CN201059689Y - Heat-flash type air-conditioner - Google Patents

Heat-flash type air-conditioner Download PDF

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Publication number
CN201059689Y
CN201059689Y CNU2007200394121U CN200720039412U CN201059689Y CN 201059689 Y CN201059689 Y CN 201059689Y CN U2007200394121 U CNU2007200394121 U CN U2007200394121U CN 200720039412 U CN200720039412 U CN 200720039412U CN 201059689 Y CN201059689 Y CN 201059689Y
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CN
China
Prior art keywords
indoor
heat
defrosting
heating
flow fan
Prior art date
Application number
CNU2007200394121U
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Chinese (zh)
Inventor
牛斌
陶向红
祝君贵
方立勇
张开军
Original Assignee
中国扬子集团滁州扬子空调器有限公司
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Priority to CNU2007200394121U priority Critical patent/CN201059689Y/en
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Publication of CN201059689Y publication Critical patent/CN201059689Y/en

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Abstract

The utility model discloses a strong thermal type air conditioner; wherein, in a refrigerant circulating system, an outdoor unit consists of an outdoor unit heat exchanger, an outdoor axial fan, a compressor and a matched system component; and an indoor unit consists of an indoor unit heat exchanger and an indoor cross flow fan. The utility model is characterized in that the high power auxiliary electric heating devices are arranged in the indoor unit, the electric heating power of the high power auxiliary electric heating devices is 0.9 to 1.4 times of the system rated refrigerating capacity; and the high power auxiliary electric heating devices are in a group or multiple groups which can be controlled independently. When the defrosting is performed, the running at a low speed gear of the indoor cross flow fan is maintained; a high power auxiliary electric heater is turned on, and the circulating system is under the refrigeration working condition. The system heating capacity can be reached to more than two times of the refrigerating capacity. The utility model meets the requirement of the system setting with the small refrigerating capacity and the large heating capacity, and is in particular suitable for the southwest region with lower air temperature and larger humidity.

