CN205957345U - Heat abstractor and transducer air conditioning of air conditioner converter - Google Patents

Abstract

The utility model provides a cooling device for an air conditioner frequency converter and a frequency conversion air conditioner. The heat dissipation device of the air-conditioning frequency converter includes: a radiator, the bottom of which is a base, a part of the first surface of the base is attached to the heat-generating area on the electric control board of the frequency converter, and the inside of the base is provided with a radiator for cooling liquid to flow. The flow channel is used to conduct the heat generated in the heating area to the entire base by using the cooling liquid; and the second surface of the radiator base is vertically provided with a plurality of fins, wherein the fins are facing the fan of the outdoor unit of the air conditioner, so as to Heat exchange by the airflow generated by the fan. The scheme of the utility model drives the cooling liquid to circulate in the radiator base, so that the heat of the heating area on the small-area electric control board is quickly and evenly distributed on the radiator base, and the fins and the outdoor unit of the air conditioner are used to The forced air cooling of the fan is used for heat exchange, which improves the rapid cooling capacity of the air conditioner in high temperature weather.

Description

Cooling device of air conditioner inverter and inverter air conditioner

technical field

The utility model relates to the field of home appliance control, in particular to a cooling device for an air conditioner frequency converter and an inverter air conditioner.

Background technique

With the development of society and the improvement of people's living standards, air conditioners are more and more regarded as indispensable household appliances in life. Inverter air conditioners have gradually been widely promoted in the market due to their advantages of energy saving and low noise.

The frequency converter installed on the outdoor unit is the core of the frequency conversion air conditioner. It operates at high frequency, cooling and heating up quickly; works at low frequency, maintains a constant temperature and realizes energy saving. However, there is a technical problem of heat dissipation in existing inverter air conditioners. Air conditioner inverters generally use Intelligent Power Modules ( ^IPM for short) as inverter drive power switches. The heat dissipation power is about 80W, and the heat flux reaches about 40W/cm ² . Due to the existence of high heat flux density, the conventional aluminum-fin radiator cannot effectively solve the heat dissipation, and the temperature on the surface of the heat source can reach 105°C. Affects the temperature of the surface of the heat source. The high temperature of the inverter limits its high-frequency operation, which makes the cooling capacity of the air conditioner insufficient, seriously affecting the performance of the air conditioner.

Utility model content

One purpose of the utility model is to solve the heat dissipation technical problem of the high heat flux density of the air conditioner frequency converter.

A further purpose of the utility model is to improve the heat dissipation speed of the air conditioner frequency converter.

In particular, the utility model provides a cooling device for an air conditioner frequency converter, including: a radiator, the bottom of which is a base, and a part of the first surface of the base is attached to the heat-generating area on the electric control board of the frequency converter. The inside of the base is provided with a flow channel for the cooling liquid to use the cooling liquid to conduct the heat generated in the heating area to the entire base; and the second surface of the radiator base is vertically provided with a plurality of fins, wherein the fins The fan facing the outdoor unit of the air conditioner exchanges heat with the airflow generated by the fan.

Optionally, the flow channel zigzags along a direction parallel to the first surface of the base, one end of which is a liquid inlet, and the other end is a liquid outlet.

Optionally, the heat dissipation device of the air conditioner frequency converter further includes: a liquid reservoir, which is arranged outside the radiator and stores cooling liquid therein.

Optionally, the heat dissipation device of the air conditioner frequency converter further includes: a fluid driver, which communicates with the liquid reservoir and is connected with the liquid inlet of the flow passage, so as to deliver the cooling liquid in the liquid storage to the flow passage.

Optionally, the liquid inlet and the liquid outlet communicate with the fluid driver and the liquid reservoir through external pipelines to form a cooling circuit.

Optionally, the cooling circuit is configured such that the cooling liquid flowing out of the liquid outlet enters the liquid reservoir.

Optionally, the cooling liquid is a fluorinated cooling liquid.

Optionally, the fluid driver is a piezoelectric pump.

Optionally, screw holes are provided on the first surface of the base of the heat sink, so as to screw the electric control board of the frequency converter onto the base.

