CN102159901B - Air conditioning device - Google Patents
Air conditioning device Download PDFInfo
- Publication number
- CN102159901B CN102159901B CN2009801363989A CN200980136398A CN102159901B CN 102159901 B CN102159901 B CN 102159901B CN 2009801363989 A CN2009801363989 A CN 2009801363989A CN 200980136398 A CN200980136398 A CN 200980136398A CN 102159901 B CN102159901 B CN 102159901B
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- Prior art keywords
- outdoor
- heat converter
- running
- heat
- aircondition
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/12—Removing frost by hot-fluid circulating system separate from the refrigerant system
- F25D21/125—Removing frost by hot-fluid circulating system separate from the refrigerant system the hot fluid being ambient air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/029—Control issues
- F25B2313/0294—Control issues related to the outdoor fan, e.g. controlling speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0315—Temperature sensors near the outdoor heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0251—Compressor control by controlling speed with on-off operation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
Abstract
An air conditioning device includes: a heat pump freezing cycle formed by connecting a compressor (1), a four-way valve (2), an indoor heat exchanger (3), a pressure reducer (4), and an outdoor heat exchanger (5) by a coolant circuit; an indoor fan (7) which performs heat exchange between the indoor heat exchanger (3) and the indoor air; an outdoor fan (8) which performs heat exchange between the outdoor heat exchanger (5) and the outdoor air; and an outdoor temperature detection means (6) which detects the outdoor temperature. Moreover, when defrosting the outdoor heat exchanger (5), the compressor (1) is stopped and the outdoor fan (8) is rotated if the outdoor temperature detected by the outdoor temperature detection means (6) exceeds a predetermined value.
Description
Technical field
The present invention relates to aircondition, the aircondition that particularly relates to heat-pump-type and can defrost to frost attached to outdoor heat converter.
Background technology
The Defrost mode of the aircondition of existing heat-pump-type generally is that cross valve is switched, and makes the mobile Defrost mode of the contrary direction of cold-producing medium of freeze cycle.Figure 10 is that expression is switched the cross valve of existing aircondition and the time chart of the control when defrosting.
In warming operation, if accept the defrosting commencing signal, then reduce compressor frequency at time t1, make the aperture of the aperture of expansion valve for regulation, cross valve is switched to refrigerating circuit from the heating loop.At this moment, outdoor fan and indoor fan shut down.That is, the flow direction of the cold-producing medium in the defrosting running is identical during with refrigeration, and the cold-producing medium of mobile HTHP melts the frost attached to outdoor heat converter in outdoor heat converter.
In this Defrost mode, owing to utilize the input of compressor, so, in the defrosting running, consume the input about about 1000W～6000W for the aircondition of the heating type of 12 general tatamis attached to the heat of fusion of the frost of outdoor heat converter.In addition, when defrosting,,, become uncomfortable running so indoor temperature reduces and feels to have the cold wind sense because indoor heat converter is an evaporimeter.In addition, when the heating of low temperature, approximately added once defrosting running in one hour, so also have basic problem aspect energy saving, the comfortableness.
As the countermeasure of this basic assignment, propose to have the aircondition (for example, with reference to patent documentation 1) that obtains comfortableness and running efficiency raising.
Figure 11 is the refrigeration cycle diagram of the existing aircondition of record in the patent documentation 1.Existing aircondition shown in Figure 11 connects compressor 101, cross valve 102, indoor heat converter 103, expansion valve (or capillary) 104 and outdoor heat converter 105 successively by refrigerant loop and constitutes the heat-pump-type freeze cycle.In addition, be provided with indoor fan 106 at indoor heat converter 103, the pipe arrangement temperature sensor 108 that is provided with outdoor fan 107 and the temperature of outdoor heat converter 105 is detected at outdoor heat converter 105, control module 109 is controlled the defrosting action based on pipe arrangement temperature sensor 108 detected temperature.
Promptly, control module 109 was met the detection of pipe arrangement temperature sensor 108 in each specified period and was monitored, when detect its detected temperatures in the situation below the set point of temperature continuously when stipulated number is above, remove defrosting running attached to the frost of outdoor heat converter 105.
Like this, in the heat pump running, state attached to the frost of outdoor heat converter 105 is held, carry out the defrosting running of outdoor heat converter 105, can reduce the defrosting number of times as much as possible thus, when not carrying out unwanted defrosting running and can carrying out efficiently warming operation, can the reduction of the ambient temperature that be caused by the defrosting running be suppressed, improve comfortableness.
Technical literature formerly
Patent documentation
Patent documentation 1: Japanese kokai publication sho 60-133249 communique
Brief summary of the invention
The problem that invention will solve
Yet, in patent documentation 1, in the defrosting control method of the existing aircondition of record, have following problem.