Description

Strong heat air conditioner
Technical field
The utility model relates to domestic air conditioner.
Background technology
The actual use of domestic air conditioner has the problem of following two aspects:
1, in different regions, temperature, humidity difference are very big, and climatic characteristic also is not quite similar, and is very not high such as Area during Summer temperature such as southwest, and winter temperature is then lower, and humidity is bigger.Local 28m 2The room needs a 2HP air-conditioning when using summer, and just needs a little 5HP air-conditioning when using winter, promptly greater than 4HP, near 5HP.But conventional at present 2HP fixed frequency air conditioner device, its system's heat pump heating capacity only is about 1.1 times of refrigerating capacity.Obviously, use, just do not satisfy the use in winter if use the 2HP air-conditioning to satisfy local summer; Otherwise, use the 5HP air-conditioning to satisfy the use in winter, then use summer and cause bigger waste.
2, air-conditioner is in the process of heating, and its outside is easy to frosting, causes air-conditioning frequently to defrost, and its defrost process of air-conditioner of using enters the defrosting program as shown in Figure 1 afterwards by following works at present:
After satisfying the defrosting condition, enter the defrosting program, aerofoil fan machine and compressor, indoor axial-flow fan have blown time-delay closing behind the waste heat outside the close chamber, the four-way change-over valve time-delay closing, compressor is opened then, enters kind of refrigeration cycle, begins defrosting; Satisfy the defrosting exit criteria, after defrosting finishes, compression office, outdoor aerofoil fan is opened, and defrosting finishes, and open four-way change-over valve time-delay back, and subsequently, compressor is opened again, recovers the state that normally heats.
In this defrost process, indoor axial-flow fan is out of service, and the work that heats stops fully.Because defrosting effect directly has influence on heating effect, for this reason, prolonging the time of Defrost operation and the frequency of increasing Defrost operation all has certain necessity, but this inevitable insufficient heating effect that has influence on owing to the time of heating.The GB mandatory provision: " defrosting time must not surpass running time 20% ", but for the bigger area of humidity, can be because defrosting thoroughly cause vicious circle, heating effect is poor time by time.Obviously, exist implacable contradiction between the two, simultaneously, because the discontinuity that heats, the environmental temperature fluctuation scope is big, brings discomfort to the user.
The utility model content
The utility model is for avoiding above-mentioned existing in prior technology weak point, a kind of strong heat air conditioner is provided, for being suitable for the southwest climatic characteristic, satisfying the demand of little refrigerating capacity, great heating capacity simultaneously, and can alleviate contradiction between defrosting time and the heating effect.
The utility model adopts following technical scheme for the technical solution problem:
The utility model strong heat air conditioner, in its refrigerant-cycle systems, the off-premises station that constitutes by the system unit of off-premises station heat exchanger, outdoor aerofoil fan, compressor and supporting setting, the indoor set that constitutes by indoor set heat exchanger and indoor axial-flow fan.
Design feature of the present utility model is that high-power auxiliary electro-heat device is set in described indoor set, the electric thermal power of described high-power auxiliary electro-heat device is 0.9 to 1.4 times of the specified refrigerating capacity of system, and described high power device is one group or many groups of can independently control.
The Defrost method of the utility model strong heat air conditioner is that indoor axial-flow fan is set to high, medium and low third gear rotating speed, and during defrosting, high-power electrical auxiliary heater is opened in the operation of axial-flow fan low or first gear in the holding chamber, and the circulatory system is in cooling condition.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
1, the high-power auxiliary electro-heat device during the utility model system is provided with can make the heating capacity of system reach more than the twice of refrigerating capacity, the system that has satisfied little refrigerating capacity and great heating capacity well is provided with requirement, is particularly suited for the southwest that temperature is lower, humidity is bigger.
2, the utility model is in defrost process, and the continuous operation maintenance heat supply with auxiliary electrical heating and indoor axial-flow fan has reduced the fluctuation of the environment temperature in the defrost process greatly, makes the user can not feel tangible defrost process.Simultaneously, because the continuous operation of auxiliary electrical heating and indoor axial-flow fan, improved the condensation temperature of compressor air suction temperature and off-premises station heat exchanger, make defrosting time shorter, defrost cleaner, thorough.
3, many groups of being set to by high power device independently to control of the utility model, and each group is devoted oneself to work successively, can hit little impact on the one hand to electrical network, can more help reducing temperature fluctuation range on the other hand, improve comfortableness, simultaneously since temperature fluctuation range reduce also economize on electricity relatively.
Description of drawings
Fig. 1 is an air-conditioner defrosting workflow diagram of the prior art.
Fig. 2 is the utility model system block diagram.
Fig. 3 is an electrically heated control flow chart in the utility model air conditioner heat-production process.
Fig. 4 is the utility model defrosting workflow diagram.
Below by the specific embodiment, the utility model is described in further detail in conjunction with the accompanying drawings:
The specific embodiment:
Referring to Fig. 2, the version of the fixed frequency air conditioner device routinely of the circulatory system in the present embodiment is provided with, system unit by off-premises station heat exchanger, outdoor aerofoil fan, compressor and supporting setting constitutes off-premises station, constitutes indoor set by indoor set heat exchanger and indoor axial-flow fan.
Shown in Figure 2, in order to realize heat-flash, high-power auxiliary electro-heat device is set in indoor set in the present embodiment, the electric thermal power of high-power auxiliary electro-heat device is 0.9 to 1.4 times of the specified refrigerating capacity of system.Such as, for the fixed frequency air conditioner of a 2HP, the specified refrigerating capacity of system is 5000W, and system's heat pump heating capacity then is 5500W, and for this reason, the electric thermal power of the high-power auxiliary electro-heat device of required setting is 4500W-7000W.Therefore to reach total heating capacity be 10000W-12500W in system, is equivalent to 5HP, obviously, the heating capacity of this air-conditioner be refrigerating capacity 2-2.5 doubly.