According to another aspect of the utility model, there is also provided an inverter air conditioner, comprising: an electric control board, on which electrical components that generate heat during operation are arranged, so that a heating area is formed on the electric control board; and claim 1 The cooling device for an air-conditioning frequency converter according to any one of 9, wherein a part of the first surface of the base of the cooling device provided with a flow channel for the cooling liquid to flow is in contact with the heat-generating area on the electric control board of the frequency converter. to dissipate heat from hot areas.

The heat dissipation device of the air conditioner frequency converter and the frequency conversion air conditioner of the utility model, wherein the heat dissipation device of the air conditioner frequency converter includes: a radiator, the bottom of which is a base, a part of the first surface of the base and the electric control board of the frequency converter The heating area is attached, and the base is provided with a flow channel for cooling liquid to flow, so that the heat generated by the heating area can be transferred to the entire base by the cooling liquid; and a plurality of ribs are vertically arranged on the second surface of the radiator base The fins are facing the fan of the outdoor unit of the air conditioner to exchange heat with the airflow generated by the fan. By driving the cooling liquid to circulate in the radiator base, the heat-generating area on the electric control board of the small-area inverter The heat is quickly and evenly distributed on the radiator base, and the fins and the forced air cooling of the outdoor unit fan of the air conditioner are used for heat exchange, so that the inverter air conditioner can work in high frequency mode when the ambient temperature is high, improving Rapid cooling capacity in hot weather.

Further, the cooling device of the air conditioner frequency converter of the present utility model communicates with the frequency conversion air conditioner, the liquid inlet and the liquid outlet through the external pipeline to the fluid driver and the liquid reservoir to form a cooling circuit, and the cooling water flowing out from the liquid outlet The liquid enters the liquid storage, and can continue to be recycled, which can speed up the heat dissipation speed of the heat-generating area on the electric control board of the inverter, avoid the problem of the air conditioner being down due to the inverter being burned out due to high temperature, and improve the cooling performance of the air conditioner. Efficiency and service life, while saving the cost of using cooling liquid.

According to the following detailed description of specific embodiments of the utility model in conjunction with the accompanying drawings, those skilled in the art will be more aware of the above and other objectives, advantages and features of the utility model.

Description of drawings

Hereinafter, some specific embodiments of the present utility model will be described in detail in an exemplary rather than restrictive manner with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:

FIG. 1 is a schematic diagram of the overall structure of a cooling device for an air conditioner inverter according to an embodiment of the present invention;

Fig. 2 is an internal structural diagram of the radiator base in the radiator device of the air conditioner frequency converter according to an embodiment of the present invention; and

Fig. 3 is a structural block diagram of an inverter air conditioner according to an embodiment of the present invention.

detailed description

Electric components that generate heat during operation are arranged on the electric control board in the inverter air conditioner to realize functions such as frequency conversion. These electrical components can be dispersed in different positions of the electric control board, and form a heating area on the electric control board during operation. When the inverter air conditioner is working at high frequency, the temperature of the heating area on the electric control board can reach 100°C. High temperature will affect the high-frequency operation of the inverter, resulting in insufficient cooling capacity of the air conditioner and affecting the performance of the air conditioner.

In order to solve the heat dissipation problem of the frequency converter mentioned above, this embodiment proposes a heat dissipation device 20 for an air conditioner frequency converter. 1 is a schematic diagram of the overall structure of the cooling device 20 of the air conditioner inverter, and FIG. 2 is an internal structure diagram of the radiator base 211 in the cooling device 20 of the air conditioner inverter. Wherein, the cooling device 20 of the air conditioner frequency converter may include: a radiator 21 , a liquid reservoir 22 , a fluid driver 23 and pipelines 241 , 242 , 243 .

The bottom of the radiator 21 is a base 211, and a part of the first surface 216 of the base 211 is attached to the heat-generating area on the electric control board 10 of the frequency converter. The inside of the base 211 is provided with a flow channel 213 for cooling liquid to flow. The cooling liquid can be used to conduct the heat generated in the heating area to the entire base 211 . As shown in FIG. 2 , the flow channel 213 can meander and extend along a direction parallel to the first surface 216 of the base 211 , one end of which is a liquid inlet 214 , and the other end is a liquid outlet 215 .

The liquid reservoir 22 is disposed outside the radiator 21 and stores cooling liquid therein. In a preferred embodiment, the cooling liquid can be a fluorinated cooling liquid, which is a colorless and transparent perfluorinated chemical, has good chemical inertness, electrical insulation performance, and thermal conductivity, and can be used in high-voltage transformers and cooling of high power electronic components. In some other embodiments, the cooling liquid may also be a mixed liquid of ethylene glycol and water, which can ensure no freezing in winter.

