the stability of heating equipment operation, in addition, first radiator and the second radiator in this converter 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 heating equipment in the utmost point group to utilize compressor etc. to realize the heat dissipation to the electronic device in the converter, improve the stability of heating equipment and converter. 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 (12)

1. A frequency converter (100), characterized by comprising:

a housing (10), the housing (10) being provided with a receiving cavity (101), the receiving cavity (101) being configured to receive an electronic device, the receiving cavity (101) comprising a first cavity (102);

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;

the airflow driving piece (14), the airflow driving piece (14) comprises a plurality of airflow driving pieces (14), the plurality of airflow driving pieces (14) are arranged along the extending direction of the first cavity (102) and are configured to drive airflow in the first cavity (102) to flow through the first radiator (11) and the electronic device in the first cavity (102).

2. The frequency converter (100) of claim 1, wherein the first chamber (102) is configured as an annular chamber, and wherein the air flow within the first chamber (102) is adapted to circulate under the drive of the air flow driver (14) to dissipate heat.

3. The frequency converter (100) of claim 2, wherein the first cavity (102) is configured to include a first half (1025) and a second half (1026), both ends of the first half (1025) being connected to both ends of the second half (1026), respectively, to configure the first cavity (102) as an annular cavity;

the airflow driving piece (14) comprises a first fan (141) and a second fan (142), the first fan (141) is arranged between one end of the first half (1025) and the corresponding end of the second half (1026), and the second fan (142) is arranged between the other end of the first half (1025) and the corresponding end of the second half (1026).

4. A frequency converter (100) according to claim 3, wherein the two ends of the first half (1025) are connected in a corner configuration with the corresponding ends of the second half (1026), respectively.

5. The frequency converter (100) of claim 4, wherein the first cavity (102) includes a first flow passage (1021) and a second flow passage (1022), the first flow passage (1021) being located at a bottom of the housing (10) and configured to direct a flow of heat sink air from a first side to a second side of the housing (10), the second flow passage (1022) being located at a second side of the housing (10) and directing the flow of heat sink air from the bottom of the housing (10) to an upper portion of the housing (10), a first fan (141) being located at a junction of the first flow passage (1021) and the second flow passage (1022), the first fan (141) being configured to drive the flow of air from the first flow passage (1021) to the second flow passage (1022).

6. The frequency converter (100) of claim 5, wherein the first heat sink (11) is disposed in the first flow passage (1021);

and/or the main suction direction and the main discharge direction of the first fan (141) are inclined toward the second side in vertically upward directions.

7. The frequency converter (100) of claim 5, wherein the first cavity (102) further comprises a third flow channel (1023) disposed at an upper portion of the housing (10) and a fourth flow channel (1024) disposed at the first side, the third flow channel (1023) directing the flow of the heat sink air from the second side of the housing (10) to the first side, the fourth flow channel (1024) directing the flow of the heat sink air from above the housing (10) to a bottom of the housing (10), the second fan (142) disposed at a junction of the third flow channel (1023) and the fourth flow channel (1024), the second fan (142) configured to drive the flow of air from the third flow channel (1023) to the fourth flow channel (1024).

8. The frequency converter (100) according to any of claims 1-7, wherein the first cavity (102) is provided in the housing (10) at a side close to the back plate.

9. The frequency converter (100) according to any of claims 1-7, wherein the first heat sink (11) is an evaporator.

10. The frequency converter (100) according to any of claims 1-7, wherein the frequency converter (100) further comprises:

and a door body (20), wherein the door body (20) is connected with the shell (10) and is configured to open and close the accommodating cavity (101).

11. Compressor, characterized by comprising a frequency converter according to any of claims 1-10.

12. Heating and ventilation device, characterized by comprising a frequency converter according to any of claims 1-10; or a compressor according to claim 11.

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