CN105890066A - Cooling device for circuit board of outdoor unit of variable frequency air conditioner and electric control box of outdoor unit of variable frequency air conditioner - Google Patents

Cooling device for circuit board of outdoor unit of variable frequency air conditioner and electric control box of outdoor unit of variable frequency air conditioner Download PDF

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Publication number
CN105890066A
CN105890066A CN201610385802.8A CN201610385802A CN105890066A CN 105890066 A CN105890066 A CN 105890066A CN 201610385802 A CN201610385802 A CN 201610385802A CN 105890066 A CN105890066 A CN 105890066A
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CN
China
Prior art keywords
air conditioner
fin
frequency
circuit board
heat
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Granted
Application number
CN201610385802.8A
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Chinese (zh)
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CN105890066B (en
Inventor
刘志龙
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Hisense Shandong Air Conditioning Co Ltd
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Hisense Shandong Air Conditioning Co Ltd
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/20Electric components for separate outdoor units
    • F24F1/24Cooling of electric components
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/02Details

Abstract

The invention discloses a cooling device for a circuit board of an outdoor unit of a variable frequency air conditioner and an electric control box of the outdoor unit of the variable frequency air conditioner. The cooling device for the circuit board of the outdoor unit of the variable frequency air conditioner is used for cooling a plurality of heating electronic elements on the circuit board of the outdoor unit of the variable frequency air conditioner and is composed of a plurality of thermoelectric refrigerating fins, wherein the cold end of each thermoelectric refrigerating fin is fixedly connected with the corresponding heating electronic element through a first cooling fin, the hot end of each thermoelectric refrigerating fin is connected with a direct-current power source through a lead after being connected in series by a plurality of second cooling fins, and the second cooling fins are fixed on a front panel or a wind ring of the outdoor unit. A cold surface end gasket in contact with each heating electronic element of the cooling device is relatively small in floor area, and the amount of the thermoelectric refrigerating fins is increased or reduced according to the amount of the heating electronic elements, so that the structural design of the circuit board is more compact; the heat of each hot surface end gasket is finally taken away by convective air of a fan through the parts such as the front panel and the wind ring in contact with the hot surface end gasket, and structures such as the cooling fins are not needed to be additionally arranged, so that the cost and occupied volume of the cooling device are reduced; and meanwhile, the heat cannot pass through a condenser, so that the load of a system is not increased, and the refrigerating capacity of the original system can not be affected.