Because this defrosting running is by cross valve 102 being switched the Defrost mode of the running of the compressor 101 that becomes the refrigerating circuit state, even the number of times that therefore cold cold-producing medium flows in indoor heat converter 103 reduces, because in fact cold-producing medium flows through indoor heat converter 103, so, can not eliminate this unplessantness displeasure because sensation of skin cold that heating stops to cause and room temperature decline are bigger.In addition, owing to do not have the unwanted defrosting running of outdoor heat converter 105, so though can turn round efficiently, the input of the Btu utilization compressor 1 in the defrosting running, the efficient of defrosting running is lower.
The present invention finishes in view of this problem that prior art has, its purpose is the aircondition that provides following: constitute complicated freeze cycle, the parts that utilize common freeze cycle and carry at common aircondition can constitute, in the defrosting running, frost is melted with low-down input by utilizing atmospheric heat, cold cold-producing medium is passed through in indoor heat converter, room temperature in the defrosting running descends also less, owing to do not make cold-producing medium circulation in the defrosting running, can there be the defrosting running of cold-producing medium sound.
Be used to solve the method for problem
In order to reach above-mentioned purpose, aircondition of the present invention comprises: the heat-pump-type freeze cycle that connects compressor, cross valve, indoor heat converter, pressure reducer, outdoor heat converter formation by refrigerant loop successively; Carry out the indoor fan of the heat exchange of indoor heat converter and room air; Carry out the outdoor fan of the heat exchange of outdoor heat converter and outdoor air; With the outdoor temperature sensor that outdoor temperature is detected.When outdoor heat converter is defrosted, passing through the detected outdoor temperature of outdoor temperature sensor under the situation more than the setting, stop compressor, make the outdoor fan rotation, defrost.
In addition, preferably in the defrosting of outdoor heat converter running, the heat-pump-type freeze cycle keeps the state that heats.
Also preferred: high revolution or the maximum revolution when being set at of the revolution of the described outdoor fan in when running of will defrosting than warming operation.
In addition, preferred pressure reducer uses expansion valve, before the running that is about to defrost or after the running that just defrosted, expansion valve is adjusted to closes or near closing.
In addition, also can be: before the running that defrosts, reduce the operating frequency of described compressor, thereafter expansion valve is adjusted to and closes or, follow, the compressor operation official hour is stopped afterwards, and then described outdoor fan is rotated near closing.
In addition, also can be before the running that defrosts, described expansion valve is adjusted to closes or near closing, in the stipulated time thereafter, described expansion valve is opened in control, and then make the outdoor fan rotation.
In addition, also can be: before the running that defrosts, outdoor fan is stopped, making expansion valve be in standard-sized sheet or, after the running stipulated time, stop compressor thereafter, make the outdoor fan rotation near the state of standard-sized sheet.
In addition, other the aircondition of mode of the present invention comprises: connect the heat-pump-type freeze cycle that compressor, cross valve, indoor heat converter, pressure reducer, outdoor heat converter constitute successively by refrigerant loop; Carry out the indoor fan of the heat exchange of indoor heat converter and room air; Carry out the outdoor fan of the heat exchange of outdoor heat converter and outdoor air; With the outdoor temperature sensor that outdoor temperature is detected.When outdoor heat converter is defrosted, in that detected outdoor temperature is lower than under the situation of setting by outdoor temperature sensor, cross valve is switched, making the heat-pump-type freeze cycle is refrigerating circuit, stop the running of compressor then, and close or, make the outdoor fan rotation in that expansion valve is adjusted to, defrost near when closing.
Under this situation, can be that the time set of refrigerating circuit is in the stipulated time with cross valve being switched and making the heat-pump-type freeze cycle.
In addition, also can be provided with the outdoor piping temperature sensor that the outdoor piping temperature is detected, only when being lower than set point of temperature by the detected outdoor piping temperature of this outdoor piping temperature sensor, cross valve is switched, making the heat-pump-type freeze cycle is refrigerating circuit.
In addition, preferably when by the detected outdoor temperature of this outdoor temperature sensor being setting when above, lacked the duration of runs that is set at duration of runs of outdoor fan the outdoor fan when being lower than described setting than described outdoor temperature.
The invention effect
According to the present invention, when outdoor heat converter is defrosted, be under the situation more than the setting by the detected outdoor piping temperature of this outdoor piping temperature sensor, stopping compressor and utilize the atmospheric heat running that defrosts, so energy saving, comfortableness are good.
In addition because and defrosting of switching with cross valve and the defrosting that utilizes atmospheric heat, so the defrosting running of switching based on cross valve, can make attached to the part of the frost of outdoor heat exchanger front and melt, then, by utilizing the defrosting of atmospheric heat, can improve energy saving, comfortableness.
Description of drawings
Fig. 1 is the refrigeration cycle diagram of the aircondition that the present invention relates to.
Fig. 2 is the control block diagram of the aircondition that the present invention relates to.
Fig. 3 is the flow chart of control of defrosting running of the aircondition of presentation graphs 1.
