CN106594902A - Frost-free outdoor unit of refrigerating heat pump type air conditioner - Google Patents

Frost-free outdoor unit of refrigerating heat pump type air conditioner Download PDF

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Publication number
CN106594902A
CN106594902A CN201510660156.7A CN201510660156A CN106594902A CN 106594902 A CN106594902 A CN 106594902A CN 201510660156 A CN201510660156 A CN 201510660156A CN 106594902 A CN106594902 A CN 106594902A
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CN
China
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air
compressor
plane
electrical control
frequency conversion
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CN201510660156.7A
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Chinese (zh)
Inventor
孙海潮
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孙海潮
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Priority to CN201510660156.7A priority Critical patent/CN106594902A/en
Publication of CN106594902A publication Critical patent/CN106594902A/en

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    • 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B47/00Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/006Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost

Abstract

The invention discloses a frost-free outdoor unit of a refrigerating heat pump type air conditioner. The frost-free outdoor unit of the refrigerating heat pump type air conditioner comprises an outdoor unit housing, an evaporator, a blower, an intermediate separating plate, a compressor and variable-frequency electrical control module space, a variable-frequency electric control box and a compressor. The frost-free outdoor unit of the refrigerating heat pump type air conditioner is characterized in that an induced air channel air inlet is formed in an air outlet of the blower; the plane formed by the air outlet of the blower is treated as a projecting surface, and the projections, on the projecting surface, of the plane formed by the induced air channel air inlet and the plane formed by the air outlet of the blower, can form an overlapped surface; an induced air channel passes through the intermediate separating plate to communicate with the compressor and variable-frequency electric control module space; an air collecting cover which is connected with a heating air supplying pipe is arranged on the outdoor unit housing section in the compressor and variable-frequency electric control module space; air from the blower can enter the compressor and variable-frequency electric control module space through the induced air channel; the air sequentially flows through the compressor and the variable-frequency electric control box and then enters the air collecting cover to be conveyed to an air feeding side of the evaporator through the heating air supplying pipe so as to be exhausted. The frost-free outdoor unit of the refrigerating heat pump type air conditioner has the characteristics of frost-free heating, dispersing heat of a variable-frequency electric control module and the compressor, and being high in evaporating heating capacity, and high in air conditioning energy efficiency.

Description

A kind of frostless air-conditioner outdoor unit of refrigerating heat pump type

Technical field

The invention belongs to air-conditioning technique field, only relates to a kind of frostless air-conditioner outdoor unit of refrigerating heat pump type.