Description

A kind of frequency-variable air conditioner outdoor machine circuit board radiating device and electric-controlled box
Technical field
The invention belongs to air-conditioning technical field, specifically, relate to a kind of frequency-variable air conditioner outdoor machine circuit board radiating device and electric-controlled box.
Background technology
In transducer air conditioning product, the part electronic devices and components of board application, running can produce amount of heat, cause local temperature to raise, damage circuit board.
For ensureing the reliability of system, on the one hand to consider to set up heat abstractor, to ensure that the temperature of circuit board is in the range of reliably;On the other hand the output of limiting circuit plate to be considered, to reduce the generation of heat, but the output of this meeting sacrificial system ability, particularly when worst hot case, needing the power that circuit board output is bigger, simultaneously because ambient temperature is higher, the heat dispersal situations of circuit board is poor.
In existing product, conventional heat abstractor is to install radiator below heating electronic component additional, and on the one hand radiator can strengthen area of dissipation by forms such as fins, improves radiating efficiency;The cross-ventilation that still further aspect utilizes outdoor fan to bring carries out forced heat-exchanging to radiator.
It is to allow the coolant after partial throttling by being installed at the radiator below heating electronic component that another kind is applicable to the radiating mode of refrigerating air conditioner in high temperature working condition product, heat is taken away with the coolant of lower temperature, but this radiating mode can reduce refrigerating capacity, reduce efficiency, increase the load of condenser.
Summary of the invention
The present invention is to solve that existing frequency-variable air conditioner outdoor machine heat dissipation for circuit board performance is poor, and the problem increasing the load of condenser, it is proposed that a kind of frequency-variable air conditioner outdoor machine circuit board radiating device, the problems referred to above can be solved.
In order to solve above-mentioned technical problem, the present invention is achieved by the following technical solutions:
A kind of frequency-variable air conditioner outdoor machine circuit board radiating device, for dispelling the heat for several heat-generating electronic elements on frequency-variable air conditioner outdoor machine circuit board, including several thermoelectric modules, the cold end of each thermoelectric module is connected by the first fin and its corresponding heat-generating electronic elements are fixing, after being connected by several second fin in the hot junction of each thermoelectric module, being connected with DC source by wire, described second fin is fixed on front panel or the solar or lunar halo of off-premises station.
The present invention proposes a kind of frequency-variable air conditioner outdoor machine electric-controlled box simultaneously, including top board, base plate, and the hexahedron structure that four sides side plate surrounds, described base plate is fixed with frequency-variable air conditioner outdoor machine circuit board, several heat-generating electronic elements it are provided with on described circuit board, described frequency-variable air conditioner outdoor machine electric-controlled box also includes heat abstractor, described heat abstractor includes several thermoelectric modules, the cold end of thermoelectric module is connected by the first fin and its corresponding heat-generating electronic elements are fixing, after being connected by several second fin in the hot junction of each thermoelectric module, it is connected with DC source by wire, string holes is had on described side plate, for connecting the wire of the second fin through described string holes, described second fin is fixed on front panel or the solar or lunar halo of off-premises station.
Compared with prior art, advantages of the present invention with good effect is: the huyashi-chuuka (cold chinese-style noodles) end pad area occupied that the heating electronic component of this heat abstractor contacts is less, and thermoelectric module is arranged along with the quantity of heat-generating electronic elements carries out increase and decrease, make that board structure of circuit designs is compacter;The heat of hot side end pad is eventually through parts such as the front panel being in contact with it, solar or lunar halo, along with the air of fan convection current is taken away, without setting up the structures such as radiating fin, reduce the cost of heat abstractor and take volume, simultaneously, heat will not pass through condenser, does not increase the load of system, the refrigerating capacity of original system will not be produced impact.
After reading in conjunction with the accompanying the detailed description of embodiment of the present invention, the other features and advantages of the invention will become clearer from.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of example structure schematic diagram of frequency-variable air conditioner outdoor machine circuit board radiating device proposed by the invention;
Fig. 2 is the hot junction mounting structure schematic diagram of frequency-variable air conditioner outdoor machine circuit board radiating device proposed by the invention;
Fig. 3 is a kind of example structure schematic diagram of electric-controlled box proposed by the invention.
Detailed description of the invention
nullOwing on circuit board, mainly electronic component heating produces heat,And owing to off-premises station electric-controlled box is limited by structure in off-premises station,In electric-controlled box, space is less,It is unfavorable for heat radiation,Current radiating mode is the thermovent by opening larger area on electric-controlled box,Or the output of limiting circuit plate,Or allow the coolant after partial throttling lower the temperature,The mode opening thermovent at electric-controlled box is unfavorable for water proof and dust proof,It is under severe outdoor environment particularly with off-premises station,Shorten the service life of circuit board,And other radiating modes or sacrifice air conditioner refrigerating ability,Or increase the load of condenser,It is unfavorable for air conditioning function,Based on this,The present invention proposes a kind of frequency-variable air conditioner outdoor machine circuit board radiating device,Heat-generating electronic elements on circuit board is dispelled the heat by the principle utilizing thermoelectric cooling,And take full advantage of the metal structures such as front panel or the solar or lunar halo of off-premises station,Dispel the heat in the hot junction of auxiliary thermoelectric module,Neither increase additional configurations,Reduce and space is taken and reduces cost.