Fig. 4 is the timetable of the control action of the expression aircondition that the present invention relates to that carries out atmospheric heat when running defrosting.
Fig. 5 is other the timetable of control action of the expression aircondition that the present invention relates to that carries out atmospheric heat when running defrosting.
Fig. 6 is the timetable of another control action of the expression aircondition that the present invention relates to that carries out atmospheric heat when running defrosting.
Fig. 7 is the timetable of the another control action of the expression aircondition that the present invention relates to that carries out atmospheric heat when running defrosting.
Fig. 8 is the timetable of a control action again that the aircondition that the present invention relates in atmospheric heat when running defrosting is carried out in expression.
Fig. 9 is that the timetable that cross valve switches the control action of the aircondition that the present invention relates to when defrosting running is carried out in expression.
Figure 10 is that the cross valve of existing aircondition switches the timetable when defrosting.
Figure 11 is existing other the refrigeration cycle diagram of aircondition.
The specific embodiment
Below, with reference to accompanying drawing, describe at embodiments of the present invention.In addition, the present invention is not limited to this embodiment.
(basic structure of aircondition)
Fig. 1 is the refrigeration cycle diagram of the aircondition that the present invention relates to, and Fig. 2 is the control block diagram of identical aircondition.
As shown in Figure 1, the aircondition that the present invention relates to comprises by refrigerant loop indoor set 10 connected to one another and off-premises station 11.The outdoor temperature sensor 6 that dispose compressor 1, cross valve 2, pressure reducer 4, outdoor heat converter 5 at off-premises station 11, outdoor temperature is detected, outdoor fan 8 and to the outdoor piping temperature sensor 9 that the pipe arrangement temperature of outdoor heat converter 5 detects dispose indoor heat converter 3 and indoor fan 7 at indoor set 10.
In addition, connect compressor 1, cross valve 2, indoor heat converter 3, pressure reducer 4, outdoor heat converter 5 formation heat-pump-type freeze cycle successively by refrigerant loop.In addition, pressure reducer 4 uses electromagnetic type expansion valve or capillaries, under the situation of using the electromagnetic type expansion valve, below sometimes pressure reducer 4 is called " expansion valve 4 ".
Fig. 2 represents the controller 12 of indoor set 10 and the controller 13 of off-premises station 11, in the indoor fan running portion 61 that indoor controller 12 is provided with defrosting commencing signal receiving portion 60 and based on the output from defrosting commencing signal receiving portion 60 indoor fan is turned round.On the other hand, be provided with at outdoor controller 13: defrosting beginning judging part 50; Compressor operation portion 51 according to the running of the detection signal control compressor 1 of the detected temperatures of the outdoor temperature sensor 6 of input defrosting beginning judging part 50 and outdoor piping temperature sensor 9; Variable 52 of the expansion valve opening that the aperture of expansion valve 4 is controlled; Outdoor fan running portion 53 that the running of outdoor fan 8 is controlled and the cross valve switching part 54 that the switching of cross valve 2 is controlled.
Fig. 3 is the flow chart of control of the defrosting running of the aircondition that the present invention relates to of expression.As shown in Figure 3, based on whether need the to defrost judgement of running of the testing result of outdoor piping temperature sensor 9, in step S1, temperature that outdoor piping temperature sensor 9 is detected and first set point of temperature under the freezing point (for example-7 ℃) compare.When detected temperatures was lower than first set point of temperature, the running that defrosts in step S2 on the other hand, when detected temperatures is higher than first set point of temperature, was returned step S1.Wherein, first set point of temperature is that being judged as in outdoor heat converter 5 frostings is more than the ormal weight and the temperature that can not absorb heat.
In step S3, outdoor temperature sensor 6 temperature that detects and second set point of temperature (for example 1 ℃) that is higher than described first set point of temperature are compared, if detected temperatures is higher than second set point of temperature, then in step S4, carry out atmospheric heat defrosting running, if detected temperatures less than second set point of temperature is then carried out cross valve and is switched the defrosting running in step S5.
At this, " atmospheric heat defrosting running " is meant: cross valve 2 is not being switched and keeping under the state of heating state, utilize the running that defrosts of the heat (heat of atmosphere) of outdoor air, " switching the four-way valve defrosting running " is meant: switch to refrigerating circuit by cross valve 2 from the heating loop, the cold-producing medium of freeze cycle is flowed in contrary direction, and running defrosts.
In addition, if only the testing result based on outdoor piping temperature sensor 9 need to judge whether the defrosting running, then because the running that under the lower situation of the big temperature degree in the external world, may defrost continually, so on the testing result of outdoor piping temperature sensor 9, also, can reduce unnecessary defrosting running as much as possible based on judging accumulation duration of runs of the testing result of outdoor temperature sensor 6, aircondition etc.
(embodiment one)
Fig. 4 is the timetable of the control action of the expression aircondition that the present invention relates to that carries out atmospheric heat when running defrosting.
