CN1940410A - Outdoor unit of air conditioner - Google Patents

Abstract

An air conditioner outdoor unit comprises a compressor, a condenser, an outdoor fan and input and output assemblies. The condenser consists of several vertical and parallel set cooling fins and several sets of coilers going through horizontally the cooling fins along both sides of the cooling fins. One end of the last set of coilers in the lower part next to the outside of the outdoor unit is connected with the end of the lowerest part branch pipe of multi-row pipes and the other end next to the inside of the outdoor unit is connected with the output pipe locating in the lowerest part.

Description

Air-conditioner outdoor unit

Technical field

The present invention relates to a kind of air-conditioner, particularly relate to a kind of air-conditioner outdoor unit that can improve the defrosting ability.

Background technology

Air-conditioner is a kind of device that makes its inner refrigerant carry out the refrigeration of being made up of compression process, condensation process, expansion process and evaporation process or heat circulation.Fig. 1 is that the air-conditioner of prior art is formed schematic diagram.As shown in Figure 1, the air-conditioner of this prior art mainly comprises compressor 1, condenser 2, the expansion valve 3 that is arranged in the off-premises station and is arranged on evaporimeter 4 in the indoor set.When air-conditioner carries out kind of refrigeration cycle, compressed machine 1 compression and the refrigerant that becomes high-temperature high-pressure state at first flows to condenser 2 by cross valve 5, this refrigerant will dispel the heat to the outside in condenser 2, and when flowing through expansion valve 3, significantly reducing its temperature and pressure, this low temperature, low pressure refrigerant are with inflow evaporator 4 then.This refrigerant will absorb the heat of surrounding air in evaporimeter 4, flow back to again in the compressor 1 through cross valve 5 and fluid reservoir 6 at last, circulate so repeatedly.It is then opposite with above-mentioned kind of refrigeration cycle process to heat circulation.Fig. 2 is the air-conditioner outdoor unit part-structure schematic diagram of prior art.As shown in Figures 1 and 2, this air-conditioner outdoor unit mainly comprises compressor 1, condenser 2, outdoor fan 7, input module 8 and output precision 9.Wherein, input module 8 by vertically disposed multi coil 10 and from a side horizontal-extending of multi coil 10 and a plurality of arms 11 that form constitute.Output precision 9 is made up of with the knockouts 13 that link to each other with a plurality of efferent duct 12 ends a plurality of efferent ducts that be arranged in parallel 12.Then vertical by multi-disc and the fin 14 that be arranged in parallel of condenser 2 and many groups are formed along the coil pipe 15 that the both sides level of fin 14 runs through fin 14.In the process that refrigerant that flows in the coil pipe 15 and surrounding air are carried out heat exchange, understand accumulating in the surface of condenser 2, and condense into condensed water because of inside and outside temperature difference makes airborne moisture.This condensed water will rely on gravity to drip along fin 14 downwards, drain into the outside of off-premises station then by osculum.But there is following point in the air-conditioner outdoor unit of this prior art: when the winter air-conditioning device heats circulation time, the condensed water on condenser 2 surfaces might be crossed the low phenomenon of freezing that occurs because of outdoor temperature in the off-premises station, and near the off-premises station outside promptly among the figure surface on right side than close off-premises station inboard promptly among the figure the icing situation in surface in left side serious, particularly the situation of outer lower portion is more outstanding.When ice sheet reaches certain thickness and when influencing the heat exchange effect of condenser 2, air-conditioner stops to heat circulation under the microprocessor control of portion within it, and the short time transfers kind of refrigeration cycle to remove the frost on condenser 2 surfaces, promptly carries out Defrost operation.But, when defrosting, from the HTHP refrigerant of compressor 1 is to enter its inside through the arm on the multi coil 10 11 end near every group of coil pipe 15 of off-premises station inboard from the condenser 2 all, flow to the efferent duct 12 from the other end then near the off-premises station outside, be that condenser 2 inboards that the higher relatively refrigerant of temperature is first and icing situation is not too serious contact, temperature has descended much when waiting to flow to the comparatively serious outside of the situation of freezing, so not only can influence the effect of defrosting, and required defrosting time is longer.

Summary of the invention

In order to address the above problem, to the object of the present invention is to provide and a kind ofly can improve the defrosting ability, thereby can shorten the air-conditioner outdoor unit of Defrost operation time.

In order to achieve the above object, air-conditioner outdoor unit provided by the invention mainly comprises compressor, condenser, outdoor fan, input module and output precision; Wherein, input module by vertically disposed multi coil and from a side horizontal-extending of multi coil and a plurality of arms that form constitute; Output precision is made up of with the knockout that links to each other with a plurality of efferent ducts ends a plurality of efferent ducts that be arranged in parallel; Then vertical by multi-disc and the fin that be arranged in parallel of condenser and many groups are formed along the coil pipe that the both sides level of fin runs through fin, link to each other with the arm of multi coil is terminal respectively near an end of off-premises station inboard on the wherein superposed some groups of coil pipes, and join with the end of many efferent ducts respectively near the other end outside the off-premises station; Last end of organizing the close off-premises station outside on coil pipe that is positioned at the bottom links to each other with the foot arm of multi coil is terminal, and the other end of close off-premises station inboard then joins with the efferent duct that is positioned at foot.

The length of described multi coil foot arm is greater than the length of its other arm of top.