Background technology

Existing refrigerating heat pump type air-conditioning includes indoor set and off-premises station, and during refrigeration, indoor set is evaporimeter, and indoor set evaporation endothermic, off-premises station is condenser, condenses heat release;Conversely, indoor set is condenser when heating, heat release is condensed, off-premises station is evaporimeter, evaporation endothermic.Condenser, evaporimeter is referred to as heat exchanger.Off-premises station is generally divided into two spaces by air-conditioner outdoor unit by median septum, a space positioned at median septum side arranges blower fan and heat exchanger, the present invention is referred to as blower fan and heat exchanger space, space is relatively large, blower fan inlet and outlet is with off-premises station outside in unlimited open state, and a space of median septum opposite side arranges compressor and electronic control module, the present invention is referred to as compressor and electronic control module space, space is relatively small, compressor and electronic control module space surrounding are enclosed by median septum with outdoor machine shell, with closed state is lain substantially in outside outdoor set cabinet, if convertible frequency air-conditioner, electronic control module also includes frequency-variable module.Frequency conversion electrical control module is arranged in frequency conversion electrical control box; no matter freeze or heat; during operation of air conditioner; compressor and frequency conversion electrical control module will produce amount of heat; the heat that especially frequency-variable module is produced is bigger; it is that whole off-premises station produces the maximum position of temperature highest quantity of heat production; as radiated not in time; frequency conversion electrical control module cannot normal work even burn; also compressor performance and service life can be affected when compressor temperature is too high; over-temperature protection device can be all triggered when frequency-variable module and too high compressor temperature, forces air-conditioning out of service, affect air-conditioning to use.Therefore must radiate to frequency conversion electrical control module and compressor, usual frequency conversion electrical control module adopts both radiating modes:1, air-cooled radiator radiating is set on the frequency conversion electrical control box that frequency conversion electrical control module is set, radiator can against median septum design in blower fan and heat exchanger side, electric-controlled box is erected on median septum, but electric-controlled box major part is still located at compressor and frequency conversion electrical control module side, radiator can also against median septum and be arranged on compressor and electronic control module side, no matter radiator is arranged on that side of median septum, the negative pressure pressure reduction formed when being all and being operated by blower fan, so that outdoor air discharges off-premises station after radiator heat exchange radiating by radiator or compressor and electronic control module side air Jing heat exchanger by blower fan;2, frequency conversion electrical control module heat dissipating is cooled down by arranging coolant loop, and compressor is usually natural heat dissipation and arranges heat abstractor radiating, above-mentioned radiating mode, all it is the heat dissipation for distributing on frequency conversion electrical control module and compressor to outside off-premises station, the heat that frequency conversion electrical control module and compressor are distributed is that by consuming electric energy, this part energy is directly discharged outside off-premises station, has wasted energy.When frequency conversion electrical control module in existing convertible frequency air-conditioner adopts wind-cooling heat dissipating,Blower fan and heat exchanger sections are with off-premises station outside in completely open state,For the needs of sufficient heat exchange,Heat exchanger air intake surface needs to be designed to larger,So the negative-pressure inlet region that blower fan is formed when operating is very big,For whole heat exchanger air intake surface,And radiator only accounts for wherein small part,And positioned at the less fringe region of fan blade inlet side air intake flow,Thus flow through the air quantity very little of radiator,Wind-cooling heat dissipating efficiency is very low,Especially when summer environment temperature is higher,Frequency conversion electrical control module often radiates bad,Easily cause whole system overheat protector during long-time hot operation and out of service,Frequency conversion electrical control module runs under such conditions for a long time service life can be shortened,Even can burn out,And refrigerant cooling frequency conversion electrical control module,Temperature difference when refrigerant temperature works with frequency conversion electrical control module is very big,Easily form condensation on frequency conversion electrical control Modular surface and automatically controlled circuit board,So as to bring the hidden danger of frequency conversion electrical control module circuitry plate short circuit.During air-conditioning heating, evaporimeter section of jurisdiction surface can produce condensation water, and when ambient air temperature is less than 5 DEG C, condensation water will condense into Bao Shuan, environment temperature is lower, frosting is more serious, or even can produce thick frost, and frosting and frost can reduce and block air duct between fin, increase air flow resistance, cause evaporation and heat-exchange ability drastically to decline, or even air-conditioning can be caused to quit work to heat, it is therefore necessary to which defroster defrosting is set.The common Defrost method of air-conditioning has four-way change-over valve to defrost, hot gas bypass defrosting, and electrothermal component defrosts three kinds.Four-way change-over valve defrosts to interrupt and heats, hot gas bypass defrosting can be reduced to indoor heat supply, compressor can be directed at when outside air temperature is relatively low liquid hit phenomenon reduction compressor performance occur or even damage compressor, and electrothermal component defrosting effect is good, be not in that first two is interrupted heat supply or reduces the situation of heat supply, but electrothermal component defrosts, power consumption is larger, and defrosting expense cost is higher.Additionally, it is also a problem for being difficult to accurate control when to start defrosting, defrosting is too late, and frost layer is too thick on evaporimeter, and air channel obstruction between fin, air quantity is reduced, and system heating efficiency declines, and power consumption increases;Defrosting is too early, and also non-frosting or a small amount of frosting, will increase defrosting frequency on evaporimeter, will also result in the decline of system heating efficiency, increases power consumption.

The content of the invention

1, it is an object of the invention to provide a kind of frostless air-conditioner outdoor unit of refrigerating heat pump type, after starting of air conditioner work, in the case of guaranteeing that air-conditioning does not interrupt and do not reduce and normally heat, particularly in the situation for not increasing energy consumption off-premises station evaporimeter can be made to exempt frosting and become frostless air-conditioning, it is difficult to which accurately the problem of control startup defrosting time is also just readily solved.

2, do not increase energy consumption, so as to improve the evaporation efficiency of evaporimeter so that air-conditioning heating amount is increased, can improve the efficiency of air-conditioning, power and energy saving to the offer of off-premises station evaporimeter moment higher than the air intake of environment temperature.

3, not increasing energy consumption can lower the temperature to compressor and frequency conversion electrical control module heat dissipating, so that compressor and frequency conversion electrical control module are outer in a comparatively ideal operating mode all the time, compressor and frequency conversion electrical control module operating efficiency are effectively improved so as to improve the efficiency of air-conditioning, compressor and frequency conversion electrical control module normal service life is also ensure that.