As the auxiliary electro-heat device, the value lower limit of its electric thermal power (being aforesaid 0.9 times) can not be too low, otherwise can not reach the effect of high-power auxiliary heating significantly.
For fear of to the impact of electrical network and for obtaining better comfort, and improve power savings, can high-power auxiliary electro-heat device be set to devote oneself to work successively many groups, each group adopts PTC element or electric heating tube respectively.
Defrost method at the version in the present embodiment is that indoor axial-flow fan is set to high, medium and low third gear rotating speed, and during defrosting, high-power electrical auxiliary heater is opened in the operation of axial-flow fan low or first gear in the holding chamber, and the circulatory system is in cooling condition.
The third gear rotating speed of indoor axial-flow fan is respectively that mid ranger rotating ratio top gear rotating speed is low by 10%, low or first gear rotating ratio top gear rotating speed low 30%~40%.
In concrete the enforcement, need on the remote controller of air-conditioner and guidance panel, " electric heating " function key be set respectively, be used to control this machine and whether enable " auxiliary electrical heating " function.On operation panel and remote controller, increase " permanent heat " function key is set, " permanent heat " means " heat is for not stopping; do not have obvious defrost process ", " permanent heat " function key offers the user and selects in common Defrost mode and the utility model Defrost mode, press " permanent heat " function key, " permanent heat " state that enters is wanted, and promptly adopts the utility model Defrost method; Press " permanent heat " function key once more and be cancellation " permanent heat " function, carry out work by common Defrost mode.Power on first, open and heat state, be defaulted as " permanent heat " function and open.
Concrete control flow such as accompanying drawing 3, shown in Figure 4:
Referring to Fig. 3, under heating mode,
Judge earlier: whether the difference that whether (1) " electric heating function " is enabled, (2) indoor set heat exchanger coils temperature sensor or indoor environment temperature sensor are the indoor temperature Tr that detects of inner disc temperature T h and the indoor environment temperature sensor intact, that (3) indoor set heat exchanger coils temperature sensor detects satisfied opens electrically heated requirement.
Judge: whether (4) Th lower, satisfy and open whether electrically heated condition, (5) indoor axial-flow fan turn round, whether (6) Tr satisfies is opened electrically heated requirement again.
If above condition all satisfies, then there are (7) to open first group of electrical heating earlier, by the auxiliary electric heater unit that the PTC form constitutes devote oneself to work, (8) PTC electric heater unit devotes oneself to work after a period of time, rejudge again whether above-mentioned (1) (2) (3) (4) (5) condition satisfies, (9) judge whether Tr is low excessively, need open two groups of electrical heating, (10) satisfy as condition, then open second group of electrical heating, devote oneself to work by the auxiliary electric heater unit that electric heating tube constitutes.
(11) in the electrical heating course of work, if " electric heating function " is closed, or Th satisfies electrical heating and closes condition, or indoor axial-flow fan stall, or indoor set heat exchanger coils temperature sensor damages, or the indoor environment temperature sensor damages, or Th and Tr difference satisfy electrical heating and close condition, and then two groups of electrical heating (PTC and electric heating tube) all quit work.
(12) if do not satisfy (11) described condition, but indoor temperature Tr rises to satisfy and closes one group of electrically heated condition, then closes second group of electrical heating, and the auxiliary electric heater unit that is made of electric heating tube quits work.
(13) if length is closed two electrically heated conditions to satisfying in the indoor temperature Tr continuation, then close another group electrical heating, the auxiliary electric heater unit that is made of PTC also quits work.
Referring to Fig. 4, satisfy the defrosting condition after, enter the defrosting program, indoor axial-flow fan is kept low or first gear running, aerofoil fan and compressor outside the close chamber simultaneously, if originally heated in the process, electrical heating is in running order, then works on; If have only one group of electric heater (PTC) work, open another group electrical heating after a period of time of then delaying time, also devote oneself to work by another group electrical auxiliary heater that electric heating tube constitutes; If two groups of electrical heating are then opened first group of electrical heating earlier all less than work, devote oneself to work earlier by the auxiliary electric heater unit that PTC constitutes, after time-delay a period of time, open second group of electrical heating, also devote oneself to work by the auxiliary electric heater unit that electric heating tube constitutes, time-delay a period of time is closed four-way change-over valve, a period of time of delaying time is again opened compressor, and system changes cooling flow over to, begins defrosting, satisfy the defrosting exit criteria, after defrosting finishes, compression office, outdoor aerofoil fan is opened; Four-way change-over valve is opened after a period of time; A period of time compressor of delaying time is again opened, and after recovering normally to heat state, again according to the described flow process of Fig. 3, whether the decision auxiliary electric heater unit works.
In concrete the enforcement, because the indoor is provided with more powerful electrical auxiliary heater, therefore, indoor axial-flow fan should adopt top gear when heating, and is out of shape to avoid the too high plastic that causes of temperature, guarantees its security; Adopt mid ranger during refrigeration, guarantee its practicality; Indoor auxiliary electrical heating is opened during defrosting, and indoor axial-flow fan keeps operation.Defrost mode and auxiliary electrically heated control are as follows:
1, press " permanent heat " function key, " permanent heat " is bright on the display screen, enters " permanent heat " state.Press " permanent heat " function key once more, cancellation " permanent heat " function.Power on first, open and heat state, be defaulted as " permanent heat " function and open.
