Frequency Converter

Abstract

The present invention provides a frequency converter, comprising a shell, a reactor and a first refrigerant heat dissipation structure, wherein the reactor is arranged in the shell, and the first refrigerant heat dissipation structure is arranged on the reactor. The frequency converter provided by the present invention utilizes the refrigerant in the first refrigerant heat dissipation structure to dissipate heat from the reactor, and the refrigerant can directly transfer the heat of the reactor to the outside of the shell, thereby overcoming the problem that heat is still accumulated inside the shell when heat is dissipated by gas, causing the overall temperature of the frequency converter to be too high, thereby effectively improving the heat dissipation effect of the frequency converter, and at the same time, a second refrigerant heat dissipation structure is provided to dissipate heat from electronic components, and a heat dissipation duct is utilized to allow gas to flow through the first refrigerant heat dissipation structure and the second refrigerant heat dissipation structure, thereby realizing circulating heat dissipation inside the shell, and increasing the heat dissipation effect of the frequency converter.

Description

Technical Field

[0001] The invention relates to the technical field of household appliances, in particular to a frequency converter. Background Art

[0002] In modern home life, air conditioners, refrigerators, rice cookers, and table lamps are all indispensable household appliances for every family, but the total power consumption of these household appliances cannot be ignored. With the development of modern science and technology, frequency converters have emerged, which combine frequency conversion technology with microelectronics technology to control AC motor equipment by changing the frequency, thus saving energy. With the improvement of industrial automation, frequency converters have also been widely used and are an important device that is indispensable for modern speed control and energy saving. The heat dissipation effect of existing frequency conversion equipment is not ideal, especially the internal reactor only uses gas flow for heat dissipation. If it cannot be efficiently cooled during long-term high-load operation, the internal components of the frequency converter will be aged faster due to excessive temperature, resulting in a shorter service life of the frequency converter and failure to operate normally. Summary of the invention

[0003] In order to solve the technical problem of poor heat dissipation effect in the inverter in the prior art, a inverter is provided which uses a refrigerant to dissipate heat from a reactor to increase the heat dissipation effect.

[0004] To this end, the present invention provides a frequency converter, including a housing, a reactor and a first refrigerant heat dissipation structure, wherein the reactor is arranged in the housing, and the first refrigerant heat dissipation structure is arranged on the reactor.

[0005] The first refrigerant heat dissipation structure includes a first heat dissipation plate and a first heat dissipation tube. The first heat dissipation plate is arranged on the reactor, and the first heat dissipation tube is arranged in the first heat dissipation plate.

[0006] The reactor comprises a plurality of reactance cores, all of which are arranged in parallel, and the first heat dissipation tubes correspond to the reactance cores one by one.

[0007] An insulating heat-conducting layer is provided between the reactance core and the first heat sink.

[0008] The inverter also includes a second refrigerant heat dissipation structure and electronic components. The second refrigerant heat dissipation structure is arranged in the shell, and the second refrigerant heat dissipation structure is arranged at the position of the reactor. The electronic components are arranged on the second refrigerant heat dissipation structure.

[0009] The second refrigerant heat dissipation structure includes a second heat dissipation plate and a second heat dissipation tube, the second heat dissipation tube is arranged in the second heat dissipation plate, the electronic components are arranged on the first side surface of the second heat dissipation plate, and fins are arranged on the second side surface of the second heat dissipation plate.

[0010] A heat dissipation duct is formed in the shell, and the reactor, the first refrigerant heat dissipation structure, and the second refrigerant heat dissipation structure are all arranged in the heat dissipation duct.

[0011] The reactor includes a plurality of reactance cores, all of which are arranged in parallel, with a spacing between two adjacent reactance cores, part of the first refrigerant heat dissipation structure being located above and / or below the spacing, and the spacing constituting part of the heat dissipation duct.

[0012] The inverter also includes an air blowing fan, which is arranged in the shell, and the air outlet direction of the air blowing fan is toward the inductor; and / or the inverter also includes an air suction fan, which is arranged in the shell, and the air inlet direction of the air suction fan is toward the second refrigerant heat dissipation structure.

[0013] The frequency converter further includes a heat exchanger, and the heat exchanger is arranged in the heat dissipation duct.