The goal of the invention of the present invention is accomplished by:A kind of frostless air-conditioner outdoor unit of refrigerating heat pump type, including outdoor set cabinet, evaporimeter, blower fan, median septum, compressor and frequency conversion electrical control module volume, frequency conversion electrical control box, compressor is characterized in that:In fan outlet, air inducing air inlet of air duct is set, the plane formed with fan outlet is as perspective plane, projection of the plane that the plane that air inducing air inlet of air duct is formed is formed with fan outlet on the perspective plane forms faying surface, air inducing air channel communicates through median septum with compressor and frequency conversion electrical control module volume, wind-collecting cover is set in the outdoor set cabinet of compressor and frequency conversion electrical control module volume, wind-collecting cover connection heats air-supply airduct, blower fan air-out enters compressor and frequency conversion electrical control module volume by air inducing air channel, flow through compressor, after frequency conversion electrical control box, the outflow of evaporimeter inlet side is transported to into wind-collecting cover by air-supply airduct is heated.

What the goal of the invention of the present invention can also be realized by such mode:A kind of frostless air-conditioner outdoor unit of refrigerating heat pump type, including outdoor set cabinet, condenser, blower fan, median septum, compressor and frequency conversion electrical control module volume, frequency conversion electrical control box, compressor is characterized in that:In fan outlet, air inducing air inlet of air duct is set, the plane formed with fan outlet is as perspective plane, projection of the plane that the plane that air inducing air inlet of air duct is formed is formed with fan outlet on the perspective plane forms faying surface, air inducing air channel communicates through median septum with compressor and frequency conversion electrical control module volume, refrigeration exhaust air flue is set between compressor and outdoor set cabinet side plate, refrigeration exhaust air flue air outlet is communicated through outdoor set cabinet with off-premises station space outerpace, blower fan air-out enters compressor and frequency conversion electrical control module volume by air inducing air channel, flow through compressor, after frequency conversion electrical control box, off-premises station is discharged into refrigeration exhaust air flue.

The present invention is in the plane formed with fan outlet as perspective plane, when projection of the plane that the plane that formed to air inducing air inlet of air duct is formed with fan outlet on the perspective plane forms the setting of faying surface, faying surface area is more than the 20% of the projected area of plane that fan outlet formed on the perspective plane.

The present invention is provided with electrothermal tube in wind-collecting cover.

The present invention refrigeration exhaust air flue and wind-collecting cover on be provided with can open and close air door.

Wind-collecting cover of the present invention and air-supply airduct are made using light weight, fast, corrosion resistant aluminum alloy material of conducting heat.

The present invention is provided with refrigeration exhaust air flue dividing plate between compressor and outdoor set cabinet side plate.

During air-conditioning heating,Refrigeration exhaust air flue air door is closed,Wind-collecting cover door opening,Off-premises station blower fan starts,The heat release Jing after evaporimeter heat exchange of air outside the off-premises station of suction turns cold and becomes cold air,Then off-premises station is discharged by blower fan,The air that blower fan is discharged carries stronger blast,Thus portion of air therein will flow the air inducing air inlet of air duct of air inlet fan air outlet setting,Collect into compressor and frequency conversion electrical control module volume in Jing air inducing air channel,Flowing through compressor,During frequency conversion electrical control box,Absorb compressor case,Heat heating on frequency conversion electrical control box becomes hot-air,The exhaust air flue air door that now freezes is closed,Wind-collecting cover then becomes compressor and the unique air-out passage of frequency conversion electrical control module volume,Hot-air will collect stream enter wind-collecting cover Jing heat air-supply airduct be transported to evaporimeter inlet side discharge,Mixing air is formed after mixing with the air outside blower fan and evaporimeter space,The mixing air temperature of formation is higher than the air outside blower fan and heat exchanger space,That is ambient air temperature,Mixing air is sucked by blower fan,Flow through and discharge off-premises station after evaporation tube and heat-exchange fin on evaporimeter,Temperature flows through the evaporation tube and heat-exchange fin evaporation heat exchange on evaporimeter higher than the mixing air of ambient air temperature,Improve the evaporation efficiency of evaporimeter,Improve heating capacity,At the same time,Above-mentioned absorption compressor case,Heat heating on frequency conversion electrical control box becomes hot-air,Play to compressor,The effect of frequency conversion electrical control module heat dissipating cooling.