In outdoor controller 13, detected temperatures based on outdoor piping temperature sensor 9, defrost at defrosting beginning judging part 50 and to begin to judge, when being judged as the defrosting beginning, the control that compressor operating portion 51, variable 52 of expansion valve opening, outdoor fan running portion 53, cross valve switching part 54 carry out as shown in Figure 4, running thus defrosts.
At this moment, at the defrosting commencing signal that the defrosting commencing signal receiving portion 60 of indoor controller 12 is accepted from outdoor control part 13, indoor fan running portion 61 accepts the output from defrosting commencing signal portion 60, also carries out control shown in Figure 4.
In warming operation, begin to judge if become defrosting at time t1, compressor 1 is stopped, keep the rotation of outdoor fan 8, be defrosting running in time t2 transition, carry out heat exchange between outdoor air and outdoor heat converter 5, the heat (heat of atmosphere) by outdoor air defrosts.
In addition, at time t1, stop relatively with compressor 1, outdoor fan 8 remains in operation since in off-premises station 11 flow system cryogen not, so even cross valve 2 does not switch in defrosting in the state in heating loop yet.In addition, indoor fan 7 is not because heat, so shut down.
In addition, preferably at time t2, the revolution of outdoor fan 8 is increased to revolution or the maximum revolution higher than the revolution in the warming operation by outdoor fan running portion 53.These are that frost can evaporate more as early as possible, can shorten defrosting time because the revolution of outdoor fan 8 is high more.But the speed of outdoor fan 8 does not have necessary necessity that increases.
Secondly, finish the defrosting running, be back to the action before defrosting, revert to common heat pump heating running at time t4 at time t3.In addition, defrosting (time t2～time t3) between on-stream period though be set with the stipulated time (for example 12 minutes) of judging that frost melts, but if the outdoor piping temperature is removed sensor 9 detected temperature when set point of temperature (for example, 6 ℃) is above, also can be judged as frost melts, so can substitute the described stipulated time, the detected temperatures of removing sensor 9 based on the outdoor piping temperature finishes the defrosting running.
In addition, in the present embodiment, though the operating frequency of compressor 1 is changed, even in the running that can defrost too of the compressor of fixed rotating speed, so the revolution of the revolution of indoor fan 7 and outdoor fan 8 is fixing or changes that all it doesn't matter.
In addition, fixing because the aperture of pressure reducer (expansion valve) 4 is maintained as shown in Figure 4, so pressure reducer 4 not only can use the electromagnetic type expansion valve, also can use capillary.
In addition, first and second set points of temperature, after warming operation begins, higher in the time of can being set at lower when beginning to defrost, defrosting thereafter, lower during the warming operation that perhaps also can be set at daytime, higher during warming operation between liquid, can according to around many conditions change.
By above-mentioned structure, can utilize atmospheric heat that the frost attached to outdoor heat converter 5 is melted, and the input of outdoor fan 8 can be with the running that defrosts about about 100W, so defrosting efficiency improve.In addition, when cross valve switches the defrosting running, if frost melts, below then melting of frost and the water that produces are expelled to from off-premises station 11, if the water of being discharged is because the lower temperature in outside is frozen the problem that then exists the people to walk in the above and fall or stop up the gutter.Yet, in the present embodiment, because adopt atmospheric heat defrosting running, so attached to the frost that has melted after the outdoor heat converter 5, because diffusion is evaporated in the blowing of outdoor fan 8 aloft, so do not produce such problem.
In addition, in the defrosting running of outdoor heat converter 5, though stop warming operation, because the heat-pump-type freeze cycle remains the heating state, so cold cold-producing medium does not flow the waste heat in the time of can keeping heating to former state in indoor set 10.Therefore,,, therefore there is not offending cold-producing medium sound because cold-producing medium does not flow at indoor set 10 in the defrosting running from the cold wind sense of indoor set 10 yet.
Further, if the revolution of outdoor fan 8 in the running that will defrost is set at the revolution when being higher than warming operation, then because outdoor a large amount of atmospheric heat is passed through outdoor heat converter 5, thus attached to the frost of outdoor heat converter 5 melt faster.In addition, because the revolution of outdoor fan 8 is increased, wind speed improves, and frost melts the water that forms not attached to the portion that blows out of off-premises station 11, is flown to outside the off-premises station 11 and blow, and therefore the portion of blowing out does not freeze yet.
(embodiment two)
Fig. 5 is other the timetable of control action of the expression aircondition that the present invention relates to that carries out atmospheric heat when running defrosting.
The difference of the aircondition that aircondition that present embodiment relates to and above-mentioned first embodiment relate to is as follows: in the first embodiment, pressure reducer 4 can use electromagnetic type expansion valve or capillary, with respect to this, in the present embodiment, because need control to the aperture of pressure reducer 4, so pressure reducer 4 uses the electromagnetic type expansion valve, making expansion valve 4 in the defrosting running is to close or approaching aperture of closing (5% when for example, being adjusted to standard-sized sheet is following).