[0014] The frequency converter provided by the present invention utilizes the refrigerant in the first refrigerant heat dissipation structure to dissipate heat from the reactor. The refrigerant can directly transfer the heat of the reactor to the outside of the shell, thereby overcoming the problem that using gas for heat dissipation still causes heat to accumulate inside the shell and causes the overall temperature of the frequency converter to be too high, thereby effectively improving the heat dissipation effect of the frequency converter. At the same time, a second refrigerant heat dissipation structure is provided to dissipate heat from electronic components, and a heat dissipation duct is used to make the gas flow through the first refrigerant heat dissipation structure and the second refrigerant heat dissipation structure, so as to realize circulating heat dissipation inside the shell and increase the heat dissipation effect of the frequency converter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a frequency converter provided by an embodiment of the present invention;

[0016] Figure 2 Another structural schematic diagram of a frequency converter provided by an embodiment of the present invention;

[0017] Figure 3 A schematic diagram of the structure of a first refrigerant heat dissipation structure and a reactor provided in an embodiment of the present invention;

[0018] Figure 4 A schematic diagram of the structure of a second refrigerant heat dissipation structure provided in an embodiment of the present invention;

[0019] In the figure:

[0020] 1. Shell; 2. Reactor; 3. First refrigerant heat dissipation structure; 31. First heat sink; 32. First heat dissipation pipe; 21. Reactor core; 4. Second refrigerant heat dissipation structure; 41. Second heat sink; 42. Second heat dissipation pipe; 43. Fins; 6. Blowing fan; 7. Suction fan. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] like Figures 1 to 4 The inverter shown includes a housing 1, a reactor 2 and a first refrigerant heat dissipation structure 3, wherein the reactor 2 is arranged in the housing 1, and the first refrigerant heat dissipation structure 3 is arranged on the reactor 2. The refrigerant in the first refrigerant heat dissipation structure 3 is used to dissipate heat from the reactor 2, and the refrigerant can directly transfer the heat of the reactor 2 to the outside of the housing 1, thereby overcoming the problem that heat is still accumulated inside the housing 1 when heat is dissipated by gas, causing the overall temperature of the inverter to be too high, thereby effectively improving the heat dissipation effect of the inverter.

[0023] Specifically, the first refrigerant heat dissipation structure 3 includes a first heat dissipation plate 31 and a first heat dissipation pipe 32. The first heat dissipation plate 31 is arranged on the reactor 2, and the first heat dissipation pipe 32 is arranged in the first heat dissipation plate 31. When the first refrigerant heat dissipation structure 3 is arranged, the first heat dissipation pipe 32 is arranged on the reactor 2, and then the first heat dissipation pipe 32 and the reactor 2 are packaged together by using the first heat dissipation plate 31 (iron plate).

[0024] Preferably, the first heat dissipation tube 32 is a copper tube.

[0025] The reactor 2 includes a plurality of reactance cores 21 , all of the reactance cores 21 are arranged in parallel, the first heat dissipation tubes 32 correspond to the reactance cores 21 one by one, and all of the heat dissipation tubes are arranged in the first heat dissipation plate 31 .

[0026] In order to avoid circuit connection between the reactance core 21 and the first heat dissipation tube 32, an insulating heat-conducting layer is provided between the reactance core 21 and the first heat dissipation plate 31, and the insulating heat-conducting layer is used to achieve insulation while ensuring heat transfer. Preferably, the material of the insulating heat-conducting layer includes silicon carbide.

[0027] The inverter further includes a second refrigerant heat dissipation structure 4 and electronic components, wherein the second refrigerant heat dissipation structure 4 is disposed in the housing 1 and at the position of the reactor 2, and the electronic components are disposed on the second refrigerant heat dissipation structure 4. The refrigerant in the second refrigerant heat dissipation structure 4 can dissipate heat for the electronic components, thereby further ensuring the heat dissipation effect of the inverter.

[0028] Specifically, the second refrigerant heat dissipation structure 4 includes a second heat dissipation plate 41 and a second heat dissipation tube 42, the second heat dissipation tube 42 is arranged in the second heat dissipation plate 41, the electronic components are arranged on the first side of the second heat dissipation plate 41, and the second side of the second heat dissipation plate 41 is provided with fins 43. When the cooling capacity of the refrigerant in the second heat dissipation tube 42 is insufficient, the heat on the electronic components can be released into the housing 1 through the fins 43, thereby improving the heat dissipation performance of the electronic components. At the same time, when the cooling capacity of the refrigerant in the second heat dissipation tube 42 is excessive, the fins 43 can also exchange heat with the inside of the housing 1, thereby further improving the heat dissipation performance of the electronic components.