During air-conditioning heating, evaporimeter section of jurisdiction surface can produce condensation water, when ambient air temperature is less than 5 DEG C, evaporimeter section of jurisdiction surface temperature can be less than 0 DEG C, condensation water will condense into Bao Shuan, therefore, when air-conditioning is heated in ambient air temperature less than 5 DEG C, as long as environment temperature is not low when the mixing air temperature formed after the above-mentioned air with outside blower fan and evaporimeter space mixes is changed more than 0 DEG C, eliminate the need for producing the possibility of frosting on off-premises station evaporimeter, frostless the heating of air-conditioning and become frostless air-conditioning, now will not only interrupt or reduce to indoor heating, and because temperature flows through evaporator evaporation heat exchange higher than the mixing air of ambient air temperature, improve the evaporation energy of evaporimeter, can also increase to indoor heat supply;When the environment temperature for more cold climate occur causes the temperature of mixing air to be less than 0 DEG C, because the temperature of mixing air is consistently higher than environment temperature, off-premises station evaporimeter section of jurisdiction surface can coagulate white icing while in being less than in 0 DEG C of environment, but the speed that solidifying frost freezes will be substantially reduced, so as to reduce the open frequency and defrosting time of subsidiary defrosting device, power and energy saving.The present invention is by arranging electrothermal tube mode in wind-collecting cover, raising flows through the air themperature of wind-collecting cover and comes for the defrosting of evaporimeter section of jurisdiction surface, open frequency and defrosting time due to reducing subsidiary defrosting device, under identical operating mode, the electrothermal tube defrosting power consumption of the present invention is reduced, defrosting time is short and speed is fast, the comfort level of user when improve air-conditioning heating.No matter air-conditioning is also above being heated under 5 DEG C of environment temperature in air themperature less than 5 DEG C, the present invention flows through the temperature that the temperature of the mixing air of evaporimeter is always above surrounding air, so that the evaporation efficiency of off-premises station is improved, heat efficiency, power and energy saving are improve.

During air conditioner refrigerating,Refrigeration exhaust air flue door opening,Wind-collecting cover air door is closed,Under off-premises station fan action,Heat absorption after the condensed device heat exchange of air outside off-premises station becomes hot-air,Off-premises station is discharged by blower fan,As early as possible temperature improves into hot-air to the air of off-premises station,But the temperature of hot-air is consistently lower than more than 12 DEG C of frequency conversion electrical control box surface temperature,More below compressor case surface temperature,The temperature of hot-air that temperature I guess in the case where air conditioning condition allows 43 DEG C of highest use environment temperature is also only at 52 DEG C or so,And compressor case surface temperature now is up to 100 DEG C or so,Frequency-variable module temperature in frequency conversion electrical control box can close frequency-variable module 75 DEG C of the limit of working temperature,Therefore,Hot air temperature is still far below compressor case and the temperature on frequency conversion electrical control box surface,The air inducing air inlet of air duct arranged by fan outlet by a part of hot-air that blower fan is discharged,Collect into compressor and become automatically controlled module volume in Jing air inducing air channel,Through compressor,During frequency conversion electrical control box,It is absorbed by compressor case,Heat on frequency conversion electrical control box becomes hotter hot-air,Now wind-collecting cover is closed,Exhaust air flue of then freezing becomes compressor and the unique air-out passage of frequency conversion electrical control module volume,Hot-air will flow out off-premises station by refrigeration exhaust air flue,It is reached for the purpose of compressor and frequency conversion electrical control box radiating and cooling,Compressor and frequency conversion electrical control box obtain radiating and cooling,So that the frequency conversion electrical control components and parts on compressor and frequency conversion electrical control box run all the time under a suitable temperature case,Improve compressor and frequency conversion electrical control components and parts performance and used life.

If air-conditioning uses the combustible refrigerant system such as R290 of day by day popularization and application,After the refrigerant line generation leakage in compressor of outdoor unit and frequency conversion electrical control module volume or the various tiny leakages for being tightly connected place being difficult to avoid that are accumulated to finite concentration,Combustible refrigerant enters frequency conversion electrical control box,It is possible to occur the sparking of the electronic devices and components in frequency conversion electrical control box to ignite the crisis of blast,The air-conditioning of the present invention,No matter heat or during refrigerating operaton,Always there is the air inducing air inlet of air duct that the portion of air for discharging blower fan is arranged by fan outlet,Collect into compressor and frequency conversion electrical control module volume,Through compressor,Off-premises station is discharged after frequency conversion electrical control box,If generation cold-producing medium is leaked,The cold-producing medium of leakage also will at any time be discharged off-premises station,There is the hidden danger that leakage may set off an explosion so as to eliminate combustible refrigerant system air conditioner off-premises station.