In the present embodiment, at time t1, when compressor 1, indoor fan 7, outdoor fan 8 are stopped, make expansion valve 4 close or roughly close, make expansion valve 4 drive valve at time t3, but identical in the action of the later compressor 1 of time t2, indoor fan 7, outdoor fan 8 with the action of first embodiment.
In addition, though make expansion valve 4 close or roughly close at time t1, make outdoor fan 8 running defrost running the moment time t2 near, can control expansion valve 4 cuts out.
Promptly, when the running by outdoor fan 8 defrosts, before the running that is about to defrost or after the running that just defrosted, close or, can stop cold-producing medium to move to outdoor heat converter 5 from indoor set 10 near the position of closing by expansion valve 4 being set in be adjusted to.Its result can be suppressed at Min. with the heat that the cold-producing medium in the outdoor heat converter 5 absorbs, and atmospheric heat can be effectively utilized in melting frost.
(embodiment three)
Fig. 6 is the timetable of control action of other other of the expression aircondition that the present invention relates to that carries out atmospheric heat when running defrosting.
The difference of the aircondition that aircondition that present embodiment relates to and above-mentioned first embodiment relate to is as follows: as shown in Figure 6, use the electromagnetic type expansion valve as pressure reducer 4, and reduce the state that turns round by the frequency that makes compressor 1, make the valve state of opening of expansion valve 4 continue certain hour, running defrosts.
Further specifically, in time t1, stop the running of indoor fan 7 and outdoor fan 8, under the state that the frequency that reduces compressor 1 turns round, expansion valve 4 is set at closes or,, stop compressor 1 at time t2 making compressor operation after the stipulated time near the degree of closing, make outdoor fan 8 runnings with the high revolution of revolution than when heating, running defrosts.
In addition, the action of the later compressor 1 of time t2, indoor fan 7, outdoor fan 8 is identical with the action of second embodiment.
By such setting, to accumulate in the refrigerant-recovery of outdoor heat converter 5 to indoor set 10, deposit indoor heat converter 3 in, atmospheric heat does not have cooled dose of absorption when turning round by the defrosting that operates at outdoor heat converter 5 of outdoor fan 8, can effectively atmospheric heat be used in and melt frost.
(embodiment four)
Fig. 7 is the timetable of control action of other other of the expression aircondition that the present invention relates to that carries out atmospheric heat when running defrosting.
The difference of the aircondition that aircondition that present embodiment relates to and above-mentioned first embodiment relate to is as follows: as shown in Figure 7, use the electromagnetic type expansion valve as pressure reducer 4, and at the time t1 that defrosts and begin to judge, setting is adjusted to expansion valve 4 and closes or approaching degree of closing before the running that defrosts, after stopping outdoor fan 8, at time t2 expansion valve 4 is opened and to be controlled to be for example full-gear, the heating residual heat stream that makes indoor set 10 is to outdoor heat converter 5, makes attached to the part of the frost of outdoor heat converter 5 to melt.Then, at time t3, once more expansion valve 4 cuts out, and make outdoor fan running 8, running defrosts.
In addition, the action of the later compressor 1 of time t3, expansion valve 4, indoor fan 7, outdoor fan 8 is identical with the action of second embodiment.
The initial frost of defrosting running is because usually seamlessly attached to the surface of outdoor heat converter 5, so even if make outdoor air at outdoor heat converter 5 heat exchange take place, make the frost dissolving, its efficient is not high yet.Even carry out the control of Fig. 7 in this state, heat after utilization heats, make attached to the part of the frost of outdoor heat converter 5 and melt, when making outdoor fan 8 runnings, can form the vent passages that outside atmosphere is passed through, can defrost effectively by atmospheric heat.In addition, because the heat by flowing after heating at outdoor heat converter 5 can more easily make frost peel off from the fin of outdoor heat converter 5, so also can shorten defrosting time by the running of outdoor fan 8.
(embodiment five)
Fig. 8 is the timetable of control action of other other of the expression aircondition that the present invention relates to that carries out atmospheric heat when running defrosting.
The difference of the aircondition that aircondition that present embodiment relates to and above-mentioned first embodiment relate to is as follows: as shown in Figure 8, use the electromagnetic type expansion valve as pressure reducer 4, and in continuing warming operation, compressor 1 is stopped with after expansion valve 4 standard-sized sheets, make outdoor fan 8 runnings, running defrosts.
More specifically, in warming operation, defrosting at time t1 begins to judge, under the state that continues compressor 1 and indoor fan 7 runnings, expansion valve 4 is set at standard-sized sheet for example or near the aperture of standard-sized sheet, and stops the running of outdoor fan 8.By such setting, the cold-producing medium of the heating in the warming operation is flowed in outdoor heat converter 5, can melt the part of frost.Then, at time t2, compressor 1 is stopped, and expansion valve 4 is opened.In addition, revolution and the running of the revolution that makes outdoor fan 8 during greater than heating stops the running of indoor fan 7.