Air-conditioner outdoor unit provided by the invention is to flow into lower end outside the most serious close the off-premises station of the situation of freezing earlier from the HTHP refrigerant of compressor when utilizing mode with the input of one group of coil pipe of condenser foot and output exchange to make Defrost operation, not only can improve the defrosting ability like this, thereby can shorten the Defrost operation time, and need not to change the structure that has air-conditioner now, therefore can improve the performance of air-conditioner.

Description of drawings

Below in conjunction with the drawings and specific embodiments air-conditioner outdoor unit provided by the invention is elaborated.The parts identical with prior art use identical symbol, and omit its explanation of carrying out.

Fig. 1 is that the air-conditioner of prior art is formed schematic diagram.

Fig. 2 is the air-conditioner outdoor unit part-structure schematic diagram of prior art.

Fig. 3 is an air-conditioner outdoor unit part-structure schematic diagram provided by the invention.

The specific embodiment

As Fig. 3 and shown in Figure 1, air-conditioner outdoor unit provided by the invention mainly comprises compressor 1, condenser 2, outdoor fan 7, input module 8 and output precision 9; Wherein, input module 8 by vertically disposed multi coil 10 and from a side horizontal-extending of multi coil 10 and a plurality of arms 11 that form constitute; Output precision 9 is made up of with the knockouts 13 that link to each other with a plurality of efferent duct 12 ends a plurality of efferent ducts that be arranged in parallel 12; Then vertical by multi-disc and the fin 14 that be arranged in parallel of condenser 2 and many groups are formed along the coil pipe 15 that the both sides level of fin 14 runs through fin 14, on the wherein superposed some groups of coil pipes 15 near an end of off-premises station inboard respectively with 11 terminal linking to each other of arm of multi coil 10, and join with the end of many efferent ducts 12 respectively near the other end outside the off-premises station; Last end of organizing the close off-premises station outside on coil pipe 15 that is positioned at the bottom links to each other with the foot arm 11 ' end of multi coil 10, and the other end of close off-premises station inboard then joins with the efferent duct 12 ' that is positioned at foot.The length of described multi coil 10 foot arms 11 ' is greater than the length of other arm 11 of its top.Heat circulation time when winter, compressed machine 1 compression and the refrigerant that becomes high-temperature high-pressure state at first flows to the evaporimeter 4 in the indoor set under the guiding of cross valve 5.This refrigerant will carry out heat exchange and emit heat with ambient air in evaporimeter 4, then through expansion valve 3 reduce temperature and pressures after efferent duct 12 from off-premises station on the condenser 2 on the superposed some groups of coil pipes 15 end near the off-premises station outside flow into its inside, the input position that is positioned at bottom one group of coil pipe 15 then with its on respectively to organize the input position of coil pipe 15 just the opposite.The refrigerant of condenser 2 of flowing through will carry out heat exchange with outdoor air and absorb the heat of this air, flow back to again in the compressor 1 through cross valve 5 and fluid reservoir 6 at last, and so circulation can remain on the interior space under the suitable temperature repeatedly.When the condensed water of 2 surface aggregations of condenser in the off-premises station is crossed low and icing when reaching certain thickness because of temperature, stop to heat circulation under the air-conditioner microprocessor control that portion is provided with within it, and the short time transfers kind of refrigeration cycle to remove the frost on condenser 2 surfaces, promptly carries out Defrost operation.At this moment, under the guiding of cross valve 5, will offer every group of coil pipe 15 of condenser 2 from the HTHP refrigerant of compressor 1 through multi coil 10 and many arms 11, the input of wherein superposed some groups of coil pipes 15 is positioned at the inboard of condenser 2, and the input of bottom one group of coil pipe 15 is positioned at the outside of condenser 2, this HTHP refrigerant will touch the most serious outer lower portion of situation of freezing on the condenser 2 at first like this, thereby the ice sheet at position can be melted rapidly and removes, not only can improve the defrosting ability like this, and can shorten defrosting time, thereby can cut down the consumption of energy.Air-conditioner outdoor unit particularly provided by the invention almost need not to change original structure, only needs the foot arm on the multi coil 10 and foot efferent duct changed a little get final product, so simple in structure, and can improve the performance of air-conditioner.

Claims (2)

1, a kind of air-conditioner outdoor unit mainly comprises compressor (1), condenser (2), outdoor fan (7), input module (8) and output precision (9); Wherein, input module (8) is made of vertically disposed multi coil (10) and a plurality of arms (11) of forming from a side horizontal-extending of multi coil (10); Output precision (9) is made up of with the knockout (13) that links to each other with a plurality of efferent ducts (12) end a plurality of efferent ducts that be arranged in parallel (12); The then vertical and fin (14) that be arranged in parallel of condenser (2) and organize the coil pipe (15) that runs through fin (14) along the both sides level of fin (14) more and form by multi-disc, the end that wherein superposed some groups of coil pipes (15) are gone up near the off-premises station inboard links to each other with the arm (11) of multi coil (10) is terminal respectively, and joins with the end of many efferent ducts (12) respectively near the other end outside the off-premises station; It is characterized in that: last end of organizing the upward close off-premises station of coil pipe (15) outside that is positioned at the bottom on the described condenser (2) links to each other with the foot arm (11 ') of multi coil (10) is terminal, and the other end of close off-premises station inboard then joins with the efferent duct (12 ') that is positioned at foot.

2, air-conditioner outdoor unit according to claim 1 is characterized in that: the length of described multi coil (10) foot arms (11 ') is greater than the length of other arm of its top (11).

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