The air inducing air channel of the present invention communicates through median septum with compressor and frequency conversion electrical control module volume, is also designed to bypass median septum and communicates with compressor and frequency conversion electrical control module volume, and both do not have substantive difference.Air inducing air channel has air inlet and air outlet, air inducing air channel communicates through median septum with compressor and frequency conversion electrical control module volume, namely air inducing duct outlet is communicated with compressor and frequency conversion electrical control module volume, in fan outlet, air inducing air inlet of air duct is set, refer to air inducing air inlet of air duct against fan outlet, fan outlet refers to that the cross section of blower fan exhaust air flue vertical with blower fan air-out direction during fan air channel is discharged in blower fan air-out, the air port that the blower fan exhaust air flue cross section is formed is the fan outlet of indication in the present invention, when air inducing air inlet of air duct is arranged in blower fan exhaust air flue, fan outlet now is the cross section of the blower fan exhaust air flue at blower fan air-out and air inducing air inlet of air duct foremost contacting position, the essence that this kind is arranged is identical with fan outlet setting air inducing air inlet of air duct.Blower fan exhaust air flue and the air inducing air channel mode cross section shape communicated with compressor and frequency conversion electrical control module volume through median septum may be designed as circle, square, the other shapes such as rectangle, as long as it is smooth to meet ventilation.

In the plane formed with fan outlet as perspective plane, when projection of the plane that the plane that air inducing air inlet of air duct is formed is formed with fan outlet on the perspective plane forms faying surface, faying surface can be that the part perspective plane in two projections overlaps, or the perspective plane that air inducing air inlet of air duct is formed has been forgiven on perspective plane of the plane that formed of fan outlet on the perspective plane.Without faying surface,The air quantity that air inducing air inlet of air duct introduces fan outlet is very little,Air quantity into compressor and frequency conversion electrical control module volume is very little,Even without introduction air quantity,The goal of the invention of the present invention cannot be reached,Only form faying surface,Air inducing air inlet of air duct could introduce the air quantity of fan outlet,The goal of the invention for realizing the present invention could be started,If the air quantity that air inducing air inlet of air duct introduces fan outlet is too small,Into after compressor and frequency conversion electrical control module volume,It is impossible to and compressor and frequency conversion electrical control module sufficient heat exchange,The effect for reaching present invention invention is just poor,Projected area of the plane for only being formed more than fan outlet in above-mentioned faying surface area on the perspective plane more than 20% when,Air inducing air inlet of air duct could introduce the larger air-out volume of fan outlet,Into after compressor and frequency conversion electrical control module volume,Could be with compressor and frequency conversion electrical control module sufficient heat exchange,Invention improving eyesight and invention effect of the present invention on the premise of energy consumption is not increased could preferably be reached,The faying surface of formation is bigger,The blower fan air output that air inducing air inlet of air duct is introduced is bigger,Realize that the goal of the invention on the premise of energy consumption is not increased and invention effect of the present invention are also better,But faying surface need not be as big as to the 100% of the projected area of plane that fan outlet formed on the perspective plane,The perspective plane that i.e. air inducing air inlet of air duct is formed is identical with the perspective plane that fan outlet is formed,Now,The air-out of fan outlet will be introduced all by air inducing air inlet of air duct,It is not need so big air quantity with the air of compressor and frequency conversion electrical control box heat exchange,The present invention recommends the 60% of the projected area of plane that faying surface formed less than fan outlet on the perspective plane.Just because of this design of the present invention, take full advantage of fan outlet air-out blast it is stronger the characteristics of, so that the air output of the fan outlet of air inducing air inlet of air duct introduction is larger, so as to without the need for arranging special air inducing fan air inducing in addition, so as to bring do not increase energy consumption on the premise of achieve that goal of the invention and reach the advantage of better effects.

Wind-collecting cover is set in the outdoor set cabinet of compressor and frequency conversion electrical control module volume, also wind-collecting cover can be set in median septum or compressor and other positions of frequency conversion electrical control module volume, is all up the air-supply airduct that heats by air by being connected with wind-collecting cover and is transported to the substantive purpose that evaporimeter inlet side is flowed out.

The air-supply airduct of the present invention is for middle for rectangle,Two ends are semicircular oblate pipe,Oblate pipe is arranged around evaporimeter heat pipe,Generally evaporimeter heat pipe is one group of " C " type arranged in parallel,Oblate pipe is also configured as one group of " C " type arranged in parallel,The fin arrangement being close on evaporimeter heat pipe,Flat horizontal surface in the middle of oblate pipe is parallel with the air-flow direction into evaporimeter,Oblate pipe is arranged with heat pipe in evaporimeter in same horizontal line,Rectangular minor face in the middle of oblate pipe is grown up to identical with evaporimeter heat pipe diameter,Oblate pipe arranges the half that quantity is heat pipe number on evaporimeter,One one, interval ground surrounds evaporimeter heat pipe,The air-supply airduct for so arranging would not increase evaporimeter air intake windage,Oblate pipe one is connected with wind-collecting cover insertion,Close other end,On the flat horizontal surface of oblate pipe it is uniform on open up one group or array heats air-supply airduct air outlet,The quantity in every group of air port is not limited,It is proposed that air port is circle,A diameter of 3mm,An air port is opened up per 20mm,The setting of such oblate pipe,Wind-collecting cover will be introduced through the mixing air for coming equably to shunt on the outer surface of whole evaporimeter section of jurisdiction inlet side by the air port on oblate pipe,Guarantee that each position of evaporimeter can all obtain substantially uniform mixing air air intake.Air-supply airduct is alternatively elliptical tube and pipe, and other settings are similar with above-mentioned oblate pipe, plays function substantially the same with oblate pipe air-supply airduct.