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiment one, the present embodiment proposes a kind of frequency-variable air conditioner outdoor machine circuit board radiating device, as shown in Figure 1, including several thermoelectric modules 11, the cold end of each thermoelectric module 11 is fixed by the heat-generating electronic elements 13 that the first fin 12 is corresponding with it and is connected, after being connected by several second fin 14 in the hot junction of each thermoelectric module 11, being connected with DC source by wire, the second fin 14 is fixed on front panel or the solar or lunar halo of off-premises station.This heat abstractor is consistent with heat-generating electronic elements by the quantity arranging thermoelectric module 11, it is respectively directed to each heat-generating electronic elements dispel the heat, be conducive to radiating efficiency, and take full advantage of the metal structures such as front panel or the solar or lunar halo of off-premises station, dispel the heat in the hot junction of auxiliary thermoelectric module, neither increase additional configurations, reduce and space is taken and reduces cost.Owing to heat is that the other end by thermoelectric module sheds, without considering the heat dispersion of electric-controlled box side, therefore electric-controlled box can make closed structure as required, there is dust-proof, waterproof effect, improve the reliability of circuit board, without additionally arranging dust-proof, waterproof construction, reduce the complexity of electric fitting box structure, heat sheds eventually through parts such as the front panel contacted with the second fin 14, solar or lunar halo, taken away by the air of fan convection current, therefore the hot-side temperature of thermoelectric module 11 is relatively low, can improve the efficiency of thermoelectric cooling;Meanwhile, heat will not pass through condenser, the refrigerating capacity of original system will not be produced impact.
The quantity of thermoelectric module 11 is consistent with heat-generating electronic elements, according to components and parts distribution situation on circuit boards, the cold end of thermoelectric module 11 can dispersed placement therewith, motility is good.
In order to improve the insulating properties between metal structure or the circuit board that thermoelectric module 11 is in contact with it, prevent short circuit phenomenon, between first fin 12 and heat-generating electronic elements 13, and/or, it is provided with insulating heat-conductive pad 15 between second fin 14 and the front panel of frequency-variable air conditioner outdoor machine or solar or lunar halo, insulating heat-conductive pad 15 can use insulating ceramics pad to realize in the present embodiment, has good heat conductivility to reduce thermal resistance while this gasket material insulation simultaneously.
Heat abstractor is particularly suited for DC frequency converting air-conditioner, the series circuit that DC source is composed in series for several thermoelectric modules described provides unidirectional current, the controller of convertible frequency air-conditioner controls the output voltage of described DC source, and the output voltage of described DC source becomes positive correlation with the voltage being applied on direct current generator or compressor.Thermal change that heat dissipation capacity produces with circuit board and be adjusted, the temperature of holding circuit plate one reasonably in the range of;Even and if under worst hot case, it is not necessary to be thought of as ensureing the temperature of circuit board and limiting the output of power, it is ensured that the refrigerating capacity of system.
As shown in Figure 2, preferably the second fin 14 is fixed on solar or lunar halo 16, it is possible to use heat exchange is strengthened in the air flowing that air conditioner room outdoor fan brings, and the second fin 14 is fixed in the present embodiment the outside of described solar or lunar halo 16, in order to avoid affecting air flowing, cause noise problem;As required, can place multiple, can be fixed on solar or lunar halo by modes such as screws, N-type semiconductor and P-type semiconductor make wire form, such as the semiconductor lead 17 in Fig. 2, are fixed on off-premises station front panel 18.
nullEmbodiment two,The present embodiment proposes a kind of frequency-variable air conditioner outdoor machine electric-controlled box,As shown in Figure 3,Including top board 21、Base plate 22、And the hexahedron structure that four sides side plate 23 surrounds,Base plate 22 is fixed with frequency-variable air conditioner outdoor machine circuit board (not shown in Fig. 3),Several heat-generating electronic elements it are provided with on circuit board,Described frequency-variable air conditioner outdoor machine electric-controlled box also includes heat abstractor,Such as Fig. 1、Shown in Fig. 2,Described heat abstractor includes several thermoelectric modules 11,The cold end of each thermoelectric module 11 is fixed by the heat-generating electronic elements 13 that the first fin 12 is corresponding with it and is connected,After being connected by several second fin 14 in the hot junction of each thermoelectric module 11,It is connected with DC source by wire,String holes 24 is had on side plate 23,For connecting the wire of the second fin 14 through string holes 24,Second fin 14 is fixed on front panel or the solar or lunar halo of off-premises station.Only it is required to be on electric-controlled box and stays a string holes 24 through wire, there is dust-proof, waterproof effect, improve the reliability of circuit board, it is not necessary to dust-proof, waterproof construction is additionally set.
The cold end of each thermoelectric module 11 is fixed by the heat-generating electronic elements 13 that the first fin 12 is corresponding with it and is connected, its fixed form can use glue bonding, or as shown in Figure 3, the position corresponding with the first fin 12 on electric-controlled box surface has bolt hole 25, by screwing in screw, first fin 12 is fixed with corresponding heat-generating electronic elements, reliable and stable, preventing off-line, the insulating properties of the first fin 12 can play the effect preventing semiconductor lead from affecting electronic component work simultaneously.
The heat abstractor of the present embodiment includes other architectural features that embodiment is a kind of, can be found in described in embodiment one, does not repeats at this.
Certainly; described above is not limitation of the present invention; the present invention is also not limited to the example above, change that those skilled in the art are made in the essential scope of the present invention, retrofits, adds or replaces, and also should belong to protection scope of the present invention.