In addition, the action of the later compressor 1 of time t2, expansion valve 4, indoor fan 7, outdoor fan 8 is identical with the action of second embodiment.
According to present embodiment,, the frost of the part of outdoor heat converter 5 is melted even frost also can utilize the heat after heating seamlessly attached to the state of the front surface of outdoor heat converter 5.Therefore, when outdoor fan 8 runnings, form vent passages, can defrost effectively by atmospheric heat by outside atmosphere.In addition, directly flow to outdoor heat converter 5 by making the heat after heating, and the frost that adheres to is peeled off from the fin of outdoor heat converter 5, shorten defrosting time by the running of outdoor fan 8.
(embodiment six)
Fig. 9 is that the timetable that cross valve switches the control action of the aircondition that the present invention relates to when defrosting running is carried out in expression.In the present embodiment, use the electromagnetic type expansion valves, and as described later, and switch the defrosting running and the atmospheric heat defrosting is turned round with cross valve as pressure reducer 4.
As shown in Figure 9, in warming operation, at time t1, beginning judging part 50 in the defrosting of outdoor controller 13 defrosts and begins to judge, be lower than under the situation of second set point of temperature in outdoor temperature sensor 6 detected temperature, carry out cross valve and switch the defrosting running, the operating frequency of compressor 1 is reduced, cross valve 2 is switched to refrigerating circuit, and stop the running of outdoor fan 8 and indoor fan 7.Aperture when at this moment, controlling aperture with expansion valve 4 and be closed to heating only about half of.
Then,, increase the frequency of compressor 1 at time t2, and the aperture of the centre of the aperture when controlling aperture when expansion valve 4 opened to warming operation and cross valve and switching the defrosting running.At time t3, stop compressor 1, finish cross valve and switch the defrosting running, transit to the atmospheric heat defrosting running of being undertaken by the running of outdoor fan 8.
The atmospheric heat defrosting running that should be undertaken by the running of outdoor fan 8 is set expansion valve 4 is adjusted to and is closed or near closing state, indoor fan 7 continues halted states, and cross valve 2 remains on the state of refrigerating circuit.At this moment, though preferably begin to carry out the running of outdoor fan 8, the revolution of outdoor fan 8 is increased to revolution or the maximum revolution higher than the revolution in the warming operation by outdoor fan running portion 53.But, also the revolution of outdoor fan 8 can be set at the revolution in the warming operation.
Then,, finish the defrosting running, be back to the action before defrosting, be returned to common heat pump heating running at time t5 at time t4.
In addition, if switch cross valve 2, make the heat-pump-type freeze cycle be refrigerating circuit time at the appointed time in, then also can the short time effectively by four-way valve defrosting, make attached to the part of the frost of outdoor heat converter 5 and melt.
In addition,, form the vent passages that outdoor air can pass through reliably when the Defrost operation, can carry out atmospheric heat defrosting running effectively by outdoor fan 8 even defrost fully.In addition, owing to detect the outdoor piping temperature by outdoor piping temperature sensor 9, so detect at outdoor piping temperature sensor 9 under the situation of the 3rd set point of temperature higher than first set point of temperature, if switch the defrosting run transition to atmospheric heat defrosting running from cross valve, just can exceed (to higher temperature) and carry out cross valve switching defrosting running, turn round and can transit to based on the running atmospheric heat defrosting of outdoor fan 8, improve the efficient of defrosting running in the short time.
In addition, in the above-described embodiment, though when second set point of temperature (for example 1 ℃) is above, carry out atmospheric heat defrosting running in outdoor temperature sensor 6 detected temperature, but be higher than the 4th set point of temperature of second set point of temperature (for example 5 ℃) when above by outdoor temperature sensor 6 detected temperature, also can be set at the situation that is lower than the 4th set point of temperature than outdoor temperature the duration of runs of outdoor fan 8 and lack.Because under the outdoor temperature condition with higher, the heat of atmospheric heat is more, so very fast attached to melting of the frost of outdoor heat converter 5.Its result can shorten the time that defrosting is turned round.
Utilizability on the industry
As mentioned above, the aircondition that the present invention relates to owing to can not change the modular construction of common aircondition, utilizes the atmospheric heat running that defrosts, so and be not only the aircondition of common family, also can be used in large-scale air-conditioning equipment.