One refrigeration exhaust air flue dividing plate is set between compressor and outdoor set cabinet side plate,Dividing plate is closed up and down with casing top cover and chassis,Dividing plate with outdoor set cabinet while be connected,Width extended frequency conversion electrical control box,Air outlet is opened up in outdoor set cabinet between refrigeration exhaust air flue dividing plate and outdoor set cabinet side plate,So,Exhaust air flue of freezing is formed between refrigeration exhaust air flue dividing plate and outdoor set cabinet side plate,Refrigeration exhaust air flue dividing plate play guiding air fully with compressor,Frequency conversion electrical control box carries out entering wind-collecting cover or the effect into refrigeration exhaust air flue after heat exchange,When heating,The air collected into compressor and electronic control module space is changed flow direction and leads into wind-collecting cover by refrigeration exhaust air flue dividing plate,During refrigeration,After refrigeration exhaust air flue dividing plate flows to the air change collected into compressor and electronic control module space Jing compressor to frequency conversion electrical control box,Turn round to turn back and discharge off-premises station into refrigeration exhaust air flue.

Wind-collecting cover is arranged on the rear backplate for being relatively distant from the outdoor set cabinet in air inducing air channel, wind-collecting cover collection air port is designed to a little bigger as far as possible, be easy to flow through the air for coming and collect without resistance and enter wind-collecting cover, wind-collecting cover and air-supply airduct can, corrosion resistant aluminum alloy material fast using light weight, heat transfer make.Arrange in refrigeration exhaust air flue and wind-collecting cover can open and close air door and electrothermal tube start and stop be controlled to known technology in Air-conditioner design field, the present invention do not repeat.

As a result of above-mentioned technical proposal, the invention has the advantages that and good effect:

1, during air-conditioning heating when environment temperature is low, and the temperature that solidifying frost freezes can be produced to evaporimeter, the present invention can at low ambient temperatures cause that A/C evaporator is frostless to form for frostless air-conditioning;The rate reduction for causing the solidifying frost of A/C evaporator to freeze in the case where environment temperature is lower, reduces the open frequency and defrosting time of subsidiary defrosting device, improves the efficiency of air-conditioning heating, power and energy saving.

2, no matter air-conditioning is heated under which type of environment temperature, and the temperature of the mixing air that the present invention flows through evaporimeter is always above the temperature of surrounding air so that the evaporation efficiency of off-premises station is improved, and improves air-conditioning heating efficiency, increased heating capacity.

3, during operation of air conditioner, no matter heat or freeze, the present invention can improve the performance and used life of compressor and frequency conversion electrical control components and parts in the case where energy consumption is not increased to frequency conversion electrical control components and parts radiating and cooling in compressor and electric-controlled box.

4, the present invention is applied in combustible refrigerant system air conditioner, eliminates air-conditioner outdoor unit and the hidden danger that leakage may set off an explosion occurs, it is ensured that the safe handling of combustible refrigerant system air conditioner.

5, the present invention causes at low ambient temperatures that A/C evaporator is frostless forms for frostless air-conditioning above-mentioned, to compressor and frequency conversion electrical control box radiating and cooling and eliminate combustible refrigerant system air conditioner off-premises station occur leakage may set off an explosion hidden danger goal of the invention be all on the basis of existing air-conditioning without the need for increasing power consumption in the case of realize, with the advantage that zero cost achieves the goal.

Description of the drawings

Accompanying drawing 1 is outdoor unit structure schematic diagram of the present invention.

Accompanying drawing 2 is wind-collecting cover of the present invention and air-supply airduct schematic diagram.