[0029] A heat dissipation duct is formed in the shell 1, and the reactor 2, the first refrigerant heat dissipation structure 3, and the second refrigerant heat dissipation structure 4 are all arranged in the heat dissipation duct. The frequency converter also includes a heat exchanger, and the heat exchanger is arranged in the heat dissipation duct. The airflow in the heat dissipation duct can flow at the reactor 2, the first refrigerant heat dissipation structure 3, and the second refrigerant heat dissipation structure 4, which not only solves the condensation phenomenon caused by the first heat dissipation pipe 32 and the second heat dissipation pipe 42 which may be relatively cold (the refrigerant inlet of the first heat dissipation pipe 32 is relatively cold, and the moisture in the cabinet may be liquefied, and the second refrigerant heat dissipation structure 4 will also make the temperature of the fin 43 lower when the refrigerant is excessive, and the gas that continuously flows in the cabinet can take away the moisture and finally discharge it from the water receiving tray at the heat exchanger), but also further improves the heat dissipation performance of the entire frequency converter cabinet.

[0030] The reactor 2 includes a plurality of reactance cores 21, all of which are arranged in parallel, with a spacing between two adjacent reactance cores 21, part of the first refrigerant heat dissipation structure 3 being located above and / or below the spacing, and the spacing forming part of the heat dissipation air duct, so that the airflow in the heat dissipation air duct can flow within the spacing, further increasing the heat dissipation effect of the airflow on the reactor 2.

[0031] The inverter further includes an air blowing fan 6 , which is disposed in the housing 1 , and the air outlet direction of the air blowing fan 6 is toward the reactor 2 , thereby increasing the flow rate of air entering the interval, thereby increasing the heat dissipation effect on the reactor 2 .

[0032] The inverter further includes an air intake fan 7, which is disposed in the housing 1, and the air intake direction of the air intake fan 7 is toward the second refrigerant heat dissipation structure 4. The air intake fan 7 draws hot air in the housing 1 to the air blowing fan 6 to realize gas circulation, wherein the installation position of the air intake fan 7 is upward and toward the middle of the second refrigerant heat dissipation structure 4.

[0033] It should be noted that the refrigerants in the first refrigerant heat dissipation structure 3 and the second refrigerant heat dissipation structure 4 are both from the refrigerant heat exchange cycle in the equipment used by the inverter.

[0034] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A frequency converter, characterized in that: The invention comprises a shell (1), a reactor (2) and a first refrigerant heat dissipation structure (3), wherein the reactor (2) is arranged in the shell (1), and the first refrigerant heat dissipation structure (3) is arranged on the reactor (2); the first refrigerant heat dissipation structure (3) comprises a first heat dissipation plate (31) and a first heat dissipation pipe (32), wherein the first heat dissipation plate (31) is arranged on the reactor (2), and the first heat dissipation pipe (32) is arranged in the first heat dissipation plate (31); the reactor (2) comprises a plurality of reactance cores (21), all of the reactance cores (21) are arranged in parallel, the number of the first heat dissipation pipes (32) is a plurality, and the first heat dissipation pipes (32) correspond to the reactance cores (21) one by one; the reactance cores (21) correspond to the first heat dissipation pipes (32) and the first heat dissipation pipes (32 ... An insulating heat-conducting layer is arranged between the first heat sinks (31); the inverter further comprises a second refrigerant heat dissipation structure (4) and electronic components, the second refrigerant heat dissipation structure (4) is arranged in the shell (1), and the second refrigerant heat dissipation structure (4) is arranged on one side of the reactor (2), and the electronic components are arranged on the second refrigerant heat dissipation structure (4); a heat dissipation duct is formed in the shell (1), and the reactor (2), the first refrigerant heat dissipation structure (3), and the second refrigerant heat dissipation structure (4) are all arranged in the heat dissipation duct; there is a spacing between two adjacent reactor cores (21), part of the first refrigerant heat dissipation structure (3) is located above and / or below the spacing, and the spacing constitutes part of the heat dissipation duct.

2. The frequency converter according to claim 1, characterized in that: The second refrigerant heat dissipation structure (4) comprises a second heat dissipation plate (41) and a second heat dissipation tube (42), the second heat dissipation tube (42) being arranged in the second heat dissipation plate (41), the electronic components being arranged on a first side surface of the second heat dissipation plate (41), and fins (43) being arranged on a second side surface of the second heat dissipation plate (41).

3. The frequency converter according to claim 1, characterized in that: The frequency converter further comprises an air blowing fan (6), wherein the air blowing fan (6) is arranged in the housing (1), and the air outlet direction of the air blowing fan (6) is toward the reactor (2); and / or the frequency converter further comprises an air suction fan (7), wherein the air suction fan (7) is arranged in the housing (1), and the air inlet direction of the air suction fan (7) is toward the second refrigerant heat dissipation structure (4).

4. The frequency converter according to claim 1, characterized in that: The frequency converter further includes a heat exchanger, and the heat exchanger is arranged in the heat dissipation duct.

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