Symbol description
1 compressor
2 cross valves
3 indoor heat converters
4 pressure reducers
5 outdoor heat converters
6 outdoor temperature sensor
7 indoor fans
8 outdoor fans
9 outdoor piping temperature sensors
10 indoor sets
11 off-premises stations
12 indoor controllers
13 outdoor controllers
50 defrosting beginning judging parts
51 compressor operation portions
The variable portion of 52 expansion valve openings
53 outdoor fan running portions
54 cross valve switching parts
60 defrosting commencing signal receiving portions
61 indoor fan running portions
Claims (9)
1. aircondition, it comprises: connect the heat-pump-type freeze cycle that compressor, cross valve, indoor heat converter, pressure reducer, outdoor heat converter constitute successively by refrigerant loop; Carry out the indoor fan of the heat exchange of indoor heat converter and room air; Carry out the outdoor fan of the heat exchange of described outdoor heat converter and outdoor air; With the outdoor temperature sensor that outdoor temperature is detected, this aircondition is characterised in that:
When carrying out the defrosting of outdoor heat converter, passing through the detected outdoor temperature of outdoor temperature sensor under the situation more than the setting, stop described compressor, make described outdoor fan rotation, defrost,
Use expansion valve as described pressure reducer, before the running that is about to defrost or after the running that just defrosted, described expansion valve is adjusted to closes or near closing.
2. aircondition, it comprises: connect the heat-pump-type freeze cycle that compressor, cross valve, indoor heat converter, pressure reducer, outdoor heat converter constitute successively by refrigerant loop; Carry out the indoor fan of the heat exchange of indoor heat converter and room air; Carry out the outdoor fan of the heat exchange of described outdoor heat converter and outdoor air; With the outdoor temperature sensor that outdoor temperature is detected, this aircondition is characterised in that:
When carrying out the defrosting of outdoor heat converter, passing through the detected outdoor temperature of outdoor temperature sensor under the situation more than the setting, stop described compressor, make described outdoor fan rotation, defrost,
Use expansion valve as described pressure reducer, before the running that defrosts, reduce the operating frequency of described compressor, described expansion valve be adjusted to and close or approaching closing thereafter, then, described compressor operation official hour is stopped afterwards, and then make described outdoor fan rotation.
3. aircondition, it comprises: connect the heat-pump-type freeze cycle that compressor, cross valve, indoor heat converter, pressure reducer, outdoor heat converter constitute successively by refrigerant loop; Carry out the indoor fan of the heat exchange of indoor heat converter and room air; Carry out the outdoor fan of the heat exchange of described outdoor heat converter and outdoor air; With the outdoor temperature sensor that outdoor temperature is detected, this aircondition is characterised in that:
When carrying out the defrosting of outdoor heat converter, passing through the detected outdoor temperature of outdoor temperature sensor under the situation more than the setting, stop described compressor, make described outdoor fan rotation, defrost,
Use expansion valve as described pressure reducer, before the running that defrosts, described expansion valve is adjusted to closes or near closing, in the stipulated time thereafter, described expansion valve is opened in control, and then make described outdoor fan rotation.
4. as each described aircondition in the claim 1～3, it is characterized in that:
In the defrosting running of described outdoor heat converter, the heat-pump-type freeze cycle keeps the heating state.
5. as each described aircondition in the claim 1～3, it is characterized in that:
High revolution or maximum revolution when being set at the revolution of the described outdoor fan in when running defrosting than warming operation.
6. as each described aircondition in the claim 1～3, it is characterized in that:
When by the detected outdoor temperature of described outdoor temperature sensor being setting when above, lacked the duration of runs that is set at duration of runs of described outdoor fan the described outdoor fan when being lower than described setting than described outdoor temperature.
7. aircondition, it comprises: connect the heat-pump-type freeze cycle that compressor, cross valve, indoor heat converter, expansion valve, outdoor heat converter constitute successively by refrigerant loop; Carry out the indoor fan of the heat exchange of described indoor heat converter and room air; Carry out the outdoor fan of the heat exchange of outdoor heat converter and outdoor air; With the outdoor temperature sensor that outdoor temperature is detected, this aircondition is characterised in that:
When carrying out the defrosting of outdoor heat converter, be lower than under the situation of setting by the detected outdoor temperature of described outdoor temperature sensor, described cross valve is switched, making described heat-pump-type freeze cycle is refrigerating circuit, stop the running of described compressor, and described expansion valve is adjusted to closes or near closing, make described outdoor fan rotation simultaneously thereafter, defrost
When by the detected outdoor temperature of described outdoor temperature sensor being setting when above, lacked the duration of runs that is set at duration of runs of described outdoor fan the described outdoor fan when being lower than described setting than described outdoor temperature.
8. aircondition as claimed in claim 7 is characterized in that:
To switch that to make the heat-pump-type freeze cycle be that the time set of refrigerating circuit is in the stipulated time to described cross valve.