Specific embodiment

With reference to the accompanying drawings and examples the invention will be further described:

Accompanying drawing 1, to heat air-supply airduct, 2 is electrothermal tube to 1 in accompanying drawing 2,3 is wind-collecting cover, and 4 is outdoor set cabinet, and 5 is frequency conversion electrical control box, 6 is compressor, 7 are refrigeration exhaust air flue, and 8 are refrigeration exhaust air flue dividing plate, and 9 is off-premises station median septum, 10 is air inducing air channel, 11 is blower fan, 12 evaporimeters, and 13 to heat air-supply airduct air outlet.

During air-conditioning heating,Air-conditioner is powered and starts,The air door of refrigeration exhaust air flue 7 is closed,The door opening of wind-collecting cover 3,Compressor 6 starts,Heat the evaporimeter 12 that the cold-producing medium in loop is entered in off-premises station 4,In the presence of blower fan 11,Suction air,The air of suction is when evaporimeter 12,By absorption heat,Cools air,The air for turning cold is discharged outside off-premises station by blower fan 11,The cold air that becomes for discharging blower fan 11 has stronger blast,The air inlet being arranged on the air inducing air channel 10 of the air outlet of blower fan 11,The air that part turns cold can be incorporated into compressor 6 and the space of frequency conversion electrical control module 5,Flow through compressor 6 and frequency conversion electrical control box 5,There is heat exchange with compressor 6 and frequency conversion electrical control box 5,Absorb the heat of accumulation on compressor 6 and frequency conversion electrical control box 5 and become the hot-air of heating,Jing heats air-supply airduct 1 and flows out to airduct air outlet 13 of blowing is heated after the hot-air of heating is collected by wind-collecting cover 3,The arrow heated on air-supply airduct air outlet 13 represents air port air-out and air-out direction,Heating after the air being inhaled into outside the hot-air and off-premises station of the outflow of air-supply airduct air outlet 13 converges becomes mixing air,The temperature of mixing air will be above the temperature of the air being inhaled into outside off-premises station,It is higher than off-premises station environment temperature,Mixing air is in the presence of blower fan 11,Through evaporimeter 12,By absorption heat,Mixing air turns cold,The mixing air for turning cold is discharged outside off-premises station by blower fan 11,So circulation,Air-conditioning is realized heating.Start electrothermal tube 2 when being not enough to suppress the section of jurisdiction on evaporimeter solidifying white when the temperature of mixing air is low, raising flows through the air themperature of wind-collecting cover, so as to the temperature for improving mixing air is come for the defrosting of evaporimeter section of jurisdiction surface.

During refrigeration,Air-conditioner is powered and starts,Refrigeration exhaust air flue door opening,Wind-collecting cover air door is closed,Compressor 6 starts,Evaporimeter 12 becomes condenser,The condenser 12 that cold-producing medium in refrigerating circuit is entered in off-premises station 4,Air is sucked in the presence of blower fan 11,The air of suction is when condenser 12,By absorption cold,Air heating becomes hot-air,Air is although temperature improves into hot-air,But the temperature of hot-air is still below the temperature on compressor case and frequency conversion electrical control box surface,Hot-air is discharged outside off-premises station by blower fan 11,The air inlet being arranged on the air inducing air channel 10 of the air outlet of blower fan 11,Part hot-air is incorporated into into compressor 6 and the space of frequency conversion electrical control module 5,When flowing through compressor 6 and frequency conversion electrical control box 5,There is heat exchange with compressor 6 and frequency conversion electrical control box 5,Absorb the heat accumulated on compressor 6 and frequency conversion electrical control box 5,Jing refrigeration exhaust air flues 7 discharge outdoor,So circulation,Reach the purpose of compressor 6 and the radiating and cooling of frequency conversion electrical control box 5.

Arrow in accompanying drawing represents air intake air-out and air inlet/outlet direction at this, and hot-air flows out the flow circuits of refrigeration exhaust air flue when dotted arrow is refrigeration, and the frequency conversion electrical control module in embodiment explanation is frequency conversion electrical control box.

Claims (8)