The fluid driver 23 communicates with the liquid reservoir 22 and is connected with the liquid inlet 214 of the flow channel 213 to deliver the cooling liquid in the liquid storage 22 to the flow channel 213 and drive the cooling liquid to circulate in the flow channel 213 . In a preferred embodiment, the fluid driver 23 may be a piezoelectric pump. As a new type of fluid driver, the piezoelectric pump does not need an additional drive motor, but uses the inverse piezoelectric effect of piezoelectric ceramics to deform the piezoelectric vibrator, and then the volume change of the pump chamber is generated by the deformation to achieve fluid output or use pressure The electric vibrator generates fluctuations to transport the liquid. In addition, the piezoelectric pump has low power consumption and low noise, which can effectively reduce energy consumption and improve user experience.

The liquid inlet 214 and the liquid outlet 215 communicate with the fluid driver 23 and the liquid reservoir 22 through an external pipeline to form a cooling circuit, and the pipeline can be a plastic hose. The cooling circuit is configured such that the cooling liquid flowing out from the liquid outlet 215 enters the liquid reservoir 22 . That is to say, the cooling liquid flows out from the liquid reservoir 22, and flows through: the first pipeline 241, the fluid driver 23, the second pipeline 242, the liquid inlet 214, the flow channel 213, the liquid outlet 215, the third The pipeline 243 and the liquid reservoir 22 form a circulation. By driving the cooling liquid to circulate in the radiator base 211 , the heat of the heat generating area on the electric control board 10 of the frequency converter with a small area can be quickly and evenly distributed on the radiator base 211 .

In a specific embodiment, the base 211 of the heat sink 21 can be made of metal aluminum due to its high thermal conductivity and low cost. Screw holes may be provided on the first surface 216 of the base 211 of the heat sink to screw the electric control board 10 of the inverter onto the base 211 . In some other embodiments, the first surface 216 of the base 211 of the heat sink and the electric control board 10 may also be bonded through an interface heat conducting medium. The interface heat conduction medium is coated between the first surface 216 of the base 211 of the heat sink and the electric control board 10, thereby filling the gap between the contact surfaces, making use of its excellent heat conduction effect to make the heat conduction more smooth, avoiding these The voids hinder the conduction of heat. The interface heat conduction medium can be heat conduction silica gel, heat conduction silicone grease, metal heat conduction sheet, graphite heat conduction film and other materials. Since thermally conductive silica gel has better insulating ability than conductive thermally conductive silicone grease, metal thermally conductive sheet, graphite thermally conductive film and other materials, thermally conductive silica gel can be selected as the interface heat conduction medium.

A plurality of fins 212 are vertically disposed on the second surface 217 of the radiator base 211 , wherein the fins 212 face the fan of the outdoor unit of the air conditioner to exchange heat with the airflow generated by the fan. Wherein, the fins 212 of the heat sink 21 can quickly take away the heat on the heat sink base 211 , and the fins 212 can be made of metal aluminum due to its high heat conduction efficiency and low cost. When the fan of the outdoor unit rotates, the airflow blows to the fins 212, and the heat on the fins 212 is distributed evenly and rapidly.

The heat dissipation device 20 of the air conditioner frequency converter of this embodiment first circulates the cooling liquid in the heat sink base 211 by driving the cooling liquid, so that the heat of the heating area on the electric control board 10 of the frequency converter with a small area is quickly and evenly distributed in the heat dissipation area. Then use the ribs 212 and the forced air cooling of the outdoor fan of the air conditioner to exchange heat, so that the inverter air conditioner can work in high frequency mode when the ambient temperature is high, and improve the rapid cooling in high temperature weather ability.

Further, in the cooling device 20 of the air conditioner frequency converter of this embodiment, the liquid inlet 214 and the liquid outlet 215 communicate with the fluid driver 23 and the liquid reservoir 22 through external pipelines to form a cooling circuit, and flow out through the liquid outlet 215 The cooling liquid enters the liquid reservoir 22, and then can continue to be recycled, which can speed up the heat dissipation speed of the heat-generating area on the electric control board 10 of the frequency converter, avoid the problem that the frequency converter is burned out due to high temperature and cause the air conditioner to go down, and improve the efficiency of the air conditioner. Improve the cooling efficiency and service life of the air conditioner, while saving the cost of using cooling liquid.