2, Defrost mode:
Enter defrosting and should satisfy following condition simultaneously:
For being provided with off-premises station heat exchanger coils temperature sensor and not damaging
The off-premises station heat exchanger coils temperature T o that a, off-premises station heat exchanger coils temperature sensor detect≤-5 ℃;
B, accumulative total heat time 〉=50 minute;
C, heat time 〉=20 minute continuously;
D, outdoor aerofoil fan move 5 minutes continuously;
E, inner disc temperature T h<41 ℃.
For off-premises station heat exchanger coils temperature sensor not being set or having damaged:
A, accumulative total heat 50 minutes time;
B, heat time 〉=20 minute continuously;
C, air-conditioning heating effect descend.
The method of judging the decline of air-conditioning heating effect is more, adopt following scheme in the present embodiment: after compressor accumulative total heats 50 minutes, begin to judge, CPU carries out the indoor set heat exchanger coils temperature value that collects the AD conversion earlier, read AD value at that time in 15 seconds, minimum resolution is 1, compares with previous AD value, if littler than last sub-value, then the accumulator in the CPU adds 1, as maintaining an equal level, then do not add, as bigger than last sub-value with the last time, then totally subtract 2, accumulator is minimum to keep 0, when the numerical value in the accumulator more than or equal to 8 the time, think that then this satisfies.
After satisfying above-mentioned condition, " permanent heat " state of judging again whether machine is in, if be in " permanent heat " state then enter following defrosting program 1, this is a Defrost method described in the utility model; If machine is not in " permanent heat " state, then enter defrosting program 2, the Defrost method that this adopts for common air-conditioning.
Defrosting program 1: indoor axial-flow fan is kept low or first gear running, aerofoil fan and compressor outside the close chamber simultaneously, if originally heated in the process, electrical heating is in running order, then works on; If have only one group of electrical heating (PTC) work, then open another group electrical heating after 15 seconds, devote oneself to work by the auxiliary electric heater unit that electric heating tube constitutes; If two groups of electrical heating are then opened first group of electrical heating earlier all less than work, devote oneself to work earlier by the auxiliary electric heater unit that PTC constitutes, after 15 seconds, open second group of electrical heating, also devote oneself to work by the auxiliary electric heater unit that constitutes by electric heating tube, compressor stops back 40 seconds pass four-way change-over valves, opened compressor after 10 seconds, system changes cooling flow over to, begins defrosting, satisfy the defrosting exit criteria, after defrosting finishes, compression office, outdoor aerofoil fan is opened; Four-way change-over valve was opened in 40 seconds; Open after 10 seconds compressors, after recovering normally to heat state, again according to the described flow process of Fig. 3, whether the decision auxiliary electric heater unit works.
Defrosting program 2: outdoor aerofoil fan, compressor, auxiliary electrical heating are closed, indoor axial-flow fan has blown time-delay closing behind the waste heat, four-way change-over valve is closed after 40 seconds, and compressor is opened (enter kind of refrigeration cycle, begin defrosting) after 10 seconds, satisfy the defrosting exit criteria, after defrosting finishes, compression office, outdoor aerofoil fan is opened (defrosting finishes), open behind 40 seconds four-way change-over valves, compressor is opened after 10 seconds---recover normal heating process.
The termination condition of two kinds of defrosting programs all is: To>10 ℃ and compressor are in refrigerating state 3 minutes or reach the longest defrosting time 10 minutes.
3, auxiliary electrical heating unlocking condition under the normal heating mode:
First group of auxiliary electrically heated unlatching should be satisfied following condition:
Heat under the state, " electric heating " key is pressed, and the auxiliary electrical heating function is opened; Ts-Tr>3 ℃; Tr<25 ℃; Th<50 ℃; Indoor axial-flow fan turned round 5 seconds; Tr, Th do not damage.
Second group of auxiliary electrically heated unlatching should be satisfied following condition:
Heat under the state, " electric heating " key is pressed; Ts-Tr>3 ℃; Tr<23 ℃; Th<50 ℃; Indoor axial-flow fan turned round 5 seconds; Tr, Th do not damage, and first group of electrical heating opened 15 seconds;
The condition that the auxiliary electrical heating is closed:
Second group of auxiliary electrical heating closed and should be satisfied one of following condition:
A.Th>58℃;
B.Tr≥25℃;
C.Tr>Ts-1;
D. indoor axial-flow fan is out of service;
E.Tr, Th have a damage at least;
F. heat under the state, " electric heating " key is pressed, and electric heating function is closed.
First group of electrical heating closed and should be satisfied one of following condition:
A.Th>58℃;
B.Tr≥27℃;
C.Tr>Ts-1;
D. indoor axial-flow fan is out of service;
E.Tr, Th have a damage at least;
F. heat under the state, " electric heating " key is pressed, and electric heating function is closed.
Relevant test comprises: environment temperature is reduced to about the temperature of the actual use of user, to the machine test that defrosts, simultaneously two groups of electrical auxiliary heaters are directly connected power supply, make it still in running order when machine defrosts.At first situation during the axial-flow fan high-speed cruising in the test cabinet finds that leaving air temp is lower, has only about 32 ℃, blows on the person cool; When secondly indoor axial-flow fan middling speed was moved, leaving air temp had only about 34 ℃, is not suitable for; During the indoor axial-flow fan low cruise of last test, leaving air temp is about 37 ℃, and blowing on the person is a kind of sensation of low-grade fever, can accept.Done simultaneously long running experiment again under this condition, verified its security, experimental result meets the requirements.Determine machine at last when defrosting, outer blower fan is shut down, and the auxilliary heating of indoor electric is opened, and indoor axial-flow fan continues the room is carried out heat supply with low cruise.The worry that the imperceptible frequent defrosting of user's one side is brought improves the speed that heats; Can also shorten defrosting time on the other hand, it is more thorough to defrost.
In concrete the enforcement, be the air-conditioner of KFRd-50LW/100 at model, promptly refrigerating capacity is 5000W, and heating capacity is 10500W, heat pump heating capacity 5500W wherein, and auxiliary electrical heating power 5000W, hot cold ratio has reached 2.1.