Claims (9)

1. a frequency-variable air conditioner outdoor machine circuit board radiating device, for dispelling the heat for several heat-generating electronic elements on frequency-variable air conditioner outdoor machine circuit board, it is characterized in that: include several thermoelectric modules, the cold end of each thermoelectric module is connected by the first fin and its corresponding heat-generating electronic elements are fixing, after being connected by several second fin in the hot junction of each thermoelectric module, being connected with DC source by wire, described second fin is fixed on front panel or the solar or lunar halo of off-premises station.
Frequency-variable air conditioner outdoor machine circuit board radiating device the most according to claim 1, it is characterized in that: between described first fin and heat-generating electronic elements, and/or, it is provided with insulating heat-conductive pad between the second fin and the front panel of frequency-variable air conditioner outdoor machine or solar or lunar halo.
Frequency-variable air conditioner outdoor machine circuit board radiating device the most according to claim 2, it is characterised in that: described insulating heat-conductive pad is insulating ceramics pad.
Frequency-variable air conditioner outdoor machine circuit board radiating device the most according to claim 1, it is characterized in that: described convertible frequency air-conditioner is DC frequency converting air-conditioner, DC source provides unidirectional current for described thermoelectric module, the controller of convertible frequency air-conditioner controls the output voltage of described DC source, and the output voltage of described DC source becomes positive correlation with the voltage being applied on direct current generator or compressor.
5. according to the frequency-variable air conditioner outdoor machine circuit board radiating device described in any one of claim 1-4, it is characterised in that: described second fin is fixed on the outside of described solar or lunar halo.
6. a frequency-variable air conditioner outdoor machine electric-controlled box, it is characterized in that: include top board, base plate, and the hexahedron structure that four sides side plate surrounds, described base plate is fixed with frequency-variable air conditioner outdoor machine circuit board, several heat-generating electronic elements it are provided with on described circuit board, described frequency-variable air conditioner outdoor machine electric-controlled box also includes heat abstractor, described heat abstractor includes several thermoelectric modules, the cold end of each thermoelectric module is connected by the first fin and its corresponding heat-generating electronic elements are fixing, after being connected by several second fin in the hot junction of each thermoelectric module, it is connected with DC source by wire, string holes is had on described side plate, for connecting the wire of the second fin through described string holes, described second fin is fixed on front panel or the solar or lunar halo of off-premises station.
Frequency-variable air conditioner outdoor machine electric-controlled box the most according to claim 6, it is characterised in that: between described first fin and heat-generating electronic elements, and/or, it is provided with insulating heat-conductive pad between the second fin and the front panel of frequency-variable air conditioner outdoor machine or solar or lunar halo.
Frequency-variable air conditioner outdoor machine electric-controlled box the most according to claim 7, it is characterised in that: described insulating heat-conductive pad is insulating ceramics pad.
Frequency-variable air conditioner outdoor machine electric-controlled box the most according to claim 6, it is characterised in that: described second fin is fixed on the outside of described solar or lunar halo.
CN201610385802.8A 2016-06-03 2016-06-03 A kind of frequency-variable air conditioner outdoor machine circuit board radiating device and electric-controlled box Active CN105890066B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108227350A (en) * 2016-12-14 2018-06-29 台达电子工业股份有限公司 Digital micro reflective projector
CN110736155A (en) * 2019-09-30 2020-01-31 青岛海尔空调器有限总公司 Outdoor machine of air conditioner
CN111442439A (en) * 2020-03-20 2020-07-24 海信(山东)空调有限公司 Variable frequency air conditioning system
WO2021115249A1 (en) * 2019-12-12 2021-06-17 维沃移动通信有限公司 Circuit board apparatus and electronic device

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CN103957679A (en) * 2014-03-27 2014-07-30 美的集团股份有限公司 Electric control box, heat radiation system applied to electric control box and control method thereof
CN105042722A (en) * 2015-06-11 2015-11-11 珠海格力电器股份有限公司 Radiator, control method and device of same and air conditioner
CN205678790U (en) * 2016-06-03 2016-11-09 海信(山东)空调有限公司 A kind of frequency-variable air conditioner outdoor machine circuit board radiating device and electric-controlled box

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JPH06209179A (en) * 1993-01-08 1994-07-26 Mitsubishi Electric Corp Electronic machinery using thermoelectric cooling element
CN202018102U (en) * 2011-04-22 2011-10-26 王增福 Semi-conductor heating and cooling air conditioner
CN202085437U (en) * 2011-06-27 2011-12-21 Tcl空调器(中山)有限公司 Variable-frequency air conditioner heat radiator
CN103957679A (en) * 2014-03-27 2014-07-30 美的集团股份有限公司 Electric control box, heat radiation system applied to electric control box and control method thereof
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CN205678790U (en) * 2016-06-03 2016-11-09 海信(山东)空调有限公司 A kind of frequency-variable air conditioner outdoor machine circuit board radiating device and electric-controlled box

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108227350A (en) * 2016-12-14 2018-06-29 台达电子工业股份有限公司 Digital micro reflective projector
CN110736155A (en) * 2019-09-30 2020-01-31 青岛海尔空调器有限总公司 Outdoor machine of air conditioner
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WO2021115249A1 (en) * 2019-12-12 2021-06-17 维沃移动通信有限公司 Circuit board apparatus and electronic device
CN111442439A (en) * 2020-03-20 2020-07-24 海信(山东)空调有限公司 Variable frequency air conditioning system

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