1. a kind of frostless air-conditioner outdoor unit of refrigerating heat pump type, including outdoor set cabinet, evaporimeter, blower fan, median septum, compressor and frequency conversion electrical control module volume, frequency conversion electrical control box, compressor is characterized in that:In fan outlet, air inducing air inlet of air duct is set, the plane formed with fan outlet is as perspective plane, projection of the plane that the plane that air inducing air inlet of air duct is formed is formed with fan outlet on the perspective plane forms faying surface, air inducing air channel communicates through median septum with compressor and frequency conversion electrical control module volume, wind-collecting cover is set in the outdoor set cabinet of compressor and frequency conversion electrical control module volume, wind-collecting cover connection heats air-supply airduct, blower fan air-out enters compressor and frequency conversion electrical control module volume by air inducing air channel, flow through compressor, after frequency conversion electrical control box, the outflow of evaporimeter inlet side is transported to into wind-collecting cover by air-supply airduct is heated.
2. a kind of frostless air-conditioner outdoor unit of refrigerating heat pump type, including outdoor set cabinet, condenser, blower fan, median septum, compressor and frequency conversion electrical control module volume, frequency conversion electrical control box, compressor is characterized in that:In fan outlet, air inducing air inlet of air duct is set, the plane formed with fan outlet is as perspective plane, projection of the plane that the plane that air inducing air inlet of air duct is formed is formed with fan outlet on the perspective plane forms faying surface, air inducing air channel communicates through median septum with compressor and frequency conversion electrical control module volume, refrigeration exhaust air flue is set between compressor and outdoor set cabinet side plate, refrigeration exhaust air flue air outlet is communicated through outdoor set cabinet with off-premises station space outerpace, blower fan air-out enters compressor and frequency conversion electrical control module volume by air inducing air channel, flow through compressor, after frequency conversion electrical control box, off-premises station is discharged into refrigeration exhaust air flue.
3., according to claim 1 or the frostless air-conditioner outdoor unit of refrigerating heat pump type according to claim 2, it is characterized in that:The plane formed with fan outlet is as perspective plane, projection of the plane that plane that air inducing air inlet of air duct is formed is formed with fan outlet on the perspective plane forms faying surface, and the 20% of projected area of the plane that faying surface area is formed more than fan outlet on the perspective plane.
4. the frostless air-conditioner outdoor unit of refrigerating heat pump type according to claim 1, is characterized in that:Wind-collecting cover is made up with air-supply airduct is heated of aluminium alloy.
5. the frostless air-conditioner outdoor unit of refrigerating heat pump type according to claim 1, is characterized in that:Electrothermal tube is provided with wind-collecting cover.
6. the frostless air-conditioner outdoor unit of refrigerating heat pump type according to claim 1, is characterized in that:Wind-collecting cover air port be provided with can open and close air door.
7., according to claim 1 or the frostless air-conditioner outdoor unit of refrigerating heat pump type according to claim 2, it is characterized in that:Refrigeration exhaust air flue dividing plate is provided between compressor and outdoor set cabinet side plate.
8. the frostless air-conditioner outdoor unit of refrigerating heat pump type according to claim 2, is characterized in that:Refrigeration exhaust air flue on be provided with can open and close air door.
CN201510660156.7A 2015-10-14 2015-10-14 Frost-free outdoor unit of refrigerating heat pump type air conditioner CN106594902A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018076189A1 (en) * 2016-10-25 2018-05-03 孙海潮 Outdoor unit for frost-free air conditioner
WO2018076310A1 (en) * 2016-10-29 2018-05-03 孙海潮 Frost-free air conditioner
WO2018076311A1 (en) * 2016-10-29 2018-05-03 孙海潮 Frost-free air conditioner
WO2018076312A1 (en) * 2016-10-29 2018-05-03 孙海潮 Frost-free air conditioner
WO2018076252A1 (en) * 2016-10-27 2018-05-03 孙海潮 Refrigerating heat pump type frost-free air conditioner
WO2018076251A1 (en) * 2016-10-27 2018-05-03 孙海潮 Refrigerating heat pump type frost-free air conditioner
WO2018076185A1 (en) * 2016-10-25 2018-05-03 孙海潮 Outdoor unit for refrigerating heat pump type frost-free air conditioner
WO2018076188A1 (en) * 2016-10-25 2018-05-03 孙海潮 Outdoor unit for frost-free air conditioner

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018076189A1 (en) * 2016-10-25 2018-05-03 孙海潮 Outdoor unit for frost-free air conditioner
WO2018076188A1 (en) * 2016-10-25 2018-05-03 孙海潮 Outdoor unit for frost-free air conditioner
WO2018076185A1 (en) * 2016-10-25 2018-05-03 孙海潮 Outdoor unit for refrigerating heat pump type frost-free air conditioner
WO2018076252A1 (en) * 2016-10-27 2018-05-03 孙海潮 Refrigerating heat pump type frost-free air conditioner
WO2018076251A1 (en) * 2016-10-27 2018-05-03 孙海潮 Refrigerating heat pump type frost-free air conditioner
WO2018076311A1 (en) * 2016-10-29 2018-05-03 孙海潮 Frost-free air conditioner
WO2018076312A1 (en) * 2016-10-29 2018-05-03 孙海潮 Frost-free air conditioner
WO2018076310A1 (en) * 2016-10-29 2018-05-03 孙海潮 Frost-free air conditioner

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Application publication date: 20170426