Claims (1)

1. strong heat air conditioner, in its refrigerant-cycle systems, system unit by off-premises station heat exchanger, outdoor aerofoil fan, compressor and supporting setting constitutes off-premises station, constitute indoor set by indoor set heat exchanger and indoor axial-flow fan, it is characterized in that in described indoor set, being provided with high-power auxiliary electro-heat device, the electric thermal power of described high-power auxiliary electro-heat device is 0.9 to 1.4 times of the specified refrigerating capacity of system, and described high-power auxiliary electro-heat device is one group or many groups of can independently control.
CNU2007200394121U 2007-06-06 2007-06-06 Heat-flash type air-conditioner CN201059689Y (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101067504B (en) * 2007-06-06 2012-03-21 中国扬子集团滁州扬子空调器有限公司 Defrosting method of strong heat air conditioner
CN102538132A (en) * 2010-12-30 2012-07-04 珠海格力电器股份有限公司 Air conditioner intelligent control method with auxiliary electric heating function
CN103822327A (en) * 2013-10-29 2014-05-28 广东科龙空调器有限公司 Frequency-conversion air-conditioner electrical heating control method
CN105387573A (en) * 2015-12-10 2016-03-09 广东志高空调有限公司 Method for improving heating capacity of heat pump type air conditioner and heat pump type air conditioner
CN106152381A (en) * 2015-03-31 2016-11-23 Tcl空调器(中山)有限公司 Air-conditioner and the defrosting control method of air-conditioner
CN106569524A (en) * 2016-11-01 2017-04-19 中车株洲电力机车研究所有限公司 Cold plate evaporator refrigerant cooling system and control method thereof
WO2019047807A1 (en) * 2017-09-06 2019-03-14 青岛海尔空调器有限总公司 Upright indoor unit of air conditioner
CN110006133A (en) * 2019-04-16 2019-07-12 宁波奥克斯电气股份有限公司 A kind of air-conditioner defrosting control method, device and air conditioner
CN110848803A (en) * 2019-11-26 2020-02-28 中国扬子集团滁州扬子空调器有限公司 Single-cooling type air conditioner and indoor heater composite product and control method thereof