9. aircondition as claimed in claim 7 is characterized in that:
Be provided with the outdoor piping temperature sensor that described outdoor piping temperature is detected, when being lower than set point of temperature by the detected outdoor piping temperature of this outdoor piping temperature sensor, described cross valve is switched, and making the heat-pump-type freeze cycle is refrigerating circuit.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008-236101 | 2008-09-16 | ||
| JP2008-236100 | 2008-09-16 | ||
| JP2008236100 | 2008-09-16 | ||
| JP2008236101 | 2008-09-16 | ||
| PCT/JP2009/004591 WO2010032430A1 (en) | 2008-09-16 | 2009-09-15 | Air conditioning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102159901A CN102159901A (en) | 2011-08-17 |
| CN102159901B true CN102159901B (en) | 2013-07-24 |
Family
ID=42039280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801363989A Expired - Fee Related CN102159901B (en) | 2008-09-16 | 2009-09-15 | Air conditioning device |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2330359A4 (en) |
| JP (1) | JP5363492B2 (en) |
| CN (1) | CN102159901B (en) |
| WO (1) | WO2010032430A1 (en) |
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| JP5053430B2 (en) * | 2010-10-05 | 2012-10-17 | シャープ株式会社 | Air conditioner |
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| CN102677439B (en) * | 2012-04-27 | 2016-12-14 | 青岛海尔滚筒洗衣机有限公司 | A kind of control method removing heat pump clothes dryer evaporimeter frosting and heat pump clothes dryer |
| JP5851935B2 (en) * | 2012-05-22 | 2016-02-03 | 株式会社コロナ | Refrigeration cycle equipment |
| CN103925673A (en) * | 2013-01-11 | 2014-07-16 | 邯郸美的制冷设备有限公司 | Defrosting control method of air-conditioner |
| CN104344619A (en) * | 2013-08-07 | 2015-02-11 | 洛阳中懋环保设备有限公司 | Double-system heat pump defrosting method and device |
| JP6225548B2 (en) | 2013-08-08 | 2017-11-08 | 株式会社富士通ゼネラル | Air conditioner |
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| CN103742987B (en) * | 2014-01-22 | 2016-06-08 | 苏州翔箭智能科技有限公司 | The Defrost method of new blower fan system |
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| JP6405181B2 (en) * | 2014-10-09 | 2018-10-17 | 東芝キヤリア株式会社 | Heat pump type heat source device |
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| CN104501353B (en) * | 2014-12-01 | 2017-06-06 | 广东美的制冷设备有限公司 | The control method and control device of dehumidifier and dehumidifier |
| EP3088811B1 (en) * | 2015-01-23 | 2018-04-04 | Mitsubishi Electric Corporation | Air conditioner |
| CN105953365B (en) * | 2016-05-16 | 2019-03-29 | 广东美的制冷设备有限公司 | Air conditioner and its defrosting control method |
| WO2018037465A1 (en) * | 2016-08-22 | 2018-03-01 | 三菱電機株式会社 | Heat pump apparatus, air conditioner, and water heater |
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| WO2019224944A1 (en) * | 2018-05-23 | 2019-11-28 | 三菱電機株式会社 | Air conditioner |
| CN108800441B (en) * | 2018-06-25 | 2019-08-27 | 宁波奥克斯电气股份有限公司 | Multi-connected machine defrosting control method and air conditioning multi-couple machine system |
| JP7096117B2 (en) * | 2018-09-26 | 2022-07-05 | 東芝キヤリア株式会社 | Air conditioner |
| CN110006134B (en) * | 2018-12-29 | 2020-06-26 | 西安交通大学 | Air conditioning system and control method and device thereof |
| WO2020202246A1 (en) * | 2019-03-29 | 2020-10-08 | 日立ジョンソンコントロールズ空調株式会社 | Air-conditioner |
| CN110243058A (en) * | 2019-06-14 | 2019-09-17 | 湖南省宝满科技开发有限公司 | A kind of the defrosting processing method and system of central air-conditioning outdoor unit |
| CN110293817B (en) * | 2019-06-24 | 2021-05-11 | 珠海格力电器股份有限公司 | Electric vehicle heat pump air conditioning system and defrosting method thereof |
| CN112577155B (en) * | 2019-09-27 | 2022-12-16 | 广东美的制冷设备有限公司 | Control method of air conditioner, air conditioner and computer readable storage medium |
| CN111156661B (en) * | 2020-01-03 | 2020-12-04 | 珠海格力电器股份有限公司 | Air conditioner heating operation control method, computer readable storage medium and air conditioner |
| WO2021186490A1 (en) * | 2020-03-16 | 2021-09-23 | 日立ジョンソンコントロールズ空調株式会社 | Air conditioner |
| JP7239844B2 (en) * | 2020-12-11 | 2023-03-15 | 三菱重工冷熱株式会社 | spot air conditioner |
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| CN115342483A (en) * | 2022-08-23 | 2022-11-15 | 南京天加环境科技有限公司 | Four-way valve non-reversing defrosting control method for air conditioner and air conditioning system |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2010032430A1 (en) | 2012-02-02 |
| CN102159901A (en) | 2011-08-17 |
| EP2330359A1 (en) | 2011-06-08 |
| WO2010032430A1 (en) | 2010-03-25 |
| JP5363492B2 (en) | 2013-12-11 |
| EP2330359A4 (en) | 2012-10-03 |
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