Fig. 3 is a structural block diagram of an inverter air conditioner 100 according to an embodiment of the present invention. The inverter air conditioner 100 uses the cooling device 20 of the air conditioner inverter of any of the above-mentioned embodiments to dissipate heat from its electric control board 10 . The inverter air conditioner 100 includes: an electric control board 10, on which electric components that generate heat during operation are arranged, so that a heating area is formed on the electric control board 10; Part of the first surface 216 of the base 211 provided with the flow channel 213 for the cooling liquid to flow in the device 20 is attached to the heat-generating area on the electric control board 10 of the frequency converter to dissipate heat from the heat-generating area. Moreover, a plurality of fins 212 are vertically disposed on the second surface 217 of the radiator base 211 , wherein the fins 212 are facing the fan of the outdoor unit of the air conditioner to exchange heat with the airflow generated by the fan.

First, by driving the cooling liquid to circulate in the radiator base 211, the heat of the heat generating area on the electric control board 10 of the small-area frequency converter is quickly and evenly distributed on the radiator base 211, and then the ribs 212 and The forced air cooling of the fan of the outdoor unit of the air conditioner performs heat exchange, so that the inverter air conditioner 100 can work in a high-frequency mode when the ambient temperature is high, improving the rapid cooling capacity in high-temperature weather.

So far, those skilled in the art should recognize that although a number of exemplary embodiments of the present invention have been shown and described in detail herein, they can still be used according to the present invention without departing from the spirit and scope of the present invention. Many other variations or modifications that conform to the principles of the utility model are directly determined or derived from the disclosed content of the new model. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. a kind of heat abstractor of air conditioning frequency converter is it is characterised in that include：

Radiator, its bottom is pedestal, sending out on the subregion of described pedestal first surface and the electric-controlled plate of described converter Thermal region fit, described base interior be provided with for cooled liquid stream move runner, with using described cooling liquid by described The heat that thermal region produces conducts to whole pedestal；And

Multiple fins, the room just to described air-conditioning for the wherein said fin are vertically installed with the second surface of described radiator base The blower fan of outer machine, with the air-flow heat exchange being produced by described blower fan.

2. air conditioning frequency converter according to claim 1 heat abstractor it is characterised in that

Described runner extends along the direction parallel with the first surface of described pedestal is tortuous, and its one end is inlet, and the other end is Liquid outlet.

3. the heat abstractor of air conditioning frequency converter according to claim 2 is it is characterised in that also include：

Reservoir, is arranged at the outside of described radiator, stores described cooling liquid in it.

4. the heat abstractor of air conditioning frequency converter according to claim 3 is it is characterised in that also include：

Fluid driver, is connected with described reservoir, and is connected with the inlet of described runner, will be cold in described reservoir But liquid is delivered to described runner.

5. air conditioning frequency converter according to claim 4 heat abstractor it is characterised in that

Described inlet is connected and is formed with described fluid driver, described reservoir by outside pipeline with described liquid outlet Cooling circuit.

6. air conditioning frequency converter according to claim 5 heat abstractor it is characterised in that

Described cooling circuit is configured to enter described reservoir by the cooling liquid that described liquid outlet flows out.

7. air conditioning frequency converter according to claim 1 heat abstractor it is characterised in that

Described cooling liquid is fluorination coolant.

8. air conditioning frequency converter according to claim 4 heat abstractor it is characterised in that

Described fluid driver is piezoelectric pump.

9. air conditioning frequency converter according to claim 1 heat abstractor it is characterised in that

Offer screw on the first surface of the pedestal of described radiator, the electric-controlled plate of described converter is bolted in described base On seat.

10. a kind of transducer air conditioning is it is characterised in that include：

Electric-controlled plate, described electric-controlled plate is disposed with the electrical equipment generating heat during work so that forming hot zone on described electric-controlled plate Domain；And the heat abstractor of the air conditioning frequency converter any one of claim 1 to 9, internal in wherein said heat abstractor It is provided with the subregion of first surface of the described pedestal of the runner moving for cooled liquid stream and the electric-controlled plate of described converter On heating region laminating, with to described heating region radiate.