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101067504B (en) * 2007-06-06 2012-03-21 中国扬子集团滁州扬子空调器有限公司 Defrosting method of strong heat air conditioner
CN102538132A (en) * 2010-12-30 2012-07-04 珠海格力电器股份有限公司 Air conditioner intelligent control method with auxiliary electric heating function
CN102538132B (en) * 2010-12-30 2014-10-29 珠海格力电器股份有限公司 Air conditioner intelligent control method with auxiliary electric heating function
CN103822327A (en) * 2013-10-29 2014-05-28 广东科龙空调器有限公司 Frequency-conversion air-conditioner electrical heating control method
CN106152381A (en) * 2015-03-31 2016-11-23 Tcl空调器(中山)有限公司 Air-conditioner and the defrosting control method of air-conditioner
CN105387573A (en) * 2015-12-10 2016-03-09 广东志高空调有限公司 Method for improving heating capacity of heat pump type air conditioner and heat pump type air conditioner
CN106569524A (en) * 2016-11-01 2017-04-19 中车株洲电力机车研究所有限公司 Cold plate evaporator refrigerant cooling system and control method thereof
WO2019047807A1 (en) * 2017-09-06 2019-03-14 青岛海尔空调器有限总公司 Upright indoor unit of air conditioner
CN110006133A (en) * 2019-04-16 2019-07-12 宁波奥克斯电气股份有限公司 A kind of air-conditioner defrosting control method, device and air conditioner
CN110848803A (en) * 2019-11-26 2020-02-28 中国扬子集团滁州扬子空调器有限公司 Single-cooling type air conditioner and indoor heater composite product and control method thereof

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Granted publication date: 20080514

Termination date: 20120606